Search

Following the death of Mao in 1976, agrarian decision-making shifted from the collective to individual households, unleashing rapid growth in farm output and unprecedented reductions in poverty. In new data on reform timing in 914 counties, we find an immediate trend break in the fraction of male children following rural land reform. Among second births that followed a firstborn girl, sex ratios increased from 1.1 to 1.3 boys per girl in the four years following reform. Larger increases are found among families with more education and in counties with larger output gains due to reform. Proximately, increased sex selection was achieved in part through prenatal ultrasounds obtained in provincial capitals. The land reform estimate is robust to controlling for the county-level rollout of the One Child Policy. Overall, we estimate land reform accounted for roughly half of the increase in sex ratios in rural China from 1978-86, or about 1 million missing girls.

Este artigo aborda o desenvolvimento da agroenergia no Brasil. O foco central é o papel das políticas públicas na promoção da sustentabilidade no meio rural nas regiões Nordeste (bioma Caatinga) e Centro-Oeste (bioma Cerrado). O objetivo é destacar interações entre os fatores determinantes do desenvolvimento das políticas e a sua relação com as diretrizes e metas do Programa Nacional de Produção e uso de Biodiesel e do Plano Nacional de Agroenergia. As fragilidades destacadas se referem à baixa inserção socioeconômica na etapa agrícola, frente à dinâmica do mercado e às contradições entre oportunidades e desafios da agroenergia, no contexto da relação campo-cidade e agricultura-indústria. This article discusses the agroenergy development in Brazil. The central focus is the public policies role in promoting sustainability in the rural areas in the Northeast (Caatinga biome) and Midwest (Cerrado biome). The aim is to highlight interactions between the policy development drivers and its relationship with the directives and goals of the Brazilian Biodiesel Program and the National Agroenergy Planning. The weaknesses found in the policies relate to low socioeconomic integration in the agricultural stage, in a dynamic market and the contradictions between the opportunities and challenges of agroenergy in the context of rural-urban and agriculture-industry relationship.

Organic farming is often presented as the success story of Rural Development policies in the European Union, having grown from a marginal activity to one covering more than 5% of European agricultural land. Even though organic farming is often thought of as small-scale farming, I show that organic farms in Europe display characteristics associated with capitalist agriculture. Organic farms are larger and more mechanized than conventional farms. Furthermore, organic farms are associated with wage-labor and use less labor per hectare than their conventional counterparts, casting doubt on the efficacy of organic farming in increasing labor demand in marginalized communities and acting as an effective tool for keeping rural residents in the countryside. These results present us with evidence of the “conventionalization†of organic farming, and with a significant case of “green-washing†of capitalist structures of production.

Norway is considering a national afforestation program for greenhouse gas (GHG) sequestration on recently abandoned semi-natural pastureland. However, the program may have negative impacts on landscape aesthetics and biodiversity. We conducted a national choice experiment survey to estimate non-market benefits of the afforestation program, compared to an alternative program of recovering pastures and the status quo of natural reforestation. Combining the preference data with secondary data on costs, we derive the social net return on land use alternatives. We find that restoring half of the abandoned pastures for grazing yields the highest net present value. Rural households closer to abandoned pastures are the largest beneficiaries of this policy due to the value they place on pastures and their disutility of natural reforestation. Their willingness to pay (WTP) for recovering pastures is more than three times that of urban households, while non-use values derived from carbon sequestration and biodiversity seem more constant across space. The net present value of all land use alternatives are still positive when limiting the aggregation of WTP to rural households, and when allowing for the presence of substantial hypothetical bias in benefit estimates and for cost increases. Results indicate that landscape and biodiversity values are substantial and should be considered when designing agricultural and climate policies. Norske myndigheter vurderer et nasjonalt skogplantningsprogram for klimagassopptak på seminaturlige beitearealer som ikke lenger er i bruk og er i tidlig gjengroingsfase. I tilegg til virkninger på klimagassopptak, vil programmet påvirke landskapsestetikk og biologisk mangfold. Vi har gjennomført en nasjonal spørreundersøkelse hvor vi benytter et valgeksperiment til å estimere ikkemarkedsverdier av ulik arealbruk. Vi sammenstiller resultat fra undersøkelsen med sekundærdata på kostnader og utleder samfunnsøkonomiske nytten av de ulike arealbrukalternativene. Vi finner at gjeninnføring av beitedyr på halvparten av de gjengroende beitearealene gir høyest nettonåverdi. Befolkningen i utkantstrøk har størst glede av alternativet da gruppen har glede av beitelandskap og ikke ønsker at arealene gror til med skog. Rurale husholdningers betalingsvillighet for å tilbakeføre arealer i tidlig gjengroing til beitearealer er over tre ganger høyere enn urbane husholdningers betalingsvillighet. Det er liten eller ingen forskjell mellom by og land når det gjelder ikkebruksverdiene knyttet til karbonbinding og naturmangfold. Resultatene holder seg når vi begrenser nyttesiden til kun husholdninger i utkantstrøk, tillater hypotetisk skjevhet i betalingsvillighetsundersøkelsen og øker kostnadsestimatene. Våre funn indikerer verdier knyttet til landskap og biologisk mangfold er betydelige og bør vektlegges i utforming av landbruks- og klimapolitikk. Norwegian Research Council

Malnutrition is recognized as a major issue among low-income households in developing countries with long-term implications for economic development. Recently, crop diversification has been recognized as a strategy to improve nutrition and health, and as a risk coping strategy used by farmers in the face of climate change. However, there is no systematic empirical evidence on the role played by crop diversification in improving human health. We use the Tanzania National Panel Survey to investigate whether crop diversification could be considered as a promising agricultural strategy to improve child health in Tanzania. We use fixed effects panel estimation to control for unobserved heterogeneity, and perform several robustness checks including placebo tests to test the validity of our findings. We find a positive and significant effect of crop diversification on long-term child nutritional status, in particular for very young children and children living in households with limited market access.

This paper identifies several positive synergies between social protection programmes and food security outcomes. One function of social protection is to manage and reduce vulnerability, and several instruments are reviewed – weather-indexed insurance, public works programmes, emergency food aid and buffer stock management – which all contribute to stabilising income and access to food across good and bad years, or between the harvest and the hungry season. Other social protection instruments aim to contribute to raising household income and crop production, for instance agricultural input subsidies or input trade fairs, as well as public works projects that construct or maintain physical infrastructure such as rural feeder roads and irrigation canals. This paper also argues that food security can be strengthened if social justice is introduced to the design and delivery of social protection programmes. Examples reviewed include rights-based approaches such as employment guarantee schemes, community-based targeting and social audits. The paper concludes by arguing for a comprehensive approach to social protection that will achieve sustainable food security, by combining interventions that stabilise income or food production with those that raise income or food production, and are designed and delivered in ways that enhance social justice.

In many developing countries property rights over rural land are maintained through continuous personal use instead of by land titles. We show that removing the link between land use and land rights through the issuance of ownership certificates can result in large-scale adjustments to labor and land allocations. Using the rollout of the Mexican land certification program from 1993 to 2006, we find that households obtaining certificates were subsequently 28 percent more likely to have a migrant member. We also show that even though land certification induced migration, it had little effect on cultivated area due to consolidation of farm units. (JEL O13, O17, P14, Q15, Q18, Q24, Q28)

Data on fresh fruit and vegetable shrink in supermarkets is important to help understand where and how much shrink could potentially be reduced by supermarkets to increase their profitability. This study provides: (1) shrink estimates for 24 fresh fruits and 31 fresh vegetables in U.S. supermarkets in 2011 and 2012, and (2) retail-level food loss. For each covered commodity, supplier shipment data was aggregated from a sample of 2900 stores from one national and four regional supermarket retailers in the United States, and this sum was then compared with aggregated point-of-sale data from the same stores to estimate the amount of shrink by weight and shrink rates. The 2011–2012 average annual shrink rates for individual fresh vegetables varied from 2.2 percent for sweet corn to 62.9 percent for turnip greens and for individual fresh fruit ranged from 4.1 percent for bananas to 43.1 percent for papayas. When these shrink estimates were used in the Loss-Adjusted Food Availability data series, annual food loss for these commodities totaled 5.9 billion pounds of fresh fruit and 6.1 billion pounds of fresh vegetables. This study extends the literature by providing important information on where and how much shrink could potentially be reduced. Precise comparisons across studies are difficult. This information, combined with information on available and cost-effective technologies and practices, may help supermarkets target food loss reduction efforts though food loss will never be zero.

It is known that plant height is a suitable parameter for estimating crop biomass. The aim of this study was to confirm the validity of spatial plant height data, which is derived from terrestrial laser scanning (TLS), as a non-destructive estimator for biomass of paddy rice on the field scale. Beyond that, the spatial and temporal transferability of established biomass regression models were investigated to prove the robustness of the method and evaluate the suitability of linear and exponential functions. In each growing season of two years, three campaigns were carried out on a field experiment and on a farmer’s conventionally managed field. Crop surface models (CSMs) were generated from the TLS-derived point clouds for calculating plant height with a very high spatial resolution of 1 cm. High coefficients of determination between CSM-derived and manually measured plant heights ( R 2 : 0.72 to 0.91) confirm the applicability of the approach. Yearly averaged differences between the measurements were ~7% and ~9%. Biomass regression models were established from the field experiment data sets, based on strong coefficients of determination between plant height and dry biomass ( R 2 : 0.66 to 0.86 and 0.65 to 0.84 for linear and exponential models, respectively). The spatial and temporal transferability of the models to the farmer’s conventionally managed fields is supported by strong coefficients of determination between estimated and measured values ( R 2 : 0.60 to 0.90 and 0.56 to 0.85 for linear and exponential models, respectively). Hence, the suitability of TLS-derived spatial plant height as a non-destructive estimator for biomass of paddy rice on the field scale was verified and the transferability demonstrated.

Indospicine is a non-proteinogenic amino acid which occurs in Indigofera species with widespread prevalence in grazing pastures across tropical Africa, Asia, Australia, and the Americas. It accumulates in the tissues of grazing livestock after ingestion of Indigofera . It is a competitive inhibitor of arginase and causes both liver degeneration and abortion. Indospicine hepatoxicity occurs universally across animal species but the degree varies considerably between species, with dogs being particularly sensitive. The magnitude of canine sensitivity is such that ingestion of naturally indospicine-contaminated horse and camel meat has caused secondary poisoning of dogs, raising significant industry concern. Indospicine impacts on the health and production of grazing animals per se has been less widely documented. Livestock grazing Indigofera have a chronic and cumulative exposure to this toxin, with such exposure experimentally shown to induce both hepatotoxicity and embryo-lethal effects in cattle and sheep. In extensive pasture systems, where animals are not closely monitored, the resultant toxicosis may well occur after prolonged exposure but either be undetected, or even if detected not be attributable to a particular cause. Indospicine should be considered as a possible cause of animal poor performance, particularly reduced weight gain or reproductive losses, in pastures where Indigofera are prevalent.

Although alfalfa is moderately tolerant of salinity, the effects of salinity on nutrient composition and forage parameters are poorly understood. In addition, there are no data on the effect of salinity on the antioxidant capacity of alfalfa. We evaluated four non-dormant, salinity-tolerant commercial cultivars, irrigated with saline water with electrical conductivities of 3.1, 7.2, 12.7, 18.4, 24.0, and 30.0 dS·m−1, designed to simulate drainage waters from the California Central Valley. Alfalfa shoots were evaluated for nutrient composition, forage parameters, and antioxidant capacity. Salinity significantly increased shoot N, P, Mg, and S, but decreased Ca and K. Alfalfa micronutrients were also affected by salinity, but to a lesser extent. Na and Cl increased significantly with increasing salinity. Salinity slightly improved forage parameters by significantly increasing crude protein, the net energy of lactation, and the relative feed value. All cultivars maintained their antioxidant capacity regardless of salinity level. The results indicate that alfalfa can tolerate moderate to high salinity while maintaining nutrient composition, antioxidant capacity, and slightly improved forage parameters, thus meeting the standards required for dairy cattle feed EEA Santiago del Estero Fil: Ferreira, Jorge F.S. USDA. Agricultural Research Service. US Salinity Lab; Estados Unidos Fil: Cornacchione, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Xuan, Liu. USDA. Agricultural Research Service. US Salinity Lab; Estados Unidos Fil: Suarez, Donald L. USDA. Agricultural Research Service. US Salinity Lab; Estados Unidos

A pilot Postharvest Training and Services Center (PTSC) was launched in October 2012 in Arusha, Tanzania as part of a United States Agency for International Development (USAID) funded project. The five key components of the PTSC are (1) training of postharvest trainers, (2) postharvest training and demonstrations for local small-scale clientele, (3) adaptive research, (4) postharvest services, and (5) retail sales of postharvest tools and supplies. During the years of 2011–2012, a one year e-learning program was provided to 36 young horticultural professionals from seven Sub-Saharan African countries. These postharvest specialists went on to train more than 13,000 local farmers, extension workers, food processors, and marketers in their home countries in the year following completion of their course. Evaluators found that these specialists had trained an additional 9300 people by November 2014. When asked about adoption by their local trainees, 79% reported examples of their trainees using improved postharvest practices. From 2012–2013, the project supported 30 multi-day training programs, and the evaluation found that many of the improved practices being promoted were adopted by the trainees and led to increased earnings. Three PTSC components still require attention. Research activities initiated during the project are incomplete, and successful sales of postharvest goods and services will require commitment and improved partnering.

Botrytis cinerea is a fungus that causes gray mold on many fruit crops. Despite the availability of a large number of botryticides, the chemical control of gray mold has been hindered by the emergence of resistant strains. In this paper, tests were done to determine the botryticidal efficacy of selected plant extracts alone or combined with kresoxim-methyl. In total, eight South African medicinal plants viz Artemisia afra , Elyptropappus rhinocerotis , Galenia africana , Hypoxis hemerocallidea , Siphonochilus aetheopicus, Sutherlandia frutescens , Tulbaghia violacea and Tulbaghia alliacea were screened. Allium sativum , a plant species known to have antifungal activity, was included in the in vivo studies. For the in vitro studies, synergistic interactions between the plant extracts and the kresoxim-methyl fungicide were tested with radial growth assays. Data indicated synergistic inhibitory effects between the fungicide and the plant extracts. Next, different doses of plant extracts combined with kresoxim-methyl were used for decay inhibition studies on Granny Smith apples. Synergistic and additive effects were observed for many of the combinations. Even though this study was done using only one strain of B. cinerea , results showed that the tested indigenous South African plant species possess natural compounds that potentiate the activity of kresoxim-methyl.

This concept paper summarizes key “hotspots” for waste generation along the food supply chain and identifies a range of existing solutions/measures that can help producers, retailers and consumers reduce the amount of food that is wasted. The majority of food waste of 71–92 kg/head/year in Western Europe was found to originate from private households (61%), followed by restaurants and canteens (17%) and then supermarkets (5%); 59%–65% (of this food waste (71–92 kg) can be avoided and 54% thereof are fruit and vegetables. Since ethylene accelerates fruit ripening and its accumulation can lead to fruit decay and waste and new portable instruments now enable continuous in-situ determination of ethylene along the food chain, there is a possible key to reducing food waste of perishable, fresh produce. Hence, suggested countermeasures at the field level are use of ethylene inhibitors (AVG as “Retain” or MCP as “Harvista”), the former prevents pre-mature fruit drop in pome fruit, incentives for processing fruit of industrial grade and whole crop purchase (“WCP”). Along the supply chain, applications of ethylene inhibitors (e.g., 1-MCP as “SmartFresh”) absorber strips (e.g., “It’s Fresh”, Sensitech), bags (e.g., “Peakfresh”) as well as simply cooling and venting, and shading to avoid sun exposure. Countermeasures also include superstores no longer promoting multi-packs, e.g., “two strawberry punnets for the price of one”, abandon the “Display until” or “Sell by” date, conservative consumer shopping behavior, and sale of class II produce (“Wunderlinge” in Billa or “Kleine Äpfel” in REWE, “Ünique” in Coop), collection (rather than wasting) of perishable food by volunteers (“Die Tafel”), or “Food Sharing” of private household left-over perishable on social media, or any combination of the above to aid reducing fresh produce waste.

A model which describes tiller density dynamics in bahiagrass ( Paspalum notatum Flügge) swards has been developed. The model incorporates interrelationships between various morphogenetic and structural components of the sward and uses the inverse of the self-thinning rule as the standard relationship between tiller density and tiller weight (a density-size equilibrium) toward which tiller density progressively changes over time under varying nitrogen (N) rates, air temperature and season. Water and nutrient limitations were not considered except partial consideration of N. The model was calibrated against data from swards subjected to different N rates and cutting intensities, and further validated against data from a grazed sward and swards under different cutting intensities. As the calibration and validation results were satisfactory, the model was used as a tool to investigate the responses of tiller density to various combinations of defoliation frequencies and intensities. Simulations identified defoliation regimes required for stabilizing tiller density at an arbitrary target level, i.e. , sustainable use of the sward. For example, the model predicted that tiller density can be maintained at a medium level of about 4000 m −2 under conditions ranging from weekly cuttings to an 8 cm height to 8-weekly cuttings to 4 cm. More intense defoliation is needed for higher target tiller density and vice versa .

The objective of this work was to evaluate some of the important physical and mechanical properties of particleboard panels manufactured from three different cultivars of date palm ( Phoenix dactylifera ) fronds, namely Saqui, Barhi and Sukkari. Experimental panels were manufactured from hot water extracted and non-extracted, and fine and coarse particles of the raw material under two target panel densities of 650 and 750 kg/m 3 . Bending properties and internal bond strength, along with dimensional stability in the form of thickness swelling, water absorption, and linear expansion of the samples was tested. Based on the findings of this work, panels manufactured from high density level and Saqie cultivar, as well as fine particles, had better performance for their mechanical properties. The effect of hot water-treatment had less robust mechanical and physical properties. It appears that date palm fronds are underutilized resources that have the potential to be used in the manufacture of value-added panel products.

Half of Bosnia and Herzegovina’s (BH) population lives in rural areas. Agricultural production is a backbone of the rural economy and generates significant economic value for the country. BH is highly vulnerable to climate change, which poses a significant development challenge given the climate-sensitivity of the agricultural sector, the share of agriculture in the total economy, the number of people employed in the sector, and the closely related socio-economic issues of food security. BH has experienced serious incidences of extreme weather events over the past two decades, causing severe economic losses. Based on available data and currently available climate projections, exposure to threats from climate change will continue to increase. The review paper presents the current state of the BH agricultural sector and the impact of potential climate change on agricultural systems. It proposes policy options to optimize opportunities and mitigate consequences of possible climate change in the agricultural sector. Development of policy and research capacity should include harmonisation and centralisation of domestic agricultural policies, carrying out a vulnerability assessment and strengthening the public and private extension systems. Further technological development should include improvements in weather and climate information systems, crop development, irrigation and water management.

Agriculture may support the local nonagricultural economy in rural areas, though agricultural expansion may also crowd-out nonagricultural activity. On the United States Plains, areas over the Ogallala aquifer experienced windfall agricultural gains when post-WWII technologies increased farmers' access to groundwater. Comparing counties over the Ogallala with similar counties, nonagricultural sectors experienced only short-run relative benefits. Despite substantial and persistent agricultural gains, there was no long-run relative expansion of nonagricultural sectors in Ogallala counties. Agricultural development may still encourage regional or national nonagricultural development, but agriculture does not appear to generate local economic spillovers that differentially encourage local nonagricultural activity. (JEL Q12, Q15, Q18, Q25, R11)

Although Australia exports more than half of its agricultural production, there are food security problems as the current food supply systems in Australia fail to deliver healthy diets to all Australians and fail to protect the natural resources on which they depend. In addition, the food systems create “collateral damage” to the natural environment including biodiversity loss. In coming decades, Australia’s food supply systems will be increasingly challenged by resource price inflation and falling yields due to climate change. Government and business are aiming to increase production and agricultural exports. This will increase pressure on agricultural resources and exacerbate “collateral” damage to the environment. The Australian public has an ongoing interest in issues associated with the food systems including the environment, education, health and sustainability. A health-giving diet is essential for a full life and over a life-time people need food security. Currently economy development and social planning is undertaken through the pragmatic application of a set of ideas, such as relying on markets and deregulation, collectively referred to as neoliberalism. This paper contends that the neoliberal approach is not solving the current and developing problems in food security and agriculture more generally and suggests that more emphasis should be given to alternatives approaches. Seven alternatives approaches are suggested that could be used to identify gaps and guide the creation of overarching goals in economic development and social planning to improve food security and secure the other material goods and social arrangements that all Australians require to live full lives. However, changing large systems such as those involved in food supply is difficult because vested interests in the existing arrangements make the current systems resilient to change. There are a range of leverage points that have differing abilities to change systems. The paper points out that goals and information flows are good leverage points and suggests establishing overarching goals for the systems relevant to food and restructuring the flow of information about these systems will help reform the food supply systems in Australia.

Excessive salt rate can adversely influence the physical, chemical, and biological properties of soils, mainly in arid and semi-arid world regions. Therefore, salt-affected soils must be reclaimed to maintain satisfactory fertility levels for increasing food production. Different approaches have been suggested to solve these issues. This short review focuses on selected studies that have identified organic materials (e.g., farmyard manures, different agro-industrial by-products, and composts) as effective tools to improve different soil properties (e.g., structural stability and permeability) in salt-affected soils. Organic fertilization is highly sustainable when compared to other options to date when taken into consideration as a solution to the highlighted issues. However, further experimental investigations are needed to validate this approach in a wider range of both saline and sodic soils, also combining waste recycling with other sustainable agronomic practices (crop rotations, cover crops use, etc. ).

Plants harbor a diverse microbiome existing as bacterial populations on the leaf surface (the phyllosphere) and within plant tissues (endophytes). The composition of this microbiome has been largely unexplored in fresh produce vegetables, where studies have tended to focus on pathogen detection and survival. However, the application of next-generation 16S rRNA gene sequencing approaches is beginning to reveal the diversity of this produce-associated bacterial community. In this article we review what is known about the composition of the microbiome of fresh produce vegetables, placing it in the context of general phyllosphere research. We also demonstrate how next-generation sequencing can be used to assess the bacterial assemblages present on fresh produce, using fresh herbs as an example. That data shows how the use of such culture-independent approaches can detect groups of taxa (anaerobes, psychrophiles) that may be missed by traditional culture-based techniques. Other issues discussed include questions as to whether to determine the microbiome during plant growth or at point of purchase or consumption, and the potential role of the natural bacterial community in mitigating pathogen survival.

Food production in 2050 will be sufficient, globally, but many of the poor will remain food insecure. The primary cause of food insecurity will continue to be poverty, rather than inadequate food production. Thus, policies and investments that increase the incomes of the poor will remain the best ways to extend food security to all. Investments that promote growth in sustainable agriculture and provide non-farm employment opportunities in rural areas of lower income countries will be most helpful. There will be sufficient water, globally, to achieve food production goals and sustain rural and urban livelihoods, if we allocate and manage the resource wisely. Yet, water shortages will constrain agricultural production and limit incomes and livelihood opportunities in many areas. Policies and investments are needed to extend and ensure access to water for household use and agricultural production. Challenges requiring the attention of policy makers and investors include increasing urbanization and increasing demands for land and water resources. Policy makers must ensure that farmers retain access to the water they need for producing food and sustaining livelihoods, and they must create greater opportunities for women in agriculture. They must also motivate investments in new technologies that will enhance crop and livestock production, particularly for smallholders, and encourage the private sector to invest in activities that create employment opportunities in rural areas.

Listeria monocytogenes contamination of cantaloupes has become a serious concern as contaminated cantaloupes led to a deadly outbreak in the United States in 2011. To reduce cross-contamination between cantaloupes and to reduce resident populations on contaminated melons, application of sanitizers in packing shed wash water is recommended. The sanitizing agent of 5% levulinic acid and 2% sodium dodecyl sulfate (SDS) applied as a single hurdle in either a simulated dump or dip treatment significantly reduced L. monocytogenes to lower levels at the stem scar compared to a simulated dump treatment employing 200 ppm chlorine, however pathogen reductions on the rind tissue were not significantly different. Double hurdle approaches employing two sequential packing plant treatments with different sanitizers revealed decreased reduction of L. monocytogenes at the stem scar. In contrast, application of sanitizers both in the field and at the packing plant led to greater L. monocytogenes population reductions than if sanitizers were only applied at the packing plant.

Biochar has altered plant yields and soil nutrient availability in tropical soils, but less research exists involving biochar additions to temperate cropping systems. Of the existing research, results vary based on soil texture, crop grown, and biochar properties. The objective of this study was to determine the effects of pine ( Pinus spp.) woodchip biochar at 0, 5, and 10 Mg·ha −1 rates combined with urea nitrogen (N) on soil chemical properties and corn ( Zea mays L.) yield under field conditions in the first growing season after biochar addition in a silt-loam alluvial soil. Biochar combined with fertilizer numerically increased corn yields, while biochar alone numerically decreased corn yields, compared to a non-amended control. Corn nitrogen uptake efficiency (NUE) was greater with 10 Mg·ha −1 biochar compared to no biochar. There were limited biochar effects on soil nutrients, but biochar decreased nitrate, total dissolved N, and Mehlich-3 extractable sulfur and manganese concentrations in the top 10 cm. Pine woodchip biochar combined with N fertilizer has the potential to improve corn production when grown in silt-loam soil in the mid-southern U.S. by improving NUE and increasing yield. Further research will be important to determine impacts as biochar ages in the soil.

Subsistence Bhutanese farmers spread across different agro-ecological zones maintain large species and varietal diversity of different crops in their farm. However, no studies have been undertaken yet to assess why farmers conserve and maintain large agro-biodiversity, the extent of agro-ecological richness, species richness, estimated loss of traditional varieties and threats to the loss of on-farm agro-biodiversity. Information on the number of varieties cultivated by the farmers for six important staple crops were collected from nine districts and twenty sub-districts spread across six different agro-ecological zones of the country to understand farmers reasons for maintaining on-farm crop diversity, estimate agro-ecological richness, species richness and the overall loss of traditional varieties, to know the famers’ level of awareness on climate change and the different threats to crop diversity. The results from this study indicated that an overwhelming 93% of the respondents manage and use agro-biodiversity for household food security and livelihood. The average agro-ecological richness ranged from 1.17 to 2.26 while the average species richness ranged from 0.50 to 2.66. The average agro-ecological richness indicates a large agro-ecological heterogeneity in terms of the different species of staple crops cultivated. The average species richness on the other hand shows that agro-ecological heterogeneity determines the type and extent of the cultivation of the six different staple cereals under consideration. The overall loss of traditional varieties in a time period of 20 years stands at 28.57%. On climate change, 94% of the farmers recognize that local climate is changing while 86% responded that they are aware of the potential impacts of climate change on their livelihoods. Climate change and associated factors was considered the most imminent threat to the management and loss of on-farm agro-biodiversity. The results from this study indicate that on-farm agro-biodiversity conservation, development and utilization programs have to be more specific to the different agro-ecological zones considering the agro-ecological heterogeneity. Attention has to be given to individual crops that have low average species richness and high percentage of loss of traditional varieties. The impact of climate change could offset the traditional seed system which primarily supports the persistence of on-farm agro-biodiversity in several ways.

Exogenous shocks to farmers’ consumption, production and labour market decisions are rarely considered accurately. For farm households, under labour market imperfections, such decisions are often interlinked. This calls for non-separable agricultural household models. According to this framework, second-order (or behavioural) effects include a direct (i.e., supply or demand reactions due to an exogenous shock) and an indirect (i.e., supply or demand adjustments to the endogenous variations in the shadow wage generated by the exogenous shock) component. Under large price changes or following structural interventions, such as those concerning land redistribution or mechanization practices, neglecting such second-order effects on consumption and production can bias the final impact on household welfare. The main objective of this study is thus to develop a robust and comprehensive tool to evaluate the effect on household welfare of different agricultural policies in Tanzania and food price changes. A two-stage estimation strategy is adopted: the shadow price of labour is first estimated and then used to estimate production and demand systems as well as labour market functions. These models are subsequently used to simulate the effect on household welfare of a hypothetical 40% increase in the price of cereals and other crops and a hypothetical 10% increase in the hectares of arable land and in the use of ox-ploughs. The results are finally compared with the case in which a separable model is adopted.

The aim of the article is to assess the status, opportunities and prospects for external and internal financing of manufacturers of food products in the context of economic realities. The dynamics, the state and the level of human consumption of food in recent years are described. It emphases negative trend in household spending on food, that becomes a challenge to food security. The article reveals the main problems of financial support of food producers in crisis, and given the options to overcome them. Based on the analysis of structural changes in the sources of financing the investments, the dynamics of capital investment and foreign direct investment in the food industry it is concluded the priority of equity capital as the main resource of investment. Defined assessment of the portion of its components in the consolidated balance sheet of the branch and shown financial results indicate a lack of own sources of financing to cover the losses caused by the crisis. It was emphasized that the main strategy of survival for food manufacturers becomes a strategy to reduce costs, which will require from the public authorities greater control over the quality of products.

This paper describes Nepal’s national livestock policies and considers how they can be improved to help meet the pressing national challenges of economic development, equity, poverty alleviation, gender mainstreaming, inclusion of marginalized and underprivileged communities, and climate vulnerability. Nepal is in the process of transforming its government from a unitary system to a federal democratic structure through the new constitution expected by 2015, offering the opportunity to bring a new set of priorities and stakeholders to policymaking. Nepal’s livestock subsector comes most directly within the purview of the National Agricultural Policy 2004, Agro-Business Policy, 2006 and Agricultural Sectoral Operating Policies of the Approach Paper to 13th Plan, 2012/13–2015/16 policy instruments. We systematically review these and other livestock-related national policies through analysis of their Strengths, Weaknesses, Opportunities and Threats (SWOT). We conclude with the need to formulate a separate, integrated national livestock policy so that Nepal can sustainably increase livestock productivity and achieve diversification, commercialization and competitiveness of the livestock subsector within the changing national and international contexts.

The issue of the price of the wheat at harvesting in connection to high speculation, which is often illegal is a serious problem, with multiple negative effects on national, local and individual level. A campaign against this activity involves a set of tools to act simultaneously. Identifying a psychological problem and differentiated features this study proposes an advertising campaign for capitalizing on the concept of wheat in the collective mentality.

The origin of agricultural products is gaining in appreciation while often hard to determine for various reasons. Geographical origin may be resolved using a combination of chemical and physical analytical technologies. In the present case of Lily of the Valley ( Convallaria majalis ) rhizomes, we investigated an exploratory set of material from The Netherlands, three other European (EU) countries and China. We show that the geographical origin is correlated to patterns of stable isotope ratios (isotope fingerprints) and volatile organic carbon (VOC) compounds (chemical fingerprints). These fingerprints allowed clear distinction using exploratory and supervised statistics. Isotope ratio mass spectrometry of 12 C/ 13 C, 14 N/ 15 N and 16 O/ 18 O isotopes separated materials from Europe and China successfully. The VOC patterns measured by Proton Transfer Reaction Mass Spectrometry (PTR-MS) allowed distinction of three groups: material from The Netherlands, the other EU countries and China. This knowledge is expected to help developing a systematic and efficient analytical tool for authenticating the origin of flower bulbs.

Purpose: Urbanisation has become a common development phenomenon in emerging countries, as urban population growth rate is high in those countries. Consequently, demand for urban utilities, especially fresh water, exceeds supply. To address the challenge of inadequate fresh water supply in homes, for household use, many property owners extract underground water in residential areas, by drilling wells. They drink, cook, bath and do their laundry from that source of water. Although that practice is common in cities in Ghana, many consumers do not know the quality, of the underground water they use in their residential areas. Methodology: The research was undertaken to examine the quality of underground water in relation to human health. A case study approach was adapted to analyze equality of underground water at Taifa, a suburb of Accra which is administratively located in Ga East Municipal Assembly in Greater Accra region. Findings: This research showed that some underground water used in many homes contain some contaminants which are hazardous to health. These pollutants include chloride, nitrate, total coli form and fecal coli form bacteria which exceeded World Health Organization (WHO) Safe Maximum Consumption Levels (SMCL). Consequently, consumers of the underground water in the study area are at risk in terms of health safety standards. For example, researches have established that nitrate as contaminants in underground water does affect the health of pregnant women and children (under six months) leading to “blue baby syndrome†while some babies are born with defects. This observation, among others, points to the fact that urban utilities, especially fresh water, development policy and management should receive serious attention in Developing Countries. Recommendations: This study open new directions for further research.

A great challenge to EU livestock production markets is the growing production price and the farmers' income variability. The public request for traceability and accountability determined the EU agri-food policy to implement new sustainable reform. In this paper the author identified a set of inputs and impacts of CAP sustainable reform on livestock system.International major competitors are assessed to benchmark the competitiviness of EU agri-food industry.

For Romania to be able to cope of the Europe structures exigences, it is necessary to adapt the food production to current quality standards, which meet the requirements of the buyer of organic products. Fertile and productive soils, chemical processing and technologies of which have not yet reached the levels of industrialized countries, the use of clean technologies, the possibility to define ecological perimeters, clean, to apply organic farming practices, increasing demand for organic products, organic farming that can become a source of employment in rural areas, are just some of the favorable conditions to obtain organic products in our country.

The latest reform of the Common Agricultural Policy (CAP) has recently been accepted, identifying important challenges for EU agriculture, but proposing only limited changes to the previous CAP. Now it is time for the implementation of the new measures. However, from a theoretical point of view, it seems that the CAP can hardly meet the challenges it faces due to the inconsistencies between the predefined challenges and the measures proposed to meet them. The aim of the paper is to systematically analyse the consistency between the challenges of European agriculture and the policy measures aimed at meeting them. It seems that not all measures are consistent with the challenges.

Bioelectrochemical systems (BES) are a newly emerged technology for energy-efficient water and wastewater treatment. Much effort as well as significant progress has been made in advancing this technology towards practical applications treating various types of waste. However, BES application for agriculture has not been well explored. Herein, studies of BES related to agriculture are reviewed and the potential applications of BES for promoting sustainable agriculture are discussed. BES may be applied to treat the waste/wastewater from agricultural production, minimizing contaminants, producing bioenergy, and recovering useful nutrients. BES can also be used to supply irrigation water via desalinating brackish water or producing reclaimed water from wastewater. The energy generated in BES can be used as a power source for wireless sensors monitoring the key parameters for agricultural activities. The importance of BES to sustainable agriculture should be recognized, and future development of this technology should identify proper application niches with technological advancement. Published version

Grazing management has been the focus of the research with forage plants in Brazil for many years. Only in the last two decades, however, significant changes and advances have occurred regarding the understanding of the key factors and processes that determine adequate use of tropical forage plants in pastures. The objective of this review is to provide an historical overview of the research with forage plants and grasslands in Brazil, highlighting advances, trends, and results, as well as to describe the current state of the art and identify future perspectives and challenges. The information is presented in a systematic manner, favoring an integrated view of the different trends and research philosophies. A critical appraisal is given of the need for revision and change of paradigms as a means of improving and consolidating the knowledge on animal production from pastures. Such analysis idealizes efficient, sound and sustainable grazing management practices necessary to realize the existing potential for animal production in the tropics.

The TseTse fly is unique to Africa and transmits a parasite harmful to humans and lethal to livestock. This paper tests the hypothesis that the TseTse reduced the ability of Africans to generate an agricultural surplus historically. Ethnic groups inhabiting TseTse-suitable areas were less likely to use domesticated animals and the plow, less likely to be politically centralized, and had a lower population density. These correlations are not found in the tropics outside of Africa, where the fly does not exist. The evidence suggests current economic performance is affected by the TseTse through the channel of pre colonial political centralization. (JEL I12, N57, O13, O17, Q12, Q16, Q18)

Economic damages associated with climate change in the United States have been studied in the burgeoning climate economics literature covering various sectors. For example, most of the predicted damages from climate change in the United States come from the increased frequency of extreme heat ( Houser et al. 2014) . Warming leads to fewer cold and more hot days. The reduction in cold days is generally beneficial, but the increase in very hot days more than offsets these benefits due to an asymmetric relationship where the magnitude of the sensitivity to extreme heat is much larger than to extreme cold. In the agricultural sector, the damaging effects of temperature increases above roughly 85o F are an order of magnitude larger than the beneficial effects below the threshold ( Schlenker and Roberts 2009) . Government programs may both enable or potentially distort societal adaptation behavior. Yet, empirical evidence about the effectiveness of governmental programs and whether they aid

Thermal-based germination models are widely used to predict germination rate and germination timing of plants. However, comparison of model parameters between large numbers of species is rare. In this study, seeds of 27 species including 12 C 4 and 15 C 3 species were germinated at a range of constant temperatures from 5 °C to 40 °C. We used a modified thermal time model to calculate germination parameters at suboptimal temperatures. Generally, the optimal germination temperature was higher for C 4 species than for C 3 species. The thermal time constant for the 50% germination percentile was significantly higher for C 3 than C 4 species. The thermal time constant of perennials was significantly higher than that of annuals. However, differences in base temperatures were not significant between C 3 and C 4 , or annuals and perennial species. The relationship between germination rate and seed mass depended on plant functional type and temperature, while the base temperature and thermal time constant of C 3 and C 4 species exhibited no significant relationship with seed mass. The results illustrate differences in germination characteristics between C 3 and C 4 species. Seed mass does not affect germination parameters, plant life cycle matters, however.

There are numerous species of larkspur (Delphinium spp.) in North America. Larkspurs are a major cause of cattle losses on western ranges in the USA, especially on foothill and mountain rangelands. The toxicity of larkspur species is due to various norditerpenoid alkaloids. In this article, we review the current knowledge regarding larkspur ecology and distribution, analytical technologies to study and quantify the toxins in larkspur, the toxicology of the larkspur plants and their individual toxins, known genetic variations in larkspur susceptibility, and current management recommendations to mitigate losses from larkspur poisoning.

The purpose of this study is to analyze the development of agriculture sector during the years 2002-2013. It includes theoretical reflections on the market and state failure, an analysis of public support for agricultural sector, level of investments and changes in its structure, the identification of reasons for changes taking place due to the European integration processes as well as the determination of strength and nature of the connections between the agricultural sector and its environment. Using the statistical and descriptive methods, was carried out an analysis of the CSO and FADN data, was evaluated the degree of development of agricultural and was formulated proposals for a long-term strategy of the agricultural sector.

Backcross hybrids between the important forage legume white clover (Trifolium repens L.), which is stoloniferous, and the related rhizomatous species Caucasian clover (T. ambiguum M. Bieb), have been produced using white clover as the recurrent parent. The effect of drought on the parental species and two generations of backcrosses were studied in a short-term glasshouse experiment under three intensities of drought. Plants of Caucasian clover maintained a higher leaf relative water content and leaf water potential than white clover at comparable levels of drought, with the response of the backcrosses generally intermediate between the parents. Severe drought significantly reduced stolon growth rate and leaf development rate of white clover compared to the control, well-watered treatment, whilst differences between these two treatments in the backcross hybrids were relatively small. The differences between parental species and the backcrosses in root morphology were studied in 1m long vertical pipes. The parental species differed in root weight distribution, with root weight of Caucasian clover significantly greater than white clover in the 0.1 m to 0.5 m root zone. The backcrosses exhibited root characteristics intermediate between the parents. The extent to which these differences influence the capacity to tolerate drought is discussed.

Purpose: Food security states the access to suitablequantity of food for meeting nutritional energy wants that suggests for numerous as independence as producing essential food nationally. Methodology: A nation is independent in food once it can achieve the equilibrium between supply and demand by producing nationally. Findings: No matter what the symmetry price would be that could be outside the spread of mainstream of the population in a developing budget. Recommendations: This study open new directions for further research.

The article is devoted to disclosure of problematic aspects of social and food supply security in process of implementation of innovative model in Ukraine. Substantiated as obstacle for economy innovative development is social inequality having critical importance. Essential barrier for reduction of social strain in society is high level of household expenses for food products with simultaneous drop in average monthly salary growth rate. It is stressed that improvement of life of people is possible only on condition of successful functioning and development of real economy which requires coordination of relevant priorities with needs of economy and society. Production of socially significant goods, primarily food, and their sales by industry giants depends on private interests of their owners. Their main priority is diversification of business to reduce risks, which is not in agreement with social problems and guarantee of food supply security of the state. To certain extent such conclusion concerns also big agrarian business. It is concluded that selection of implementation priorities of any development strategy should be based upon consideration of crisis problems as social ones.

This review is a comprehensive introduction to pertinent aspects of the extraction methodology, chemistry, analysis and pharmacology of essential oils, whilst providing a background of general organic chemistry concepts to readers from non-chemistry oriented backgrounds. Furthermore, it describes the historical aspects of essential oil research whilst exploring contentious issues of terminology. This follows with an examination of essential oil producing plants in the Australian context with particular attention to Aboriginal custom use, historical successes and contemporary commercial prospects. Due to the harsh dry environment of the Australian landmass, particularly to the cyclical climatic variation attendant upon repeated glaciation/post-glaciation cycles, the arid regions have evolved a rich assortment of unique endemic essential oil yielding plants. Though some of these aromatic plants (particularly myrtaceous species) have given birth to commercially valuable industries, much remains to be discovered. Given the market potential, it is likely that recent discoveries in our laboratory and elsewhere will lead to new product development. This review concludes with an emphasis on the use of chemotaxonomy in selection of commercially viable cultivar chemotypes from the Australian continent. Finally, drawing largely from our own results we propose a list of Australian endemic species with novel commercial potential.

We have examined challenges and economic prospects of establishing an organized Commodity Exchange in Ghana. We find that such a market will result in reduction in post-harvest losses through price stability, improvement in commodity price risk and credit risk management, provision of a transparent and competitive price discovery mechanism, reduction in transaction and marketing costs, and avoidance of making the mistakes of others. However, we also identify the challenges that should be resolved such as lack of laws and regulations specifically pertaining to the commodity exchange; inadequate financial support; lack of trading infrastructure; inadequate volume; liquidity problem; smallholder farms; lack of understanding of trading instruments; and government/political interference to this end. Overall policy implications suggest inadequate infrastructure and capacity building of market participants should be enhanced.

The article is devoted to defining the causes of failure of innovative business to maintain stable economic growth of own companies. There are studied historical trends and international experience of innovative development of big business. There are defined factors that impede effective sustainable business growth due to innovation. There are discovered and proved the signs which we should focus on when forming innovation policy of development of food complex companies in terms of the movable unstable system of economy of Ukraine. Special attention is paid to the peculiarities of multinational companies. It is shown that today the strategies of acquisitions of large foreign companies are not consistent with the goals of their growth. According to the author, winning all sectors of the food industry by foreign companies can be dangerous for the country's future. There is explained the necessity to create rapid innovation that in current conditions get new nature. There are formulated practical recommendations for the survival of small and medium business in terms of the movable unstable system of economy of Ukraine.

Aflatoxins, produced by the fungus Aspergillus flavus , occur naturally in maize. Contamination of maize grain with aflatoxin is a major food and feed safety problem and greatly reduces the value of the grain. Plant resistance is generally considered a highly desirable approach to reduction or elimination of aflatoxin in maize grain. In this investigation, a diallel cross was produced by crossing 10 inbred lines with varying degrees of resistance to aflatoxin accumulation in all possible combinations. Three lines that previously developed and released as sources of resistance to aflatoxin accumulation were included as parents. The 10 parental inbred lines and the 45 single crosses making up the diallel cross were evaluated for aflatoxin accumulation in field tests conducted in 2013 and 2014. Plants were inoculated with an A. flavus spore suspension seven days after silk emergence. Ears were harvested approximately 60 days later and concentration of aflatoxin in the grain determined. Parental inbred lines Mp717, Mp313E, and Mp719 exhibited low levels (3–12 ng/g) of aflatoxin accumulation. In the diallel analysis, both general and specific combining ability were significant sources of variation in the inheritance of resistance to aflatoxin accumulation. General combining ability effects for reduced aflatoxin accumulation were greatest for Mp494, Mp719, and Mp717. These lines should be especially useful in breeding for resistance to aflatoxin accumulation. Breeding strategies, such as reciprocal recurrent selection, would be appropriate.

The article deals with the development of consumer prices in the Czech Republic in the context of food prices in the European Union and the World market. This article aims to identify consumer prices development in the market in the Czech Republic in relation to the development of consumer prices in the world market and the EU market. The paper is also analyzing the development of consumer prices in relation to individual commodities and products sold in Czech retail companies. The position of the most significant retail chains in Czech market is highlighted and price differences among individual retail chains are identified. In relation to the results it can be said: Prices on the Czech market very strongly correlate especially in relation to the EU market, a little bit lower (but still significant) correlation is existing in relation to the World market. Czech consumer price sensitivity is very strong - very flexible to changes in the price level on the market of the EU (cc more than 1%) and vice versa inelastic (cc 0,3%) with respect to changes in the price level on the World market. CR follows the general development price trends which exist in the EU market. In relation to particular commodity segments in CR we can say that food prices increased fastest in case of fruit and vegetables, oils and fats, dairy products, fish and seafood, poultry, beef and cereals and bakery products. In the Czech Republic there is no uniform price level between regions. On the one hand Czech retail market is very concentrated - a relatively small number of players control the character of the market - but compared to the European average we can say that the market is highly competitive (the result of this development is the fact that already several retail companies left the Czech market during the last several years), because none of the subjects clearly dominates on the market. Individual retail chains in their pricing policies more or less follow the same general price trends and tendencies which are similar to the price development of the domestic market and especially the EU market.

Sheep and goat production systems in the United Arab Emirates (UAE) operate under scarce natural resource constraints. A cross-sectional survey that covered 661 mixed farms, including major sheep and goat production, was conducted in the three regions of Abu Dhabi Emirate (Al-Ain, Western Region and Abu Dhabi city) during 2012. A Cobb-Douglas, double-logarithmic stochastic frontier production function and maximum likelihood estimation were applied to estimate important economic derivatives and the associated risk of small ruminant production in this arid area. The highest impact of an input on the output level was found to be labor for raising sheep and alfalfa grass for raising goats. Both labor and alfalfa variables were found to be overutilized for sheep and goat production, respectively. Overall, the results indicate that average technical efficiency is 0.62 for raising sheep and only 0.34 for raising goats in the study area. Technical efficiency analysis included measuring the frequency of farms at each level of estimated technical efficiency in the range between zero and one. Zero for the technical efficiency coefficient indicates a lack of technical efficiency in resource use. The results of this study indicated that only 1% of the sheep farms show a technical efficiency coefficient of 0.25 or less, the same can be said for 41% of goat producers. However, these technical efficiencies were found to be more than 0.75 for 12% and 5% of the sheep and goat farms, respectively. Overall, goat farming in the UAE was found to be less efficient than sheep production. The results also indicated that flock size and type of breed were the most influential factors relative to other factors, and both show a positive relationship with technical efficiency. Other than flock size, factors, such as owners’ years of experience and management practices, were found to be more influential on goat farming system efficiency relative to sheep farming.