Search

Approximately 5% of the total emissions (0.11 Gt CO2 and GWP-AR5) originate in Rio Grande do Sul state (RS), a representative agricultural region in Southern Brazil. This study assessed SOCS (soil organic C stocks) in Latossolos of the Planalto of RS, with up-to-date data obtained from recent field campaigns and legacy data, and relate these SOC stocks to environmental variables. A literature search identified 195 documents with SOCS in layers 0-30 cm and 0-100 cm. The mean SOCS (0-30 cm) in the Latossolos was significantly higher (73.6 Mg ha-1) than the suggested IPCC default (55 Mg ha-1). The highest stocks (237 ± 39 Mg ha-1) were measured in uncultivated Latossolos Brunos in the 0-100 cm layer, especially at higher altitudes and lower mean annual temperature. The most frequently occurring soil Latossolo Vermelho distroférrico-LVdf (25% of the Planalto), also had high SOCS. Surprisingly Latossolos Vermelho Distrófico (LVd) also had high SOCS, in spite of the coarser texture. The estimated SOCS in Latosoolos of the Planalto is 419.9 Tg C, 36% larger than reported previous studies. We concluded that, despite significant land use changes, soils of this region maintain large SOCS which had been underestimated in previous studies. [ABSTRACT FROM AUTHOR]

The aim of this study was to assess the deposition rates (Td) of mineral aeolian sediments in a forest patch in the semiarid Pampas agroecosystem and to analyze the seasonal variability of such deposition. The average Td was 520.15 kg ha-1 year-1 with high interannual variability. In spring-summer, Td was higher than in autumn-winter. Air temperature and average maximum wind speed influenced Td more significantly. However, the soil cover and management of the agricultural fields surrounding the forest would determine the production of sediment from wind erosion and consequent deposition within the forest. These results show the importance of maintaining forest patches within the agricultural matrix in the semi-arid environment, since they retain eolian sediments that would eventually be deposited on the forest soil, minimizing the negative impacts of wind erosion processes on these ecosystems. [ABSTRACT FROM AUTHOR]

This research aimed to evaluate the changes in the soil chemical attributes and their effects on the agronomic attributes of corn, after conversion from conventional tillage (PC) to no-tillage (SD), in a Inceptisol soil (Cambissolo Húmico alumínico léptico). In an experiment where PC and SD effects had been studied for 20 yr, main plots under PC were converted to SD and referred to as implemented SD (SDi) while plots under SD remained unaltered and were referred to as consolidated NT (SDc). The pH in water, exchangeable aluminum, potassium, calcium, and magnesium, extractable phosphorus, and total organic carbon (COT), were determined at the beginning of the experiment and after a 30-month period. The agronomic attributes of corn grown under SDi and SDc were also evaluated. At the end of the experiment, plots under SDi evidenced an increase in exchangeable aluminum and potassium and COT, and a decrease in pH and exchangeable calcium. Corn biomass accumulation in shoots and roots increased and higher grain yields were observed under SDc compared to SDi. [ABSTRACT FROM AUTHOR]

The agricultural productions in the Pampas Region (PR) have led to the depletion of exchangeable bases and soil acidification due to the extraction of nutrients without replenishment and the excessive use of fertilizers. Such issue has been addressed in tropical areas but has not been thoroughly investigated in temperate regions despite its effects on leguminous crops. The use of amendments and calcium-based fertilizers has shown variable results in the PR, highlighting the complexity of the practice. The use of fertilizers might be a conjuctural solution to the use of amendments. The objective of this study was to evaluate calcium fertilizers and amendments on 1) forage soybean aerial biomass dry matter production (DM), calcium (Ca) concentration (CCaB) and magnesium (Mg) concentration (CMgB), and Ca export (ECaB) and Mg export (EMgB), 2) physicochemical and chemical soil properties, and 3) Ca balance (BCaS) in Mollisols from the province of Buenos Aires. A greenhouse trial was conducted with soybean from two sites (Bellocq and Inchausti). Four treatments were applied: 50 kg Ca ha-1 (F50) 100 kg Ca ha-1 (F100), 1500 kg CaCO3 ha-1 (C1500), and a control without products (T). The use of 100 kg ha-1 of Ca with fertilizer increased soybean DM associated with an increase in values of 4 meq l-1 of Ca in the soil soluble-available fraction (CaExt). CCaB and CMgB in soybean showed differences only between soils. BCaS depended solely on DM production. BCaS was negative only in the control treatment. These results are essential for understanding the dynamics of basic nutrients in PR soils, whose levels are decreasing due to negative balances, thus leading to soil acidification. Additionally, they could be used in site-specific soil management approaches, supported by the extensive precision agriculture technologies available. Furthermore, they showed that CaExt could be an indicator of calcium sufficiency. [ABSTRACT FROM AUTHOR]

Family and small-scale farming systems are increasingly important in achieving food sovereignty and sustainability. This makes necessary to characterize them and develop systems to evaluate their sustainability, which allow the monitoring of the management of various resources with a participatory approach. In this work, the application of the MESMIS methodological framework is presented for the design of a system of indicators related to the management of soil resources in the Organoponic Garden of the farm El Guayabal, which respond to the premises of simplicity, sensitivity and easy application. The methodological scheme used in the construction of the system of indicators and the results obtained in its evaluation are presented. [ABSTRACT FROM AUTHOR]

Copyright of Pedagogía Profesional is the property of Universidad de Ciencias Pedagogicas "Enrique Jose Varona" Facultad de Ciencias Tecnicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The implementation of new technologies in agro-industrial activities has contributed to the minimization of problems due to soil depletion; however, the management of soil quality for agricultural use has been a neuralgic point due to the processes of infertility due to erosion. The objective of this research is to model soils degraded by agroindustrial interaction using Sentinel images in the municipality of Valledupar, Cesar (Colombia). Different national and international remote sensing images were used to obtain components for the application of the universal soil loss equation RUSLE. The results show a low to very high degree of erosivity - R factor, mainly critical towards the Sierra Nevada de Santa Marta (SNSM) and soils of very low erodibility - K factor. The LS factor shows varied length and slopes. Forests, crops and grasslands identified by factor C predominate towards the forest conservation zones of the mountainous landscape, while in the alluvial valley there are crops and shrublands together with sparse and semi-arid vegetation. It was found that the largest percentage of the study area has slight losses while the moderate to very high zones are strongly dominated by high slopes. [ABSTRACT FROM AUTHOR]

It is well known that different soil use and management systems affect the abundance, activity and composition of the soil microbial community. In this work, the behavior of cultivable bacterial populations and, in particular, P (PSB) solubilizing bacteria in soil samples from a long-term trial with different culture sequences was studied. The results obtained show that the clearing and subsequent agricultural use after 11 years generated a decrease in the population of cultivable bacteria in general, and of P-solubilizing bacteria in particular, with respect to the pristine soil. Isolates with high P solubilization efficiency were obtained from the soils from the different rotations. These efficient isolates were taxonomically classified by 16S RNA analysis as belonging to the genera Bacillus, Paenibacillus, Pseudomonas and Xanthomonas. In particular, the characterization of the culture supernatants of the isolates Pseudomonas koreensis and Paenibacillus pabuli showed they are producers of organic acids. The combined inoculation tests of these two strains on maize plants in a culture chamber revealed a synergistic effect on the growth promotion of this species. The results presented here suggest that although PSB populations are more numerous in pristine soils, certain long-term crop rotations favor the increase of more efficient solubilizing bacteria, an aspect that should be considered when designing future search strategies for potential bioinoculants. [ABSTRACT FROM AUTHOR]

Soil is an essential natural resource for life, therefore it is necessary to carry out an efficient management of it that guarantees the production of food in a sustainable way without compromising its stability. The present work was carried out in the peasant farm "La Gabriela" belonging to the CCS "Leovigildo Sierra" of the Pedro Betancourt municipality in the Matanzas province, with the objective of recommending the use and sustainable management of the soil based on the agro-productive limitations detected by Through the different studies carried out, from which it was possible to obtain the type of soil and the different Agrological Classes that are present in the areas of the farm, identifying the main agro-productive limitations that put the conservation and conservation of this important natural resource at risk., recommending in each case its proper use and management. [ABSTRACT FROM AUTHOR]

Copyright of Avances is the property of Instituto de Informacion Cientifica y Tecnologica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction. It is of vital importance for agricultural associations to have models of sustainable agriculture that can be adopted by producers, generating social, economic and environmental benefits, improving not only the growth of the sector, but also the quality of life of society. Objective. To propose a methodology for the adoption of good practices in sustainable agriculture in an association in the municipality of Silvania, Cundinamarca. Materials and methods. Based on a descriptive scope from a qualitative approach, a population of 70 producers was approached, to whom a semi-structured interview was applied, analysing the information obtained with the Atlas.ti® software version 8. Results. The most important result of this study is the identification of a methodological route of four phases that includes practices with agroecological approaches, soil management, water management and the development of ICT, articulated in a sequential manner to be implemented over a period of 18 weeks. Conclusion. It is concluded that this methodological proposal for the adoption of good practices in sustainable agriculture is relevant for the association studied, due to the real context of the producers, which responds to the needs of the agricultural sector. [ABSTRACT FROM AUTHOR]

Agricultural intensification drives environmental transformations as impacts associated with the provision of regulating ecosystem services linked to the soil. It is relevant to design and implement sustainable soil management to protect this resource and guarantee food security and the services it provides. An environmental diagnosis of the situation is necessary. Consequently, soil loss and potential erosion were estimated, per hectare and per agricultural surface, associated with the trends of the agriculturization process in the heterogeneous Environmental Units (UA) of Tandil on three different dates (1989, 2004 and 2019). Based on background work and geographic information systems and soil charts, the predominant taxonomies in the study area were determined in order to apply the Universal Water Erosion Prediction Equation using the INTA-USLE/RUSLE Water Erosion software. The loss of soil associated with water erosion is not expressed uniformly in the landscapes of Tandil. Soil loss caused by total water erosion is not linear throughout the study period. The highest erosion rates correspond to UA2, a rolling plain, due to the extension occupied by agricultural activity, followed by UA4 with poor drainage conditions and, then, by unit UA7 whose vulnerabilities are generated by the slopes of the land. Three main reasons influence the increase in water erosion according to the results obtained: the ecological characteristics inherent in each landscape; management techniques and technologies implemented in agroecosystems; and the area dedicated to agricultural activity. [ABSTRACT FROM AUTHOR]

Hydric erosion in the Andean region of Colombia is characterized for its high intensity rains, and soils susceptible to wearing down due to steep slopes. Same way, poor practices in the use of land had increase environmental conflicts over viability of fertile areas as well as for ecosystems preservation. Considering projects of regional planning in Department of Cauca, it was necessary to know the magnitude of such erosion processes and its potential ground losses. It was then, programed the study of risks in seven municipalities from the Andean region in Cauca: Almaguer, Bolívar; Cajibío, Mercaderes; Popayán, Puracé, and Santander de Quilichao. It was planned then, a USLE model (Universal Soil Loss Equation) calculating its factors (A, R, K, LS, C, P). Thanks to Global Information Systems (GIS) primary information was recollected on field work and also through previous official reports and documentations. I was found that hydric erosion is mainly due because of 1500 mm precipitation causing annual losses of 973 ton/ha, amount that is substantially high over land's natural system recovery capacity. Findings provide considerable knowledge for afterward land planning and soil management in Andean Regions in Colombia. This research locates the most vulnerable areas to water erosion, essential to carry out implementation strategies for soil use and management such as; planting of crops with contour lines, management of noble covers, planting of live barriers, silvopastoral systems, application of humus, selective control of weeds, reduction of the use of hoe and agricultural machinery on steep slopes and the widespread use of herbicides, practices that will be able to improve the quality of water bodies and prevent the decrease in soil fertility. [ABSTRACT FROM AUTHOR]

Soils of four coffee plantations (organo-mineral, agroecological management with minimal management, conventional management and agroecological management) with different slopes and management were compared for one year. Soil sampling was carried out by season, organic matter, organic carbon, N, P, K, CEC, pH, texture and microbial respiration were measured. Organic carbon, N, organic matter, and microbial respiration varied. Soils with agroecological management presents higher values of organic matter (10.09%) and microbial respiration (621 μg C.CO2). Organic matter and microbial respiration were similar in coffee plantations with the same slope by season. There is a direct relationship between the content of organic matter, nitrogen with microbial respiration and other soil properties, but not with the coffee yield. Tlapacoyan coffee production decreases, at the pair with the sustainability and quality of the soils because of the adoption of technologies with the use of agrochemicals. [ABSTRACT FROM AUTHOR]

Traditional soil management is a very ancient practice which has contributed over time to destroy the soil structure worldwide. However, in this situation, researchers, producers, etc., are not indifferent and look for alternatives. Such is the case of conservationist management of the soil through minimal and conservationist tillage that mitigates the negative effects on the soil. Conservation agriculture (CA) began to be used in the American continent at the beginning of the 70's with proven benefits. Cuba, with its highly degraded soils due to its intensive use, decided to implement CA and shows some results of its implementation in different sites of the Artemisa, Pinar del Rio Camagüey provinces, with a tendency to incorporate new sites, such as those proposed in this work. An initial analysis was made in three sites, two in the province of Artemisa and one in the province of Guantánamo, which allows us to state that there are strengths and weaknesses that not impede the development of the CA and that its implementation is possible because there are the knowledge and the necessary equipment, aspects among others that facilitate the task. [ABSTRACT FROM AUTHOR]

Copyright of Ciencia en su PC is the property of Instituto de Informacion Cientifica y Tecnologica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Soil organic carbon reserves are the result of the balance established between its inputs and outputs, governed, in addition to environmental factors, by the quantity and quality of crop residues. The research was carried out in four areas where sugarcane is grown experimentally under different edaphoclimatic conditions, aimed to determining the carbon balance, the minimum amount of crop residues to leave in the field without sustainability to produce being affect; as well as the carbon conversion rate, influenced by management, fundamentally, using the Henin and Dupuis unicompartmental model. The highest carbon gains were detected in Ferralitico Rojo soil of Matanzas (0,11±0,003 t/ha/ear) and the lowest in the Oscuro Plastico Gelysozo Negro of Holguín (0,05±0,001 t/ha/year), while the highest losses corresponded to the Pardo con Carbonatos Plastogenico from Santiago deCuba (0,90 ± 0,016 t/ha/year) and the lowest to Oscuro Plastico Gleyzoso Negro from Holguín (0.53±0,006 t/ha/year). The presence of residues contributed to higher carbon inputs to the soil, compared to the burning of these in Holguín. Regarding the minimum amount of residues to leave in the fields, the highest values were detected in Ferralitico Rojo soils of Matanzas (9,31 ± 0,01 t/ha/year), followed by the Pardo con Carbonatos of Villa Clara; while the minors one were observed in the Oscuro Plastico Geysozo Negro soils from Holguín and Pardo con Carbonatos Plastogenico from Santiago de Cuba. Management strategies that help neutralize the soil carbon losses are recommended. [ABSTRACT FROM AUTHOR]

The journal Actualidad Jurídica Ambiental has recently published the monograph "Studies on the Waste and Contaminated Soils Law for a Circular Economy," directed by Alberto Palomar Olmeda and Antonio Descalzo González, and coordinated by Sofía Cabedo Uso. The monograph, edited by Aranzadi- Thomson Reuters in collaboration with the Pascual Madoz Institute of Carlos III University of Madrid, analyzes Law 7/2022, of April 8, on waste and contaminated soils for a circular economy. The work includes several chapters that address different aspects related to waste and contaminated soil management. Chapter 6, conducted by Dr. Eva Blasco Hedo, stands out in particular. The journal's team wishes readers a Merry Christmas and a prosperous New Year, and announces that publication will resume on January 9, 2023. [Extracted from the article]

The objective of the research was to evaluate the effect of management and establishment of two plant species on the structure of a saline soil. The soil structure condition of two areas with established plantations of artichoke (Cynara scolymus L.) and alfalfa (Medicago sativa L.) was described using the Cultural Profile methodology. Soil management of the crops included the application of organo-mineral fertilizers and irrigation. The results show that under the conditions of the artichoke crop, the root system was vigorous and intertwined with the soil, which creates a very favorable condition for the entry and conservation of water to the soil. The progressive cover of alfalfa allowed the establishment of a macrofauna and symbiotically associated microorganisms (Rhizobium meliloti), forming nodules on the roots, which produced a favorable development of the alfalfa and an evident regeneration of the structure. [ABSTRACT FROM AUTHOR]

Eucalyptus is the most cultivated hardwood tree genus in the world, valued for its yield and the quality of the wood for multiple uses; however, pathogens such as Rhizoctonia and Cylindrocladium threaten the establishment of the crop, since they cause seedling death in the nursery. Among the management strategies, disinfection of the substrate is recommended, and solarization is an effective alternative for the management of soil fungi. The objective of this research was to verify the survival of Rhizoctonia spp. and Cylindrocladium spp. in a nursery substrate subjected to solarization. The substrate was inoculated with two fungal isolates (Rhizoctonia spp. and Cylindrocladium spp.) at three depths (5, 10 and 15 cm), and treated with three solarization methods (free exposure, solarization and solarization + dazomet). Survival of pathogens in the substrate was measured at 15, 30 and 55 days after inoculation, and temperature at 10 and 15 cm depth. Solarization alone had no effect on pathogen mortality. Solarization plus dazomet decreased fungal presence by 100% at all depths and evaluation times. The solarized treatments increased substrate temperature by 49 and 40°C at 10 and 15 cm depth, respectively, with an increase of 10 and 7°C over the control. Therefore, solarization plus dazomet application can be used as a method of substrate disinfection in Eucalyptus nurseries. [ABSTRACT FROM AUTHOR]

Copyright of Agricultura Sociedad y Desarrollo is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Biológico Agropecuaria Tuxpan is the property of Revista Biologico Agropecuaria Tuxpan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Colombian horticultural area of eastern Antioquia is located on hillsides where lots of the productive capability of the soil has been lost due to the continuous tillage. The objective of the research was to determine the changes in the content of particulate organic matter (POM) and the mineralogy of an Andisol in six conditions of soil management, in Marinilla (Antioquia, Colombia). In split plots, the soil sample was taken in each situation, with three replications per treatment, in plots of virgin soil (VS) with 5, 10, and 20 years of conventional tillage (CT), and 5, 10 years of fallow (F). It was sampled with an auger to 0.2 m depth. In each sample the POM was quantified: chemical analyzes were carried out (pH, Mg, K, P, S) and physical (total porosity, bulk density, and mean weight diameter (MWD) of water-stable). The POM was sensitive to the tillage processes, decreasing by 35 % after 5 years and 75 % after 10 years, in relation to the virgin soil (VS). The POM was increased significantly during the first 5 years of fallow in relation to CT soils. The POM and MWD showed a logarithmic relationship (R2 = 0.80), which indicates the influence of the POM on the stable aggregates and on the physical fertility of the soil. In short time, the dynamics of OM with the amorphous oxides of Fe and Al have affected the mineralogy of the clay fraction due to soil management. [ABSTRACT FROM AUTHOR]

This work was carried out in the urban farm "Las Mercedes" in the municipality of Matanzas, Cuba, with the objective of evaluating the current use and management of soil resources to avoid its degradation and increase sustainable food production. The main agroproductive limitations of edaphic character were determined, and the fields were georeferenced. A field diagnosis was carried out to evaluate the effective depth, maximum slope, stoniness and presence of carbonates in order to establish the agrological class of the crop fields. The inadequacies in the use of the soils according to their suitability were established and the conservationist use and management of the fields was recommended in order to control soil degradation and achieve sustainable agricultural development. It was proposed to improve the current use and management of seven fields with agrological class IV, to work and arrange the furrows in contour in three fields with a 5-7 % slope, to change the use of two fields with agrological class VI and to subdivide two fields with different agrological classes. In addition, it was proposed to develop a rehabilitation project to improve the current use of a field with susceptibility to flooding and surface and internal drainage problems, whose diagnosis was limited in magnitude and quality in the present study. [ABSTRACT FROM AUTHOR]

Diverse techniques of restoration in dry lands are discussed, these allow to recover the floristic composition and the vegetation structure in degraded areas. Each considered aspect is supported by experiences with proven results. The importance of prevention and environmental evaluation is highlighted as a way to mitigate the negative impacts. In addition, the use of native species properly selected in the same phyt1ogeographic entity ensures the restoration. [ABSTRACT FROM AUTHOR]

The objective of the work was to estimate the net norms of irrigation of the sorghum crop (Sorgum vulgare L. Monech) according to the variability and climate change in the period 2020-2050. The Cropwat program was used as a tool. The climatic data for the study were taken from the Institute of Meteorology using as reference the monthly data of the new regional and global scenarios. It was obtained as a result that in both scenarios there are differences such that in the RCP 4.5 scenario the reference evapotranspiration was above the rainfall, which indicates that irrigation is necessary, despite the uncertainty that the analysis used in the estimation of ETo and specific values of rainfall in the water balance. However, in scenario A1b of the Echam 5 model, ETo was below rainfall except for the years 2037, 2040 and 2050, probably defined by the variables for calculating ETo at the global level, where rainfall seems to have another sequence and should be considered as an early warning for the water management of soils and crops in the face of climate change. Regarding the prediction of the net norms, it was appreciated that they have values above those used today for the cropos (2 300 m3·ha-1) since they were estimated as an average between 5076 m3·ha-1 for RCP 4.5 and 5 417 m3·ha-1 for Echam 5A1b, with increases of 120 % and 135 %, respectively. [ABSTRACT FROM AUTHOR]

Copyright of BIOAGRO is the property of Revista BIOAGRO and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

With the publication of this research results, we want to demonstrate that individual efforts that aim at the sustainability of agricultural production can give good results. This work corresponds to a case study in the social sciences, and is based on the experience of two farmers who work in the field and who are committed to respect the environment. When the food production is used looking for the generation of income as the main objective, it attacks nature. Here we demonstrate that there can be compatibility between profits and ecological respect when good soil management practices and adequate administrative techniques are applied. [ABSTRACT FROM AUTHOR]

This paper presents an experimental study, which compares the effect of the sensitivity against the cementation in the recovering of the stress-strain properties in clayey soils from "Sabana de Bogotá". The work methodology included three phases: (i) extraction of samples; (ii) properties assessment of the undisturbed samples; and (ii) stabilization and analysis of the resistance of the stabilized samples with cemented materials. An experimental plan, which included physical and mechanical tests, was developed. The plan had an emphasis on the assessment of the undrained shear strength and the elastic modulus through unconfined compression tests. The samples were compacted and stabilized with the addition of two solid chemical products, calcium carbonate and iron oxide. Results between natural, remoulded and stabilized were compared by means of statistical methods. Therefore, it was found that the use of iron oxide in this kind of soil allows obtaining stress-strain parameters close to the undisturbed state after the compaction process. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos de Vivienda y Urbanismo is the property of Pontificia Universidad Javeriana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Investigación Agraria is the property of Investigacion Agraria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of BIOAGRO is the property of Revista BIOAGRO and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Law 22/2011, of July 28, on waste and contaminated soils, transposes into Spanish law Directive 2008/98/EC of the European Parliament and of the Council on waste. This law promotes measures for the prevention, reuse, and recycling of waste, and establishes a new order of priority and hierarchy for waste. It also regulates the management of contaminated soils and establishes extended responsibilities for producers of products that become waste. The law came into effect on July 30, 2011, and repeals Law 10/1998 on Waste, among other provisions. [Extracted from the article]

The study was carried out to evaluate the structure and quality of two soil subtypes Eutric Cambisols and Vertic Eutric Cambisols, in the Villa Clara province, in areas of anthropic infiuence. Through the morphological characterization of the profiles and the land cover, that included the evaluation of physical and chemical indicators. The results obtained revealed, notable differences in the morphology of the profiles, which are not significantly associated with the different management systems, but they are attributed to the characteristics of each subtype. [ABSTRACT FROM AUTHOR]

Copyright of Investigación Agraria is the property of Investigacion Agraria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Geoarchaeological studies with microscopic analysis have been crucial for the verification of soils modified by human action. Micromorphology in Brazil has been used at sites, shell mounds and sambaquis in the south and southeast of the country, in rocky shelters in the Lagoa Santa region (Minas Gerais) and at «Terra Preta» sites in Amazonas and Acre states. So-called anthropic soils play a decisive role in the processes of addition and movement of organic, mineral residues and soil management practices. To identify and interpret the various types of human marks and activities on the ground, it is important to first understand how these changes occur. In principle, human-induced soil disturbances can be caused by processes of adding materials to the soil and these are identified in the micromorphological reading of thin sections. The archaeological sites of potters are located in the Araguaia river basin. Potters settlements in Goiás state were studied in order to identify when and how these groups were implemented in the central region of the country. These studies mention the existence of a darkened soil in the sites that had not been studied by micromorphological investigations until now. The relationship between the characteristics of the Cerrado biome, with its high acidity indexes, and human occupation in a given area is important to understand the taphonomy of the soil. The use of micromorphology demonstrated that even in acidic environments, it is possible to observe post-deposition alterations, microstratigraphic events, microscopic fragments of carbon, bones, various minerals, such as calcium, phosphorous, organic compounds, and ceramic microfragments, all related to anthropic activities from the potter sites. [ABSTRACT FROM AUTHOR]

The Government of Catalonia has approved the modification of the Decree on soil fertilization management, livestock waste, and the action program in vulnerable areas due to nitrates of agricultural origin. This modification aims to adjust the slurry production coefficients for fattening pigs and piglets, as the existing ones are outdated and do not reflect the technical and knowledge advances in water management on livestock farms. Additionally, it seeks to reduce the minimum distances for the application of nitrogen fertilizers to adapt them to the current reality. The modification came into effect on February 16, 2023. [Extracted from the article]

This document is focused on the generation of compost through the use of the Eisenia Foe-tida earthworm (Oligochaetes: Lumbricidae), which, at suitable metabolic conditions, promote the degradation of organic solid waste. This project evaluates the process of obtaining compost from organic solid waste generated in Álamos neighborhood, Bogotá, Colombia, through joint work with the community, in order to determine the amount of natural fertilizer that can be produced in the sector, in line with the policies of national organizations that intend to introduce the separation and use of households waste. It was established that organic waste accounts for 30 % of the waste generated in the sector, from which three worm farming beds were designed, with different substrates, the bed with the highest proportion (60 %) of cassava and potato residues being the one that produced the greater yield respect to the compost obtained. Regarding the quality of the product, the results obtained are similar in all the beds, reaching an excess of total nitrogen with respect to that required for commercialization. The results also present excess humidity, which suggests a drying process after obtaining the compost is needed. [ABSTRACT FROM AUTHOR]

Copyright of Agronomía & Ambiente is the property of Universidad de Buenos Aires. Facultad de Agronomia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction. A quarter of the world's agricultural soils suffer some degree of deterioration, especially due to anthropic factors. However, regeneration of soils is possible when conservation strategies are developed. Objective. Evaluate the effectiveness of soil conservation agroecological practices in the retention of hillside soils in the municipality of Guasca-- Cundinamarca. Materials and methods. Four treatments were established: live barriers, dead barriers, infiltration ditches, terraces and a control. For each treatment, four repetitions were performed, for a total of 20 experimental units (EU). Pea (Pisum sativum), bean (Phaseolus vulgaris) and carrot (Daucus carota) crops were established in furrows in counter-slope, obtaining 6 furrows per EU. In each EU a ditch covered with polyethylene was installed, with the aim of driving the volume of drained water and the solids dragged towards a final collector vessel. From the volume obtained, after a respective homogenization with a manual agitator, samples of 200 ml were obtained for subsequent drying and weighing in the laboratory. Results. The losses of soil and water by runoff presented a variable behavior, which can be attributed to the interaction among factors such as intensity and frequency of rainfall, soil texture, historical soil management and the variety of conservation practices used. Conclusion. All the soil conservation practices implemented contributed to reduce the loss of sediments, infiltration ditches being the best conservation practice, presenting an 87.8 % reduction in losses compared with the control. [ABSTRACT FROM AUTHOR]

Currently, in the main wine region of Argentina there are several management techniques of the vineyard, which impact on biodiversity and the supply of ecosystem goods and services. We wanted to investigate the perception degree that technicians and local grapevine growers have on the effects of inter-row management practices on the provision of ecosystem services, as well as their associated costs. Through interviews, we asked about the degree of contribution that the five inter-row management techniques identified over the main vine productive areas of Mendoza, have on 33 environmental, cultural and productive key variables. The perception values obtained were contrasted with current scientific knowledge to identify the degree of adequacy between them. Finally, by means of data triangulation, causal loop diagrams were constructed in order to explain the operation of the models from a complex system dynamics approach. Results show that local growers and technicians perceive greater environmental benefits in those managements with vegetation cover, particularly the permanent ones and those incorporating native species, in coincidence with the scientific evidence. Likewise, the causal loop diagrams show a greater complexity of relationships in these management techniques that could evidence a greater resilience of the agroecosystems and better possibilities of conserving the native biodiversity and its ecosystem services. [ABSTRACT FROM AUTHOR]

Copyright of Avances is the property of Instituto de Informacion Cientifica y Tecnologica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Investigación Agraria is the property of Investigacion Agraria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The sustainability of no-till and conventional tillage systems in semi-arid regions should assess soil property changes over time. In this way, the objective was to evaluate the changes in the physical and biological attributes of a Typic Eutrustox (Latosol) under different uses (no-tillage, conventional tillage and native forest) in the semi-arid region. The experiment was carried out in 18 x 18 m plots under no-till system (NT), conventional tillage (CT) and native forest (NF). Particle density, bulk density, porosity, penetration resistance, microbial respiration and soil organic carbon were determined at 0.00-0.05; 0.05-0.10; 0.10-0.20 and 0.20-0.40 m depths. The NT and CT changed soil physical properties of the surface layer, compared with NF, besides soil compaction increased in the arable layer (0.00-0.20 m) of CT. Soil under NF had superior biological properties compared to NT and CT in all evaluated depths. NT is the closest tillage compared to the NF conditions, regarding biological quality, represented by microbial soil respiration. After nine years of NT and CT, a continuous organic matter input is essential to maintain NT advantages over CT in the semi-arid conditions. [ABSTRACT FROM AUTHOR]

The article titled "How do we leave the soil to future generations?" talks about the Congress on Land Use and Management (UMS) and its importance in discussing issues related to soil and water management and conservation. The congress has had several editions in different countries, and the last edition was held virtually due to the pandemic. The objective of the congress is to promote the exchange of ideas and knowledge to understand soil and water degradation processes, as well as to develop sustainable management practices. Additionally, the collaboration between scientific journals in the joint publication of articles related to the topic is highlighted. The article was written by Ing. Agr. Dr. Marcelo Germán Wilson, a soil conservation researcher at INTA EEA Paraná and a member of the Organizing Committee of the Congress. [Extracted from the article]

Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

According to Andina (2011) the Peasant Agroecological Family Agriculture (AFA C) is proposed as an agriculture characterized by family workforce mainly; marked dependence on the goods and services provided by the natural (ecological) environment and its own agroecosystem; small and highly diversified production scale; development of its own technology adapted to its ecological, social and cultural condition; and immersed in the development dynamics of its community and region. The objective of this work was to identify the ecosystemic attributes of peasant family production units in the Cormechoque River microbasin, in Boyaca. The characterization is the description of the main attributes of the interactions between the components of the productive system. Typification refers to the establishment and construction of possible types of producers based on the characteristics observed (Mora et al., 2011). Visits were made to the respective productive units, as well as interviews and surveys to the producers. The presence and impact of variables such as: soil management, water management, agricultural diversity, agricultural practices, family, and housing were evaluated. Multivariate statistical analysis was done obtaining 4 differentiated groups with similar characteristics within each group. Their distribution percentage were 26.7%, 23.3%, 23.3% and 26.7%, respectively. [ABSTRACT FROM AUTHOR]

The general structure of the service for the technical assistance in the sugar cane soil tillage was based on three offers directed to the planning, the organization, the control and training: Technical attendance in the processes of soil tillage, Technical attendance in machinery management and Evaluation and trial of agricultural machines. This service is projected to reach the total area of the sugar cane crop in Cuba and to cover up the whole of the year. The attendance in soil tillage processes was applied to deforestation, land-leveling, fertilization and post-harvest field management, plantation and land preparation technological processes. For the planning of the farm works, the maintenance management and the machinery exploitation control a computer tools were programed. The recommendations given to the grower were technically based according to technological, energetical, economical and environmental approaches; taking in to account the results of more than 40 years of investigations of the INICA and other national institutions. To strengthen the material and human infrastructure of the INICA and to create a methodology for farm processes diagnostic on the service implementation was recommended. [ABSTRACT FROM AUTHOR]

Copyright of Revista Colombiana de Ciencias Hortícolas is the property of Revista Colombiana de Ciencias Horticolas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)