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Integrated systems (crops, livestock, and forest) are tools to avoid increases in greenhouse gas (GHG) emissions, such as CO2, CH4, and N2O. The objective of this study was to evaluate the GHG emissions and soil biological and chemical characteristics in an integrated system. The experiment was carried out in an area with crop-livestock-forest integration systems (CLFI), in Pindaré-Mirim, state of Maranhão, Brazil. Made available in DSpace on 2022-05-25T17:50:09Z (GMT). No. of bitstreams: 1 IntegratedProductionSystemsPlinthosolAJCS16.2022.pdf: 1026507 bytes, checksum: cc61964f26477fba9cc11514f63e314b (MD5) Previous issue date: 2022

Com o objetivo de estudar o perfil socioeconômico e tecnológico dos orizicultores no município de São Mateus do Maranhão, foram aplicados questionários estruturados, além do uso de dados secundários com pesquisa bibliográfica e documental. Com o levantamento dos dados, foi possível observar que a atividade da orizicultura em São Mateus do Maranhão é desenvolvida tanto por pequenos, médios e grandes produtores, com 73% organizados em associações, 24% em Sociedade Limitada (Ltda.) e 3% em empresa familiar, utilizando dois sistemas de cultivo, o irrigado e o sequeiro favorecido. Os resultados demonstram que a comercialização e a aquisição de novas tecnologias são uns dos principais entraves para os produtores, principalmente os pequenos, que têm dificuldades em obter tecnologias para melhorar a atividade e pouco acesso aos mecanismos de inserção no mercado. Isso aponta para a necessidade de políticas públicas que visem a uma assistência técnica direcionada para os canais de comercialização e, sobretudo, acompanhamento técnico efetivo. Made available in DSpace on 2021-12-08T14:01:25Z (GMT). No. of bitstreams: 1 bjd-2021.pdf: 473765 bytes, checksum: 45698954c86c6dd7b3c412d63cc6935b (MD5) Previous issue date: 2021

Aims: Aim was to analyze the economic viability of an integrated crop-livestock-forest (ICLF) system area, in the municipality of Pindaré-Mirim, State of Maranhão, Brazil, using the consortium of maize (Zea mays L.), forage species Urochloa brizantha cv. Marandu and Eucalyptus (Eucalyptus urograndis). Study Design: Case study. Place and Duration of Study: The work was developed in a Technological Reference Unit of ICLF of Embrapa Cocais, located in the municipality of Pindaré-Mirim - Maranhão, Brazil, between January 2016 and July 2017 and The experimental area was 3 ha, divided into three subareas: Treatment I - single corn planting; Treatment II - Barreirão system; and Treatment III - Santa Fé system. Methods: In this work, the method of operational costs was used. The following economic performance measures were calculated: Gross income (GI), Gross margin (GM), Net margin (NM), Profit, Leveling point (LP) and Rates of return (RR). The economic indicators calculated were: Net Present Value (NPV), Internal Rate of Return (IRR) and Benefit-Cost Ratio (RBC). The data collected from the costs and revenues of each treatment were tabulated and treated with the help of Microsoft Office Excel. Results: All the treatments presented a profit, being the Barreirão System the one that had better results, presenting P of 163 bags of maize ha-1, GI of US$ 1974, profit of US$ 780, LP in 99 bags, of 60 kg, of corn ha-1 and RR of 65.33%. Treatments I and III presented, respectively, P of 135 and 143 bags of maize ha-1, GI of US$ 1635 and US$ 1732, profit of US$ 504 and US$ 543, LP in 94 and 99 bags of corn ha-1 and RR of 44.63% and 45.67%. Conclusion: The results obtained reinforce the importance of studying the economic feasibility of ICLF system to provide the investor with the conditions for better decision making. Made available in DSpace on 2018-04-18T01:42:51Z (GMT). No. of bitstreams: 1 Rego2212018JEAI40316.pdf: 223345 bytes, checksum: 985e8e4a78fef57697fec8f4a19f1e1f (MD5) Previous issue date: 2018-04-17

The objective of this study is to estimate the production costs and profitability of corn cultivation in the setup phase of the crop-livestock-forest integration system for pasture recovery in the municipality of Pindaré-Mirim/MA, Brazil. The study was developed at the Technological Reference Unit (TRU) for the Integration of Crop-Livestock-Forest (ICLF) of Embrapa Cocais, located in the municipality of Pindaré-Mirim/MA, Brazil. Data collection occurred during the agricultural year 2015/2016. The management of the ICLF system was carried out following the molds of the “Santa Fé” technique. The cost of production was used to calculate the Total Operational Cost (TOC) and were extrapolated per hectare. For the economic analysis of corn production, three different prices were considered: (a) the price received by the producer; (b) the historical average of the last 30 months to the date of actual sale of the product; and (c) the minimum guarantee price of the federal government. The TOC was found to be US$ 1,672.72 per hectare. The economic efficiency indicators showed promising profit values, demonstrating that in this study with corn production in the 1st year, it would be possible to pay for the implementation of the ICLF system as an alternative for the recovery of degraded pasture.