Navegando por Assunto "Sistemas agrícolas"

Agora exibindo 1 - 5 de 5

Acesso aberto (Open Access)
Análise agrossocial da percepção de agricultores familiares sobre sistemas agroflorestais no nordeste do estado do Pará, Brasil
(Universidade Federal do Pará, 2008-12) HENKEL, Karl
In 2005 a case study was undertaken in agroforestry systems as practiced by family farmers in the Arapuã-Simeira colonization project, municipality of Garrafão do Norte, Pará state, in northern Brazil, with the purpose of describing and systematizing the agrosocial characteristics of the family farmers and their experiences and perceptions of agroforestry systems. The methodology consisted of field research, application of standard questionnaires, observation and discussion in group. Farmers gave preference to some perennial cultures and forest species for intercropping, and the main explication for the introduction of species in their fields was economic gain and social behavior. Multifaceted thinking is seen in the choice of agriculture products and management options, resulting in each property having a combination of different agricultural systems that are adapted to local conditions. The farmer knows better than anyone else how to determine the ideal combination for his agricultural system. The study shows the agrosocial and socialcultural trajectory of the farmers and hypothesis are advanced on what would imply the adoption of agroforestry systems in family agriculture. A systemic approach can be very useful in understanding the relationships and social processes that are important aspects of the rural and agrarian question.
Acesso aberto (Open Access)
Competitividade inter-regional de sistemas de produção de bovinocultura de corte
(2013-08) OAIGEN, Ricardo Pedroso; BARCELLOS, Júlio Otávio Jardim; CANOZZI, Maria Eugênia Andrighetto; SOARES, Jean Carlos dos Reis; CANELLAS, Leonardo Canali; ALVES, Carine Oliveira; TAVARES, Héliton Ribeiro; COSTA, Fabrício Martins da
This paper presents a methodology for evaluating production systems by measuring the intern competitiveness of in beef cattle. During the first quarter of 2010, questionnaires were administered to 65 farmers, 36 interviews in the Southern Region (State of Rio Grande do Sul) and 29 in the Northern Region (States of Pará and Rondônia). Defined the key drivers that affect the international competitiveness - technology, management, market relations and institutional environment, an specific weight was assigned to each in order to get the index of competitiveness. The results were statistically analyzed by the item response theory and the correspondence analysis (ANACOR) with the SPSS® software. The South was more competitive than the North. Regardless of region, the critical factors of competitiveness were: crop-livestock integration, strategic planning, calculation of financial indicators, beef pricing, access to technological innovations and organization of farmers.
Acesso aberto (Open Access)
Indicadores de carbono do solo em sistemas agroflorestais com potencial de uso em processo de transição produtiva agroecológica
(Universidade Federal do Pará, 2017-04-18) PANTOJA, Kelly Regina da Silva; VASCONCELOS, Steel Silva; http://lattes.cnpq.br/0719395243841543
Traditional production systems have proved to be unsustainable in the socioeconomic and environmental spheres. A less aggressive agriculture is an alternative for the conservation of ecosystems. The process of changing from a traditional management for an alternative one is called a productive transition. The objective of this study was to evaluate soil carbon indicators in traditional and alternative production systems in areas of agroecological productive transition. The study was conducted in family farms located in Igarapé-Açu and Tomé-Açu, municipalities of the northeast of Pará. Traditional (slash-and-burn) and alternative (cut-and-grind and AFS) systems were selected, as well as secondary and primary forests (used as a reference area). The litter stocks, carbon stocks in the soil, densimetric fraction of soil organic matter and litter were analyzed. Also, an evaluation of the potential of the carbon stock as a subsidy to estimate environmental services was made. The cut-and-grind system presented the highest litter stock and carbon stock in the litter, while the AFS did not differ from reference areas. For the carbon stock in the soil and the densimetric fraction of soil organic matter no significant differences were found between the systems and the reference areas. Alternative systems had a large capacity to store carbon. The quantification of carbon stocks (soil and litter) and the stock of litter shows potential as an indicator to subsidize the provision of environmental services, as well as certify the quality of agroecosystems.
Acesso aberto (Open Access)
Sustentabilidade dos sistemas agrícolas: uma análise no contexto da agrodiversidade. Um estudo de caso na Amazônia Oriental
(Universidade Federal do Pará, 2005-04-07) CAHETÉ, Frederico Luiz Silva; PONTE, Marcos Ximenes; http://lattes.cnpq.br/0120823127408114
The study has as objective to evaluate the process of sustainability e in agricultural systems, having as parameter the energetic and economic flows amongst its compartments, whose dynamic is regulated for the agro diversity of an agrarian environment in transition. The field work was carried through in the municipality of Igarap?-A?u, Northeast of the Par? State. Initially was made one survey in 60 productive units, following itself of application of a questionnaire in 25 units, systemic modeling in 11, and interviewing with on local agents productive, which them are direct or indirectly the branches of agricultural interests. Analyze of the data involved a modeling, subsidized for one exam of context. The result of analyses disclosed mechanisms that characterize the distinct logicals that guide the agro ecologic and economic processes. The model bred allows: to configure the dynamical structural of these systems, to estimate theirs respective levels of dependence to the resources, as well as the necessary time and area to obtain of equivalents costs of chance to the processes of agricultural production, to identify limiting points of agrarian evolution in the Municipality. These ecological/economics parameters, pioneering defined, can be considered as basic tool for planning a sustainable agrarian development.
Acesso aberto (Open Access)
Uso do território, experiências inovadoras e sustentabilidade: um estudo em unidades de produção familiares de agricultores/as na área de abrangência do Programa PROAMBIENTE, Nordeste Paraense
(Universidade Federal do Pará, 2006-04-12) OLIVEIRA, José Sebastião Romano de; KATO, Osvaldo Ryohei; http://lattes.cnpq.br/4241891652832872
This study it evaluated the sustainability of the innovative experiences using indicator and criteria based on scientific theory the perception of peasants in the Irituia, São Domingos do Capim, Concordia do Pará and Mãe do Rio counties in an area encompassing the Polo Rio Capim, the PROAMBIENTE program. The objective was understand the daily of those social actors on the land using less stressful technologies on the environment and the reasons that led them to extend the traditional home garden or yards for other parcels of the Units of Familiar Production (FPU), turning them into Agroforest Systems (AFs). Questionnaire was applied and empirical data were collected, as well as interaction took place with the people involved in 78 FPUs allowing of variability indntification for Factor Analysis, establishing four factors of production and commercialization; production practices; intervention and gender questions. The first factors was used as criterium and requiring the return of the surveyor to 18 FPUs to apply the questionnaire and evaluation forms on the social, economic, cultural and environmental-ecological indicators. The sustainability evaluation was done by means of grouping these indicators using the Ameba agroecological method and by mapping using the interpolation method next door neighbor in the study area. Cultural and ecological/environmental indicators led to better conditions in terms of sustainability, in the range of good to excellent while the social economic indicators led to results appraised as weak to fair.