Navegando por Assunto "Sistemas agrícolas (PERGAMUM)"

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Contribuição da agricultura familiar na construção do conhecimento agroecológico: estudo de caso do Projeto Raízes da Terra
(Universidade Federal do Pará, 2012-08-31) FERREIRA, Josie Helen Oliveira; AZEVEDO, Célia Maria Braga Calandrini de; http://lattes.cnpq.br/8900515523984968; KATO, Osvaldo Ryohei; http://lattes.cnpq.br/4241891652832872; https://orcid.org/0000-0002-2422-9227
Shifting cultivation, characterized by the use of fire in land preparation, has caused negative consequences for family farms, resulting in large deforested areas with low productivity and decreased regenerative capacity of secondary vegetation. The search for sustainable alternatives to slash and burn agriculture based on agroecological principles can result in a more sustainable rural environment development. Experiences has being tested by farmers through Project Raízes da Terra, therefore this work has as main objective to evaluate farmer’s contribution in agroecological knowledge construction in municipalities of Igarapé-Açu and Marapanim, identifying the reasons that has led to agroecological principles adoption in agroecosystem management. For this, were evaluated methodological processes and participatory tools experienced by farmers to introduce agroecological practices on land use systems to improving agroecosystems sustainability. The fire use was reduced from 28.5 ha in 2005 to 2 ha in 2011, production diversification has increased 51% when compared to the period 2005 to 2011, with establishment of 42ha of multistrata agroforestry from 2006 to 2007 and expanded to 55ha in 2011 representing 13 ha more than planned by Project Raizes da Terra. Concluding that the process of agroecological knowledge construction practiced by Project Raizes da Terra farmers contributed to development of an agroecological agriculture-based.
Desconhecido
Diversificação produtiva em agroecossistemas familiares nos municípios de Santa Maria das Barreiras e Conceição do Araguaia, Pará
(Universidade Federal do Pará, 2012) NOGUEIRA, Ana Caroline Neris; SILVA, Luis Mauro Santos; http://lattes.cnpq.br/7285459738695923; https://orcid.org/0000-0003-1311-1271
This study aimed to evaluate the process of diversification of agroecosystems located in the southern portion of Pará, departed from the sample that participated in the projects that the CPT performed in order to guarantee the food sovereignty of the settler families by offering diversified products and conservation environmental awareness courses with the use of fire as a management and the effect of specialization in cattle raising and training courses on the implementation of productive activities. These initiatives have started a phase where the context for the establishment of diversification was unfavorable, that due to lack of public policies, low investment capacity of farmers and cattle farming on the forest. At this stage, there have been farmers who chose to diversify, some have managed to maintain diversification, but others did not carry on activities. Subsequently, the second phase of the historical region that began late in the 1990s, enabled a larger opening investment of the federal government, through public policies that started to incorporate the family farm, PRONAF (founded in 1996) was a good example. Even in this more favorable context was not possible for many families opt for diversification and not that they were able to maintain their productive activities.To understand the factors that led to withdrawal or that favored the installation of diverse projects is necessary to go beyond the aspects extra lot to understand the peculiarities of each situation, as well as projects of the family are crucial to understanding this process. The assessment of sustainability wide agroecosystems was ensured by the use of the tool MESMIS, the indicators raised in the environmental, social and economical solution showed a high diversity of realities, the best performance among the agroecosystems of the two phases, is in the 1st phase of history the region and the worst performances in the 2nd phase of dynamic change in production, it strengthens the internal aspects of agroecosystems, their limitations and strengths are crucial to the success or failure of diversification. The size was a more fragile environment, some families do not have the native area, or the entry by fire or livestock feed. In the social dimension, the labor was the most significant indicator, as in the technical-economic indicators most significant were the efficiency of management (limitation, income, productive diversity) and the current diversity of agroecosystems.