11,091 research outputs found
Soluções da Embrapa em manejo e sistemas de produção de frango de corte.
Projetos:11.11.11.111
Estudo agroecológico de agricultoras familiares de base ecológica no sudoeste da Amazônia (Outro Preto do Oeste, Rondônia).
bitstream/item/25829/1/documentos-81.pd
Agroforestry systems and food security among smallholder farmers of the Brazilian Amazon: a strategy for environmental global crisis.
The Amazon is known for its environmental importance for the climatic equilibrium, for its abundance and richness in biodiversity and its preservation is important to reduce global heating. Nevertheless, little research has analysed the possible positive role of the local farm population for environmental conservation. The paper investigates the possibility to conciliate the environmental conservation with the small farming expansion in the Amazon, to build agrobiodiversity, and at the same time improve food security. This social practice consequently would contribute to the reduction of deforestation and could thus falsify the old diagnosis of incriminating the poor farmers for forest and soil destruction. The study was conducted by the Associação de Produtores Alternativos, localized in territory of Ouro Preto d? Oeste, Rondônia, in the Southwest of the Amazon. The study documented a number of forest preservation and agroecological methods used and concludes that institutional support to strengthening of social organization and local sustainable development projects is fundamental for the consolidation and amplification of the ecological experiences in the Amazon
Agroforestry systems and food security among smallholder farmers of the Brazilian Amazon: A strategy for environmental global crisis.
The advent of organic farming models: analysis of the current situation and perspectives in Brazil.
This text analyses the development of organic farming in Brazil. It shows the great variability of social models of organic production recognised by Brazilian Law: organic, agroecological, ecological or biodynamic agriculture, permaculture etc.. It depicts how the political and social concerns in the spheres of family farming and environment caused the reorganisation of production systems, in the agricultural practices and n the new relationships with the market and with natural resources. Based on interviews with farmers and stakeholders involved in the development of various organic systems, we qualified the related models of production as well as the related social and cultural values. We also present some aspects of the historical roots of this agroecological movement and the way family farmers adapt to the new challenges of ecological production
Brazilian multifaceted ecologically-based agriculture: Between conventionalization and agroecological principles application.
Caracterização de isolados de Fusarium oxysporum f. sp. cubense (Foc) quanto à compatibilidade vegetativa e à patogenicidade em cultivares de bananeira diferenciadoras de raça no Brasil.
Murcha de Fusarium é causada por Fusarium oxysporum f . sp. cubense (Foc), um patógeno altamente variável. Porém, o efeito da heterocariose sobre a classificação taxonômica e a importância da formação de um heterocário entre isolados selvagens de espécies de Fusarium ainda não é clara e permanece amplamente debatida. Assim como a recombinação parassexual tem sido relatada em F . oxysporum. f . sp. cubense , para explicar as relações genéticas entre isolados pertencentes à mesma raça ou formae specialis. Grupos assexuais isolados geneticamente e identificados nestes estudos, são denominados de grupos de compatibilidade vegetativa (GCV). P orém, outra forma de determinação de raças deste patógeno, tem sido através de variedades indicadoras, utilizando-se as variedades Gros Michel para a Raça 1; Bluggoe para a Raça 2; Grande Naine para a Raça 4. O presente estudo teve como objetivos determinar a diversidade genética entre isolados de Foc, através destas duas técnicas, de forma a identificar quais as raças do patógeno, que de fato existem no Brasil. A análise genética, foi feita com base na técnica de UPGMA, utilizando-se o coeficiente de similaridade de Jaccard. A técnica de GCV permitiu agrupar os isolados das Regiões Nordeste e Sudeste do Brasil no GCV 1 e os da Região Norte, no GCV 2. Enquanto que, o teste de patogenicidade permitiu determinar a presença da raça 1, através de sua patogenicidade em Gros Michel e da raça 4, em Grande Naine. Além de, agrupá-las dentro dos mesmos GCV
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