949 resultados para Grãos armazenados
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1991
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1997
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1997
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2007
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2008
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2002
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2001
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Slide 1: Embrapa Trigo - 31 anos. Slide 2: Localização. Slide 3: Histórico. Slide 4: Missão. Slide 5: Infra-estrutura. Slide 6: Recursos Humanos. Slide 7: Missão nacional. Slide 8: Apoio regional. Slide 9: Áreas de pesquisa. Slide 10: Principais resultados. Slide 11: Cultivares de trigo. Slide 12: Cultivares. Slide 13: Cultivares. Slide 14: Sistema plantio direto. Slide 15: Controle biológico de pulgões. Slide 16: Máquinas e equipamentos para o sistema plantio direto. Slide 17: Rotação de culturas e integração lavoura-pecuária. Slide 18: Qualidade tecnológica do trigo. Slide 19: Zoneamento agroclimático. Slide 20: Manejo integrado de pragas em grãos armazenados. Slide 21: Obrigado.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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A resistência de 30 genótipos de milho ao ataque de Sitophilus zeamais Mots. foi avaliada em teste sem chance de escolha, sendo efetuada uma seleção de 10 deles (M 9560, XHT 12, A 952, AG 5011, X 9557, Z 8452, C 615, C 435, DINA 888, C 606), os quais foram submetidos ao teste com chance de escolha, avaliando-se a atratividade e a preferência para oviposição. Pelos resultados concluiu-se que os genótipos menos atrativos foram Z 8452 (3,1%) e M 9560 (3,2%), enquanto o mais atrativo foi C 615 (24,7%). Os genótipos que apresentaram resistência do tipo não-preferência para oviposição foram A 952, M 9560 e XHT 12 com números médios de 2,0; 3,0 e 3,4 ovos por recipiente. A resistência do tipo não-preferência para alimentação e/ou antibiose foi observada nos genótipos M 9560, A 952 e Z 8452. Os genótipos com alta suscetibilidade ao gorgulho foram C 435, C 444, C 606 e AG 8010.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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The use of Information and Communication Technology has grown in most agricultural activities. As a consequence, it has changed the way of thinking and acting of the farmer who wants to establish a more and more competitive market. However, the high costs of acquisition and maintenance of those technologies may be a factor which can inhibit its spread and acceptance, mainly to a large number of small grain Brazilian farmers. In this context, there is a need for innovative solutions that are proper for this universe of farmers. Starting from this premise, this paper presents the development of a low cost prototype to the monitoring process of temperature and humidity values of grains stored in silos, using communication based on wireless technology by radio frequency. Therefore, the economic implications of cost/benefit ratio of innovative application of wireless transmission in the process of thermometry of grains were analysed. The prototype was made of two electronic units, one of acquisition and another one of data reception, as well as computational software, which offered the farmer more precise information for the control of aeration. By means of stability, integrity and reliability tests of data transmission via radio, using low cost electronic components, the development system can be considered as potentially viable. It presented the difference regarding the wireless communication via radio in the process of grains thermometry, providing mobility, reducing cabling costs and maintenance, and also offering an easy system expansion; it was also appropriate to temperature and humidity monitoring in grain silos; and revealed operational viability, besides the low cost development when compared to similar products available in the Brazilian market.
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Beans fromcowpea cultivars fertilized with mineral N or inoculated with various rhizobium strainsmay contain different nitrogen concentrations and nitrogen metabolite composition, which affects the beans? defense mechanisms against pests. In this study, the population growth of Callosobruchus maculatus reared on beans from four cowpea cultivars fertilized with different nitrogen sources was evaluated. The factors tested were beans from four cowpea cultivars and seven different nitrogen sources: mineral N fertilization, inoculation with five strains of symbiotic diazotrophic bacteria, and soil nitrogen (absolute control).