1000 resultados para Cultivo temporario
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Pós-graduação em Cirurgia Veterinária - FCAV
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Cecropia pachystachya is a plant native to the states of Mato Grosso and São Paulo, usually found in rubber tree plantations. The goals of this study were to verify: a) whether the presence of C. pachystachya in rubber tree plantations influences the occurrence of mites in rubber trees; b) whether it can be used as a reservoir of predaceous mites; c) whether it serves as an alternative host for Leptopharsa heveae during the natural senescence of rubber trees. This study was conducted in two rubber tree plantations in São José do Rio Preto, in the state of São Paulo, Brazil. One of them had numerous naturally growing individuals of C. pachystachya, while the other was free of spontaneous plants. We registered high richness of predaceous mites on C. pachystachya, but only 37.5% of them were found on rubber trees, which reveals low displacement rate of mites between the plants. Among the species that were common to both plants, only the predaceous Zetzellia agistzellia and the phytophagous mites Allonychus brasiliensis and Eutetranychus banksi were influenced by the presence of C. pachystachya. The incidence of L. heveae did not differ between the plantations under study and, moreover, C. pachystachya was not used as an alternative host by this insect, since no individuals were registered on its leaves during the natural senescence of rubber trees.
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Pós-graduação em Medicina Veterinária - FMVZ
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
Diversidade bacteriana em solos, vinhaça e semicompostagem relacionados ao cultivo de cana-de-açúcar
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Pós-graduação em Microbiologia Agropecuária - FCAV
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O artigo avalia o descompasso entre a liberdade de expressão, que no Brasil é garantida por lei, e ações culturalmente orientadas de patrulhamento do uso linguístico, que proíbem referências a características ou comportamentos de determinados grupos sociais, especialmente minorias. O descompasso se transforma em equívoco grave quando tal policiamento se estende às atividades de natureza metalinguística, que, baseadas na reflexão sobre os usos existentes, equacionam os significados das entidades do léxico ativado. O estudo examina especificamente a tarefa lexicográfica e avalia sua natureza e seu papel, dentro do universo de construção do saber sobre a língua.
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The article presents one brief analysis on the current situation of the cultivation of coca, production of cocaine and fighting drug trafficking in Peru.
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Objective. The objective of this study was to evaluate the antimicrobial activity of the silver nanoparticles solution in enterococcus faecallis cultures (ATCC 29212), compared with various solutions of sodium hypoclorithe (NaOCl). Material and methods. Five Agar Petri plates were inoculated with E. faecallis and each of them was placed a cellulose dish embedded with silver nanoparticles solution, or a solution of sodium hypochlorite evaluated (Viarzon, Cloralex, Clorox). Chlorhexidine digluconate 2% was used as positive control and sterile saline solution was used as negative control. After 24 hours of incubation at 37ºc, under aerobic conditions, the zones of inhibition of bacterial growth were measured and the results subjected to the statistical t test among the experimental groups (= 5%). Results. The Cloralex showed to be the most effective reflected in the extent of inhibition in relation to other substances (p< 0.05), except that the chlorhexidine digluconate 2% (p> 0.05). The solution of silver nanoparticles provided a greater zone of inhibition than the sodium hypochlorite solution (Clorox) and Viarzon (p< 0.05). Clorox and Viarzon didn't provide zones of inhibition and were similar to each other (p> 0.05). Conclusions. The solution of silver nanoparticles presents antimicrobial activity in cultured E. faecallis, even higher than other commercial forms of sodium hypochlorite. Further studies should be carried out to determine its viability as irrigating solution in endodontics (AU)
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Pós-graduação em Agronomia - FEIS
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Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA