998 resultados para Cultivo de hortalizas
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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
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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The use of new substrates, which do not lead to extinction of important species such as xaxim, has gained special attention to the cultivation of ornamental and exotic plants. This study aimed to evaluate the potential of using corn cob as substrate for growing orchids. Thus, we used plants of Laelia pulcherrima grown in pine bark (control) and corn cob. We evaluated the development and physicochemical characteristics. We assessed also the benefit of fertilization for the development of this species in both substrates. The corn cob had higher nutrient contents and higher water retention capacity than pine bark, as well as pH and porosity more appropriate. Plant development of L. pulcherrima on the cob was comparable to that obtained with pine and the use of fertilizer promoted the best growing, especially when the substrate used was the cob. Thus, it is recommend to use the same for the cultivation of this orchid.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA