normas dris para cupuaçuzeiro cultivado em monocultivo e em sistemas agroflorestais dris norms for cupuaçu trees cultivated in monocultures and in agroforestry systems

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ID: 165975
2010
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Ranked #66 of 193 articles by views in proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006

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Abstract
O objetivo deste trabalho foi avaliar a performance de normas DRIS específicas ou gerais no diagnóstico do estado nutricional do cupuaçuzeiro (Theobroma grandiflorum), na Amazônia Sul-Ocidental. Amostras foliares de cupuaçu foram coletadas de 153 pomares comerciais, com idade entre 5 e 18 anos, cultivados em monocultivo ou em sistemas agroflorestais. Foram geradas normas DRIS específicas para cada sistema de produção e normas gerais, obtidas para o conjunto da população monitorada. Na obtenção das normas, foi considerada a relação nutricional entre N, P, K, Ca, Mg, Fe, Cu, Zn e Mn. A maioria das médias das relações bivariadas entre nutrientes e dos diagnósticos produzidos pelas normas DRIS específicas não diferiu em relação aos produzidos com o uso da norma DRIS genérica. Portanto, a avaliação do estado nutricional de cupuaçuzeiros pode ser realizada com o uso de normas DRIS genéricas, que independem do sistema de cultivo.
The objective of this work was to evaluate the performance of specific or generic DRIS norms regarding diagnosis of the nutritional state of cupuaçu (Theobroma grandiflorum) orchards, in Southwestern Amazonia. Cupuaçu leaf samples were collected from 153 commercial orchards with ages ranging from 5 to 18 years, cultivated either in monoculture or in agroforestry systems. Specific DRIS norms, obtained for each production system, and generic norms, for the entire population, were generated. DRIS norms were obtained considering the nutritional relationship between N, P, K, Ca, Mg, Fe, Cu, Zn and Mn. The majority of bivariate relation means between nutrients and diagnostics obtained from the specific DRIS norms did not differ in comparison to the ones obtained when the generic DRIS norm was used. The evaluation of the nutritional state of cupuaçu orchards can be done using generic DRIS norms, which do not take into account the production system.
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Authors ;Jairo Rafael Machado Dias;Daniel Vidal Perez;Lucielio Manoel da Silva;Cleigiane de Oliveira Lemos;Paulo Guilherme Salvador Wadt
Journal proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006
Year 2010
DOI
10.1590/S0100-204X2010000100009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000100009
Keywords
estado nutricional amazonia

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