Estudo comparativo das relaçoes entre os nutrientes dosados em folhas de café citrus e melho
From the analysis of leaves of coffee, citrus, and corn plants, comparative studies were made in order to establish relations among several elements. The leaf samples for the chemical analysis were collected from plants grown on four types of soils, as described below. 1 - Latosolic B; 2 - Ortho-Red Yellow Podzolic soils; 3 - Podzolized Soils on calcareous sandstone of Lins and Marilia variation; 4 - Ortho Dark Red Latosol. Multiple correlation as well as multiple regression were determined, and the relations among the elements are described. The results confirmed relations already known through simple correlations as the antagonism between K+ and Ca exponent2+ and/or K+ and Mg exponent2+, the latter being strong in Latosolic B. Moreover, they revealed the existence of other ones. Calcium and phosphorus showed antagonism in corn and coffee and synergism in citrus leaves. On the other hand, while sinergism ocurred between N and P in corn and coffee, there was an antagonism in citrus between these elements. Phosphorus correlated positively with K+ in the three crops studied. No or few significant correlation coefficients were found for the micronutrients
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| Format: | biblioteca |
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| Subjects: | FISIOLOGIA, ANALISIS DE TEJIDOS, ANALISIS QUIMICO, CONCENTRACION, ANTAGONISMO, BRASIL, NUTRICION MINERAL, ANALISIS FOLIAR, MACRONUTRIENTES, MICRONUTRIENTES, SINERGISMO, |
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