Relaçao entre os nutrientes dosados nas folhas de cafeeiro
The relationship among the elements N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Mo and Zn contents of coffee (Coffea arabica cv. "Mundo Novo") leaves was studied. The plants were grown on the three soil types of the State of Sao Paulo: "Terra Roxa", Podzolized soils of Lins and Marilia and Ortho-Red Yellow Podzol. The samples were taken in the Spring (September-October, when blossoming occurs), in Autumn (April-May, during fruit ripening) and in the Summer (January - February, when the coffee fruit is developing). The leaf contents of each element were compared with the contents of the others by multiple lineas regression analysis, using the mathematical model: Y = a + b subíndice 1 x b1x1 + b2x2 + .... + bnxn. Positive correlations were-found-between N and P, P and K, and P, and Mg contents of the leaves, and negative correlations between K and Mg, K and Ca and N and B. For the microelement contents of the leaves, only a few correlations were observed
| Main Authors: | , , , , |
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| Format: | biblioteca |
| Published: |
Dic
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| Subjects: | COFFEA ARABICA, FISIOLOGIA, ANALISIS DE TEJIDOS, CONCENTRACION, ANTAGONISMO, BRASIL, NUTRICION MINERAL, MACRONUTRIENTES, MICRONUTRIENTES, MUNDO NOVO, |
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