RESUMOFoi estudada à marcha de absorção de macronutríentes nas variedades de atroz IAC-164 e IAC-164 cultivadas em soluçlo nutritiva, chegando-se às seguintes conclusões: as curvas que descrevem a acumulação de matéria se ca e de nutrientes apresentam tendên¬ cia sigmoide; o período de maior absorção vai do perfilhamento pleno à * Entregue para publicação em 23/12/1982.Com ajuda da FAPESP, CNEN, CNQq e BNDE.
Abstract:Pinus patula is one of the most planted wood conifer species worldwide; however, no foliar 9 nutrient standards exist for this species up to date. The objective of the present study was to generate 10 and verify two sets of foliar nutrient standards for nearly ten-year-old P. patula trees: critical nutrient 11 concentrations and DRIS norms. Nutrients studied were N, P, K, Ca, Mg, Fe, Cu, Zn, Mn, and B. The
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