Distribui??o do sistema radicular do maracujazeiro-doce cultivado com aduba??o química e organica

摘要

The experiment had as purpose to evaluate the fragant granadilla (Passiflora alata Dryand) roots distribution, cultivated in Nitossolo Vermelho, under chemical and organic fertilization, in Botucatu/SP. It was utilized plants with 19 months, in production, driven in "latada" and with irrigation. The treatments with fertilizers chemical and manure were: T1 (400g ammonium sulfate), T2 (2,5kg of manure), T3 (5,0kg of manure), T4 (7,5kg of manure) e T5 (10,0kg of manure), enhanced with 200g of termophospate, 137g of potassium chloride and 2,0kg of calcareous for plant, parceled in two applications. It was evaluated 3 plants by treatment, with four replications of each one, at 0-20 and 20-40cm of deep and distance of the stem. The results showed that there were no significant differences among the treatments for dry weight of the roots. In all the treatments there was concentration of the roots at 0-20cm distance of the stem. The treatments with organic fertilizer had the best deep roots distribution.