Efeitos de doses de água residuária de fecularia de mandioca no índice de área foliar e na produção de massa seca na cultura do feijão.

Abstract

O present work studies the use of residual efluente of fecularia as fertilizing source, in way to take advantage and to recycle the nutrients in the soil, favoring the culture of the bean and being avoided, like this, the spillings in the courses of water. The experiment was accomplished at the Campus of the Sandstone of the State University of Maringá, municipal district of Cidade Gaúcha, latitude 23°22' South, longitude 52°56' West and medium altitude of 404m, using the culture of the bean, being obtained the acting as for the production of dry mass and the of leaf area index the effects of the following levels of residual efluente were Evaluated: 0, 150, 300, 450, 600, 750 m3ha-1 and 150 kg have-1 of NPK in the formulation 4-20-20. The experimental delineamento was in blocks at random with four repetições.As you analyze were done in four times during the cycle of the culture. The maximum values of the index of foliar area and mass dries were obtained with the application of 450 m3ha-1 a regression equation was Adjusted respectively for the index of foliar area and production of dry mass being obtained R2 0,92 and R2 0,85, not presenting significância at the level of 5% of probability.