科研之友
微信
新浪微博
Facebook
分享链接
摘要
Este experimento foi executado no Centro de Ci那ncias Agr芍rias da UFPB,Areia, Estado da Para赤ba, com objetivo de avaliar a fertilidade de substratos compostos por diferentes concentra es de fibra de coco (0 a 40%), esterco bovino (0 a 25%), terra vegetal (25 a 70%), 15% de areia e adubados com superfosfato triplo (0; 5,5 e 11 g L-1). Houveaumento das caracter赤sticas qu赤micas desej芍veis do substrato com aumento da concentra o de terra vegetal, fibra de coco e dose m芍xima do superfosfato triplo. A fibra de coco provocou aumento do teor de s車dio nos substratos. Recomenda-se utilizar o substratoconstitu赤do de 0 % de esterco, 46% de terra vegetal, 39% de fibra de coco, 15% de areia e 11 g L-1 de superfosfato triplo para obten o dos m芍ximos valores estimados de mat谷ria organica, pot芍ssio, magn谷sio, c芍lcio e f車sforo, e m赤nimo para H++Al+3 e s車dio. This experiment was carried out at Centro de Ci那ncias Agr芍rias of UFPB, Areia, state of Para赤ba, whose objective was to evaluate thefertility of the substrata composed by concentrations of coconut fiber from 0 to 40%, manure bovine from 0 to 25.5%, soil from 25 to 70%, sand 15% and triple superphosphate between 0 and 11 g L-1. There was increase of the desirable chemical characteristics to thesubstratum with the increase of the concentration of soil, coconut fiber and maximum dose of the triple superphosphate. The coconut fiber increased the tenor of sodium in the substrata. It is recommended to use the concentrations of 0% of manure, 46% of soil, 39% of coconut fiber, 15% of sand and 11 g L-1 of triple superphosfate, to obtain the maxima estimated values of organic matter, potassium, magnesium, calcium and phosphorus, andminima for H++Al+3 and sodium.
