Evaluation of the quality of organic fertilizer on different ratio of cow manure and laying hens manure

Abstract

The study evaluated the quality of organic fertilizer on the different ratios of cow manure and laying hens manure. The study used a completely randomized design with five treatments, such as T0 (100% cow manure), T1 (75% cow manure and 25% laying hens manure), T2 (50%cow manure and 50% laying hens manure), T3 (25% cow manure and 75% laying hens manure) and T4 (100% laying hens manure). The parameters observed in this study contained nitrogen (N), phosphor (P), potash (K), carbon (C) organic, C/N ratio, and pH. The results showed the ratio of cow manure and laying hens manure had a significant effect (P<0.05) on the content of the N, P, K, C organic, and the C/N ratio, but no significant effect (P>0.05) on pH. The fertilizer with laying hens manure had the highest (P<0.05) contain N (1.57%), P (1.39%) and K (1.31%), but the lowest of the C/N (14.67%).