Vermicompost formulation based on soybean husk and cow manure on shallots

Abstract

Shallot is one of an important vegetable in Indonesia. The yield of the crop is often constrained by low and unbalanced nutrient supply in the soil. The application of vermicompost based on soybean husk and cow manure can increased nutrient supply in the soil. This research aimed to obtain the optimum vermicompost formulation and doses based on soybean husk and cow manure on shallots. This research is a field that arranged Randomized Complete Block Design (RCBD) with 1 factor (vermicompost formulation (V) that consisted 4 doses for each treatment and 3 replication was applied. The treatment consisted of vermicompost formulation (V): 100% soybean husk, 100% cow manure, 50% soybean husk: 50%: cow manure, 75% soybean husk: 25%: cow manure and 25% soybean husk: 75%: cow manure. Each treatment consisted of four doses: without application, 5, 10, 15 t. ha-1, so the total treatment was 20 level. Data were analyzed using the least significant difference (LSD) test. The result indicated that vermicompost formulation gave significant effect on all of observation parameters on the growth and yield. The lowest response of shallots occurred in the treatments without vermicompost application on all formulations, and the highest was in the 100% soybean husk formulation at a dose of 15 t. ha-1