Optimization the ratio of concentrations of liquid organic and inorganic fertilizers to increase soybean production

Abstract

This Study aims to determine the effect of the application of liquid organic fertilizer (LOF) combined with various levels of basic fertilizer in an effort to improve growth and increase soybean production. The research used 2 factorial randomized block design (RBD). The first Factor K (LOF) concentration consisted of ; K1 = 10.7%; K2 = 14.3% and K3 = 17.9%. The second factor is D (ratio of inorganic fertilizer N, P2O5, K2O), D1 = 30: 80: 30, D2 = 40: 90: 40, D3 = 50: 100: 50. The treatment was repeated 3 times. Data was analyzed using analysis of variance. The results showed that there was no significant difference between the treatments for the observed parameters. The combination of K2D3 treatment resulted in soybean production reaching 3.2 tons / ha which was not significantly different from other treatment combinations. TThis research showed that Anjasmoro variety was able to produce 2.09 - 3.20 ton / ha, there are up to 42.2% higher than the description of the this variety, which only had a yield of 2.03-2.25 ton / ha. The results showed that the use of LOF in soybean plants could reduce the use of chemical fertilizers, thereby reducing production cost and increasing farmers’ income. In the future, processing organic waste into LOF can be used to increase land productivity, prevent land degradation, and be a solution in overcoming the problem of organic waste.