AN EXPERIMENT TO DETERMINE THE OPTIMAL VALUE OF ORGANIC FERTILIZER AND BIOCHAR TO INCREASE PRODUCTIVITY OF SHALLOTS VAR. BATU IJO

Abstract

The experiment aimed to assess the characteristics of growth and yield of shallots due to the application of organic fertilizer and biochar and to obtain an optimal dose that can give the best effect. The research began in July and continued until September 2021. It was conducted to test the use of organic fertilizer and biochar to increase shallot productivity in the field. The experiment was arranged as a factorial randomized block design with three replications. The first factor was organic fertilizers (0, 5, and 10 tons.ha^-1), while the second factor was biochar (0, 7.5, and 15 kg.ha^-1). Statistical tests used the Anova and Duncan Multiple Range Test (DMRT) at the 5% significant level. The parameters observed included the growth component and yield component of shallots, i.e., plant height, number of leaves, number of tillers, number of bulbs, weight average of bulbs, and bulbs weight per plot. The results showed that the application of organic fertilizer at a dose of 10 tons.ha^-1 and biochar at a dose of 15 kg.ha^-1 gave a better effect on plant height, number of leaves, number of tillers, number of bulbs, weight average of bulbs and bulbs weight per plot.