Optimization of Growth, Production and Seeding of Black Rice through a Combination of Compost and Liquid Fertilizer Based on Multivariate Analysis

The development of black rice requires the optimization of organic fertilizers, such as compost and liquid organic fertilizer, to support their production and seeding. In addition, the optimization of organic fertilizers also requires a systematic concept in estimating the evaluation criteria, such as multivariate analysis. Therefore, the study aims to 1) identify the criteria for practical evaluation and response patterns to compost doses and liquid organic fertilizer concentrations and 2) determine the best combination of the two treatments in supporting the growth, productivity, and seed quality of black rice. This research was designed using a split-plot design. The main plot was the dose of compost (three doses), and the subplots were liquid organic fertilizer concentrations (four concentrations) repeated three times. Based on these results, the number of tillers, flag leaf length, flag leaf width, panicle length, and yield were appropriate characters for evaluation criteria. Based on these criteria, the combination of compost doses of 6tons ha-1 and liquid organic fertilizer concentration of 60mL L-1 is the best in supporting the growth, productivity, and seeding of black rice of the Jeliteng variety. This combination is recommended for application in the production and cultivation of black rice.