The early heading growth stage of rice plants in using the SRI method by giving liquid organic fertilizer of coconut husk and banana stems

Abstract

Coconut husk and banana stem waste can be used as a source of organic material for plants which is utilized in the form of liquid organic fertilizer. This study aims to determine the interaction between types of liquid organic fertilizer and the concentration of liquid organic fertilizer. This research was carried out in Sungai Bangek, Balai Gadang Village, Koto Tangah District, Padang City from June until September 2022. The design used was a split plot in a randomized block design. The main plot is liquid organic fertilizer with 2 levels of coconut husk and banana stem while the subplot is liquid organic fertilizer concentration consisting of 7 levels (0, 50, 100, 150, 200, 250, 300 ml/liter). The data were analyzed through variance analysis using the F test and if significant, it was continued with Duncan New Multiple Range Test (DNMRT) with a significance level of 5%. The data is processed with Stat8 software. The observed variables consisted of plant height, the number of tillers, leaf area index, relative growth rate, and net assimilation rate. The results obtained on the growth variable have not shown significant results in every observed observation. There was a very strong correlation between the number of tillers and the leaf area index which had a unidirectional relationship. There was a fairly strong correlation between the leaf area index and net assimilation rate which has an opposite relationship.