Quality of Taro Leaf Compost Produced Using Various Dosages of Trichoderma harzianum Biostarter and Its Application on Sweet Corn
DOI:
https://doi.org/10.64570/agrivolution.v2i1.62Keywords:
Biostarter, compost, decomposer, sweet corn, Trichoderma harzianumAbstract
Taro leaves and petioles (Colocasia esculenta) are abundant agricultural wastes that have not been fully utilized as compost. This study aimed to determine the effects of Trichoderma harzianum biostarter doses on the quality of taro leaf compost and on the growth and yield of sweet corn (Zea mays var. saccharata Sturt.). The study was conducted from December 2025 to May 2026 in Tanjung Pati, Lima Puluh Kota Regency, West Sumatra, Indonesia. A Randomized Complete Block Design was used in the plant experiment, with five doses of T. harzianum (K1=0.5%; K2=1.0%; K3=1.5%; K4=2.0%; K5=2.5%) and five replications. The data were analyzed using analysis of variance at a 5% significance level. All treatments produced compost with quality that met the requirements of SNI 7763:2024, with N content ranging from 1.88–2.74%, P from 1.58–1.86%, K from 2.75–4.30%, C/N ratio from 9.05–13.01, pH from 6.93–8.01, and moisture content from 9.88–12.64%. The application of taro leaf compost produced at different doses of T. harzianum biostarter had no significant effect on any vegetative or generative growth variables of sweet corn under the conditions of the study. The yield of sweet corn with husks ranged from 22.04–24.49 tons/ha, exceeding the reported yield potential range for the variety (9.4–18.4 tons/ha). The results showed that different doses of T. harzianum, under the conditions tested, produced compost that met the required quality standards but did not significantly affect sweet corn growth and yield.
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