SIFAT-SIFAT KIMIA TANAH DAN KERAGAAN TANAMAN PADI DI TANAH GAMBUT YANG DIAPLIKASI DENGAN PUPUK NPK-ORGANIK DAN EXCELZYME

Abstract

Peatlands are considered marginal lands due to their limited mineral resources and high lignocellulose content, which result in less fertile soil and slow decomposition processes. The application of NPK-organic fertilizer is expected to enhance peat fertility, while the addition of excelzyme aims to accelerate the decomposition of lignocellulose. This research aimed to identify the best combination of NPK-organic and Excelzyme doses for improving soil chemical properties and the agronomic performance of rice. The study was conducted from February to May 2023 at the Wire House, Faculty of Agriculture, University of Bengkulu, using a two-factor Completely Randomized Design (CRD). Factor I was the dose of Organic NPK: P1 = 80 g/polybag, P2 = 100 g/polybag, and P3 = 120 g/polybag. Factor II was the dose of Excelzyme: E0 = 0 mL/polybag, E1 = 250 mL/polybag, and E2 = 500 mL/polybag. Each treatment was repeated three times, resulting in 27 experimental units, with each unit comprising 2 polybags, resulting in 54 polybags. The research results indicate that the application of a combination of organic NPK fertilizer and Excelzyme has no effect on the agronomic performance of rice in peat soil. There is no interaction between the doses of organic NPK and the concentration of Excelzyme on the chemical properties of the soil and the agronomic performance of rice in peat soil. High lignocellulose content is followed by poor agronomic performance. This shows that peat with high lignocellulose content (usually undeveloped peat) does not support good growth and yield of rice.