THE GROWTH AND YIELD OF UPLAND RICE (Oryza sativa L.) WHICH APPLIED BY RICE HUSK ZEOLITE AND K FERTILIZER

Abstract

The productivity of upland rice on sub-optimal land such as Podzolic is low. Increasing rice productivity can be attempted, for example through the application of rice husk zeolite and K fertilizer. This research aims to study the interaction of rice husk zeolite with K fertilizer on the growth and yield of upland rice (Oryza sativa L.) on Podzolic medium. The research was conducted at the laboratory of Soil and Greenhouse Laboratory, Faculty of Agriculture, Universitas Riau from June to October 2022. The research was conducted experimentally in a factorial form using a completely randomized design (CRD). The first factor was rice husk zeolite consisting of 3 levels (0, 200 and 400 kg.ha^-1) and the second factor was K fertilizer consisting of 3 levels (0, 50 and 100 kg.K₂O.ha^-1), each interaction repeated three times. The results showed that the interaction of rice husk zeolite at a dose of 200 kg.ha^-1 with K fertilizer at a dose of 50 kg K₂O.ha^-1 increased the number of healthy grain per panicle by 21%, the proportion of healthy grain by 14% and the weight of dry milled grain by 32.25% compared to without rice husk zeolite and K fertilizer.