Use of Active Powder to Improve Carrying Capacity Vertisol And Alfisol on Dry Land Farming System

摘要

Active powder is a innovation product to improve soil microbiology activity which is finally might improve the availability of soil nutrients. Research had been done to know the effect of various dosage of powder active to improve physical and chemical characteristic of vertisol and alfisol at dry land farming system in Kupang, Nusa Tenggara Timur. The research was a factorial research designed as Randomized Completed Block Design replicated 4 times. Variables of the research were two type of soil (vertisol and alfisol) and various dosage of active powder (0, 100, 200, and 300 g/ha). Parameters observed were analyzed by Analysis of Variant and followed by Least Significant Different Test at 0.05 level Results of the research show ed that dosage active powder of 300 g/ha were able to improve number colony of soil bacteria, improve in soil porosity, soil bulk density, total N, availability of P, and availability of K. Generally, physical and chemical characteristic of vertisol improved greatly than alfisol. Yield of mungbean was significantly affected by dosage application of powder active by 200-300 g/ha in which yield of mungbean grown at vertisol was higher than yield of mungbean grown at alfisol.