The effect application of powder active of cassava to various composted weeds in improving chemical characteristics of vertisol and yield of mung bean (Vigna radiata L.)

Abstract

Vertisol is a type of soil that is low in some nutrients such as Nitrogen, Phosphor, and Potassium. These conditions resulted low in soil availability in supporting the growth and yield of the plant. It might be improved by the application of some organic matters such as compost. However, the compositing process takes normally some matter time. It could be improved by the application of an innovation product called powder active of cassava. Research was conducted at the Central Research of Dry land the Farming System University of Nusa Cendana. The research was designed on a Completed Randomized Design with three replications. Treatment combinations were Chromolaena compost, Imperata compost, Tithonia compost, and powder active of cassava (control (0 g), 0.06g, 0.09g). Result of the research showed that all treatments affect significantly to total soil microorganism content, Nitrogen content, available Phosphor, available Potassium, and yield of mungbean. The best application treatment was application 15 g per polybag of Chromolaena compost applied by 0.09 powder active of cassava. The highest yield of mungbean applied by that treatment was 1.78 g/ plant.