The Application of Several Bioameliorant Formulations to Increase Soil Nutrient Concentration and Yields Maize-Soybeans Intercropping Flexible to Climate Change in Suboptimal Land North Lombok, Indonesia
Wahyu Astiko1, Ni Made Laksmi Ernawati1 and I Putu Silawibawa2

1 Agroecotechnology Study Program, Faculty of Agriculture University of Mataram, Indonesia
2 Department of Soil Science Faculty of Agriculture, University of Mataram, Indonesia

Abstract

Many maize and soybean plants are planted with an intercropping system on suboptimal land in North Lombok. However, this plant is sensitive to climate change, drought stress, and soil fertility. This study is aimed to determine the increased soil nutrient concentrations and yields in several applications of bioameliorant in maize and soybean intercropping in the suboptimal land of North Lombok. A field experiment was conducted with five different formulations bioameliorant applied, i.e., without bioameliorant (F0 Control), bioameliorant 10% compost + 10% catlle manure 10% rice charcoal husk + 70% mycorrhizal biofertilizer (F1), bioameliorant 15% compost + 15% cattle manure 15% rice husk charcoal + 55% mycorrhiza biofertilizer (F2), bioameliorant 20% compost + 20% cattle manure 20% rice husk charcoal + 40% mycorrhiza biofertilizer (F3), bioameliorant 25% compost + 25% catlle manure 25% rice husk charcoal + 25% mycorrhizal biofertilizer (F4). The application bioameliorant which contains a lot of organic matter can increase the availability of nutrients for plants, yield, and development of mycorrhiza in the soil. The results showed that the application of bioameliorant with the formulation of 25% compost + 25% cattle manure 25% rice charcoal husk + 25% mycorrhizal biofertilizer in maize-soybean intercropping increased the concentration of N, P, K nutrients and soil organic matter content, increased plant nutrient uptake (N, P, K and Ca), yield and increase the development of mycorrhizae in the soil. The study suggests bioameliorant formulation of 25% compost + 25% cattle manure 25% rice husk charcoal + 25% mycorrhizal biofertilizer is the best formulation to increase soil fertility, yields, and mycorrhizal development in suboptimal land.

Keywords: Bioameliorant, formulation, maize-soybean intercropping

Topic: Agriculture Productivity