Application of Bioameliorant and Mycorrhizal Biofertilizers to Increase Growth of Maize-Soybean Intercropping in Suboptimal Land

Application of bioameliorants with various formulations can increase nutrient concentration and growth of maize-soybean intercropping. However, how much increase in nutrient concentration and growth of sandy soil rice has not been revealed. The experimental design used was a randomized block design consisting of five treatments of bioameliorant formulation, namely F0: without bioameliorant, F1: with 10% compost + 10% cattle manure + 10% rice husk charcoal + 70% mycorrhizal biofertilizer, F2: 15% bioameliorant compost+15% cattle manure 15% rice husk charcoal + 55% mycorrhizal biofertilizer, F3 : with bioameliorant 20% compost+20% cattle manure 20% rice husk charcoal + 40% mycorrhizal biofertilizer, F4 : with bioameliorant 25% compost+25% cattle manure + 25% rice husk charcoal + 25% mycorrhizal biological fertilizer. The variables observed in this study were: (1) soil nutrient concentration variables and plant nutrient uptake (N and P) at 42 days after planting, (2) growth variables included: plant height and number of leaves at 14, 28, 42 and 56 dap, and weight of wet and dry root and shoot at 42 dap, and (3) mycorrhizal population variables included: number of spores and percentage of root infection at 42 dap. The results showed that the application of bioameliorants with a formulation of 25% compost + 25% cattle manure + 25% rice husk charcoal + 25% mycorrhizal biofertilizer in maize-soybean intercropping gave the best soil nutrient concentration, N and P nutrient uptake by plants, mycorrhizal population and growth of maize-soybean intercropping.