Implementation of Rice, Corn, Soybean Intercropping Planting System on Acid Land Agroecosystem in Lampung Area

Abstract

The acidic wetlands of 410,177 ha in Lampung are potentialfor food crops. The main characteristic of acid land is relatively low productivity for main food crops such as rice, corn, and soybeans. A study of agricultural technology innovations application with intercropping systems of rice-corn-soybean has been carried out in Tanggamus district, Lampung. The research was in a demonstration plot of 3.0 ha. It was comparing 3 types of planting systems using intercropping of upland rice - corn, upland rice - soybean and corn - soybean. The results showedan average yield of corn of 8,089 kg/ha and soybean of 1,971 kg/ha in the intercropping system of corn and soybeans with a 2-7 pattern (Turiman Jale 2-7), corn of 12,959 kg/ha and upland riceof 2,104 kg/ha in the intercropping system of upland corn and rice with a 2-9 pattern (Turiman Jago 2-9) and upland riceof 3,175 kg/ha and soybean of 2,516 kg/ha in the intercropping system of upland rice and soybeans with a 9-5 pattern (Turiman Gole 9-5). In the future, the potential of the intercropping planting system will provide benefits of land use efficiency, harvesting of two types of commodities, added value to yield planting with the population of 150-200%, minimizing crop failure, and sustainability of farming. However, it is very necessary to consider the efficient use of water, and the calculation of the planting schedule according to the proper planting calendar.