Adaptation test of shade-tolerant soybean to fertilization technology in coconut plantations, Aceh Province

Soybean is an important commodity needed by people in Indonesian. Soybean production is currently decreasing every year because off decreasing land area. The available land in Indonesia is mostly used by farmers to cultivate crops that have the potential to meet their economic needs, so that very few farmers use their land for soybean crops. This study aimed to determine the adaptation of shade-tolerant soybean varieties to fertilization technology at various levels of shade coconut plant. The research was conducted at Bandar Baru District, Pidie Jaya Regency, Aceh Province on July to October 2019, with split plot design. The main plot is shade (N), namely N1: 0% shade (without shade); N2: 25% shade and N3: 50% shade, and subplot is the fertilizer package (P) namely P1: recommendation (NPK 150 kg ha-1, organic fertilizer 2 t ha-1); P2: specific location (urea 75 kg ha-1, SP-36 100 kg ha-1, KCl 100 kg ha-1). The results showed that the level of shade had no effect on soybean production, while the fertilization factor showed that the highest production was found in the recommended fertilizer package 1.82 t ha-1, different with the specific location fertilizer package.