Study was conducted in Jambegede Research Station (Malang) from February to May
2014. The type of soil was Entisol Association and Inceptisol, elevation 335 m above sea level,
and C3 of Oldeman climate type. The research materials consist of 150 soybean genotypes and
using completely block design with two replicates. Grobogan, Anjasmoro, and Argomulyo used
as check varieties. Each genotype was planted in 1.2 m x 4.5 m plot size with 40 cm x 15 cm
planting distance, two plant/hill. Pests and diseases were controlled optimally. Drainage was
applied to maintain optimum soil moisture. Fertilization with 250 kg Phonska/ha + 100 kg SP 36
and 1 t/ha organic fertilizer at planting time.