Respon Pertumbuhan, Produksi dan Kualitas Hasil Dua Varietas Kedelai Hitam (Glycine max (L.) Merr) pada Berbagai Tingkat Pemupukan P

Abstract

The research was conducted to evalute the response of growth, quality and production of two varieties of black soybean (Glycine max (L.) Merr) which treated with Various Dosage of Phosphor Fertilizer. This research used split plot design. The main plot were 0, 75, 150, 225 and 300 kg SP-36/ha. The sub plot were varieties of Detam 2 and Mallika. The research was conducted in the village dry land subdistrict Panti Gemi, Stabat District. Langkat, North Sumatra province with a height of ± 30 meters dpl. The research was conducted from April to July 2015. The results showed that phosphor fertilizier up to 300 kg SP - 36/ha applicated to black soybean plants can accelerate age of flower and protein content. The treatmen of phosphor fertilizier was not improve production. Varieties Mallika showed the highest influence on of plant height, accelerate age of flower while Detam 2 varieties showed the highest influence on and of the dry weight of the plant, plant P uptake and protein content. The best intraction effect of phosphor fertilizier and varieties was SP-36 75 kg/ha and black soybean varieties of Detam 2 that treatment can increase the weight of 100 grains. The best intraction effect of phosphor fertilizier and varieties was SP-36 300 kg/ha and black soybean varieties of Detam 2, that treatment can increase the weight of protein content.