ANALISA PERTUMBUHAN DAN PRODUKSI BENIH KACANG KORO PEDANG (Canavalia ensiformis L) MELALUI APLIKASI PUPUK NPK DAN PUPUK ORGANIK CAIR

Abstract

The yields of jack bean (Canavalia ensiformis L) varied from 3.9 to 4.6 t/ha, higher than that of soybean. The grain yield of jack beans was low because large number of flowers and pods fell. This research was aimed to increase the plant growth and grain yield for seed, of jack bean through NPK inorganic fertilization and liquid organic fertilizer (POC) sprays. Field research was conducted in May-October 2016 in Purwasari Village, Dramaga, Bogor, followed by seed quality testing at the seed testing laboratory at Bogor Agricultural Institute in December 2016. The treatments consisted of two-factors arranged in a randomized block design. The first factor was dose of NPK inorganic fertilizers (Urea, SP36, KCl), consisted of three levels (0 kg/ha (control), 25: 50: 56.25 kg/ ha, and 50: 100: 112.5 kg/ha). The second factor was liquid organic fertilizer (POC), consisted of two levels (0 ml and 2 ml/l water). Results showed that there was no interaction between NPK fertilizer and liquid organic fertilizer on growth, seed yield, and seed quality. NPK fertilizer alone or liquid organic fertilizer affected on the performance of variables. The highest grain yield was obtained from the treatment of 50 kg urea, 100 kg SP36 and 112.5 kg KCl/ ha, achieving 4.10 t/ha. NPK fertilizer affected the 1,000 seed weight, while application of liquid organic fertilizer did not. The largest seed size was produced from treatment of 50 kg Urea, 100 kg SP36 and 112.5 kg KCl, obtaining 1,414.5 g/1,000 seeds with seed germination of above 85%.