The Effect of NPK Petro Ningrat and Phonska Oca Fertilizer Doses on Growth and Yield of Yard Long Bean Plants (Vigna Sinensis L.)

The inaccurate fertilization dosage caused a decline in the yield of yard-long bean crops in Bali Province. This study aimed to determine the dosage of NPK Petro Ningrat fertilizer, Phonska Oca fertilizer, and the interaction between NPK Petro Ningrat and Phonska Oca fertilizers on the growth and yield of yard-long bean plants. The research used a Factorial Randomized Complete Block Design (RCBD) consisting of two factors: the dosage of NPK Petro Ningrat and the dosage of Phonska Oca. The NPK Petro Ningrat dosage consisted of four levels: N0: 0 kg/ha (control); N1: 150 kg/ha; N2: 300 kg/ha; and N3: 450 kg/ha. The Phonska Oca dosage consisted of three levels: P0: 0 ml/l water (control); P1: 10 ml/l water; and P2: 20 ml/l water. The observed parameters included plant height, number of leaves, fresh biomass, dry biomass, fresh pods, and dry pods. The results of the study showed that fertilization with NPK Petro Ningrat at a dosage of 450 kg/ha resulted in the best plant growth and yield.