GROWTH AND YIELD PERFORMANCE OF YARD LONG BEAN (Vigna unguiculata var. sesquipedalis) INFLUENCED BY NUTRIENT MANAGEMENT AND AUXIN

Abstract

The field experiment was conducted at the Horticultural Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from March, 2019 to July, 2019 to study the effects of different levels of nutrient management and growth regulator Auxin on the growth and yield of Yard long bean. The experiment consisted of two factors. Factor A: four levels of nutrient management; i) N 0 : control (N 0 , P 0 , K 0 ) Kg/ha ; ii) N 1 : (N 12 P 18 ii K 22 )

Kg/ha; iii) N 2 ) Kg/ha; iv) N 3 : (N 24 P 36 K 44 ) Kg/ha. Factor B: three levels of Auxin (Indole acetic acid); i) I 0 : control (0 ppm); ii) I 1 : 20 ppm iii) I 2 : 40 ppm. The variety of Yard long bean was taken BARI borboti-1. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The results revealed that nutrient management and auxin had significant effect on the plant height, number of leaf, number of branch, number of flower, number of pod per plant, pod yield per hectare. In case of Nutrient management, highest yield (14.5 t/ha) was observed in N 2 treatment and lowest yield (9.61 t/ha) was observed in N 0 treatment . For auxin, the highest yield (12.57 t/ha) was observed from I 2 treatment and the lowest yield (9.83 t/ha) was observed from control treatment I 0 . For combined effect, N 2 I 2 treatment combination gave the highest yield (16.64 t/ha) and lowest yield (6.37 t/ha) was obtained from N 0 combination treatment. So, from the result, it may be concluded that application of 18 kg N/ha, 27 kg P/ha and 33 kg K/ha with 40 ppm auxin is the best for growth and higher yield of Yard long bean.