GROWTH, YIELD AND QUALITY OF GARDEN PEA AS INFLUENCED BY PLANT GROWTH HORMONE AT DIFFERENT GROWTH STAGES

Abstract

The experiment was conducted in the research farm of Horticulture Department and Laboratory of Agricultural Chemistry, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh, during the period November, 2016 to March, 2017 to find out the performance of garden pea under different concentration of NAA as plant at different stages of leaf. The experiment consisted of two factors: Factor A: Four different growth stages of garden pea viz. L1: Two leaf stage, L2: Four leaf stage, L3: Six leaf stage and L4: Full blooming stage. Factor B: Four levels of NAA viz. H0: 0 ppm of NAA (control), H1: 25 ppm, H2: 50 ppm and H3: 75 ppm. Vegetative growth, yield, yield contributing characteristics, and quality parameters were studied in this experiment. Due to the leaf growth stages, the longest plant height (90.00 cm at 60 DAP), maximum number of pod plant-1 (9.35) and highest yield of pod ha-1(22.41 t ha-1) and yield contributing characters was recorded from the treatment of Six leaf stage that is (L3). From the experiment it was also revealed that, the longest plant height (114.04 cm at 60 DAP), the maximum number of pod plant-1 (11.49) and highest pod yield (22.10 t ha-1) and other yield contributing parameters were recorded form 75 ppm NAA (H3). Due to the leaf growth stages, highest amount of Vitamin-C content (25.45 mg/ 100 g), highest amount of potassium content (239.21 mg/ 100 g) and maximum percentage of protein content (8.98%) were recorded from the treatment of Six leaf stage that is (L3). For the application of NAA, the highest amount of Vitamin-C content (27.64 mg/ 100 g), highest amount of Potassium content (237.44 mg/ 100 g) and maximum percentage of protein content (9.88%) were recorded from the treatment of 75 ppm NAA (H3). The treatment combination of L3H3 performs the highest pod yield (24.09 t ha-1). So, growth of the six leaf stage + 75 ppm NAA is the suitable combination for the highest yield of garden pea cv. BARI Motorshuti-2.