Effect of Gibberellic Acid and Naphthalene Acetic Acid on Growth, Yield and Quality of Chilli (Capsicum annum L.)

Abstract

The experiment entitled "Effect of gibberellic acid and naphthalene acetic acid on growth yield and quality of chilli (Capsicum annum L.)” was conducted at Department of Horticulture, Naini Agricultural Institute, SHUATS, Prayagraj during August to December, 2021. Experiment was laid out in Factorial Randomized Block Design with three replications and ten treatment combinations. The experiment consisted of two factors. Factor A: Variety (two variety) as TMPH-449, TMPH-443 and Factor B: Plant growth regulator T1: NAA (30ppm) T2: NAA (40ppm) T3: GA3 (50ppm) T4: GA3 (100ppm). The results revealed that among the varieties studied, variety TMPH-449 resulted better in vegetative growth (Plant height, leaf area) whereas variety TMPH-443 resulted better in vegetative growth (Number of branches per plant), yield parameter (Minimum days taken for 50 percent flowering, minimum days to first harvest, length of fruit, fruit girth, weight of fruit, number of chilli fruit per plant, average fruit yield per plant, fruit yield per hectare), and quality parameter (total soluble solids). Among different concentrations of growth regulator application T2: NAA (40ppm) gave better result in vegetative growth (Plant height, Number of branches per plan, leaf area), yield parameter (Minimum days taken for 50 percent flowering, minimum days to first harvest, length of fruit, fruit girth, weight of fruit, number of chilli fruit per plant, average fruit yield per plant, fruit yield per hectare), and quality parameter (total soluble solids). The best interaction amount different variety and growth regulators were found to be variety TMPH-443 and Growth regulator T2: NAA (40ppm) which give maximum growth and quality characteristics of chilli.