Efficacy of plant growth regulators on growth characters and yield attributes in brinjal (Solanum melongena L.) cv. Brinjal 3112

Abstract

The experiment was carried out during kharif season 2013, Department of Biological Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad, Uttar Pradesh.The efficacy of different Plant growth regulators and their and their combination of naphthalene acetic acid (NAA), gibberellic acid (GA3) and dichlorophenoxyacetic acid (2,4-D) spray on fruit yield and quality in brinjal and the crop selected for the experiment was one brinjal variety Brinjal 3112 with three replicants. Plants were sprayed three times at 30, 60 and 90 days after transplanting. The highest plant height, number of leaves, plant fresh weight and plant dry weight was observed and ascorbic acid estimated for GA3 @ 50 ppm. The highest number of branches, number of fruits, fresh fruit weight was observed and total soluble solid, nitrate reductase activity was recorded by the treatment combination of GA3 @ 10 ppm, NAA @ 20 ppm. The combined application of GA3, NAA and 2,4-D significantly increased vegetative growth, yield and quality of brinjal compared with control. Based on the results, it can be concluded that combined application of GA3, NAA and 2,4-D @ 10 ppm, 20 ppm and 1 ppm of 2,4-D had significantly on plant growth, flowering, quality and yield potential.