Effect of Different Levels and Time of Application of Paclobutrazol on Morphology, Yield and Yield Attributing Characters and Economics of Groundnut (Arachis hypogaea L.)

Abstract

Background: Groundnut is one of the most important oilseed crops of Odisha and grown in both in kharif and rabi-summer seasons. Because of excessive vegetative growth in kharif season, the yield potential is lower than rabi-summer resulting in low yield. Keeping this in view, an experiment was set up to investigate the effect of different concentration and time of paclobutrazol application on growth and yield of groundnut.Methods: A field experiment was conducted during kharif 2016 to 2018 at AICRP on Groundnut Research Farm, OUAT, Bhubaneswar, Odisha. The experiment was laid out in split plot design with different concentration of paclobutrazol in main plot and time of application in sub plot and replicated thrice. Recommended dose of 20:40:40 kg of N, P2O5 and K2O entirely applied as basal. Yield and yield attributing characters were taken at the time of harvest.Conclusion: Application of paclobutrazol at different concentration significantly reduced groundnut plant height and significant reduction was observed with application at 30 DAE. Among various yield attributing characters; pod/plant and pod yield increased significantly (24.6% and 27.4%, respectively) with application of paclobutrazol @ 100 ppm with higher benefit cost ratio of 1.97 and upto (8.4% and 17.5%) with application at 30 DAE.

Productivity and Econometric Analysis of Leguminous Monkey-nut (Arachis hypogaea L.) as Influenced by Growth Retardant

“…In terms of the timing of spraying, the treatment involving double spraying at 30 and 50 DAE recorded the highest values for branches plant -1 (4.8) and root dry weight plant -1 (3.35), followed by single spraying at 50 DAE (4.5 branches and 3.14 g root dry weight plant -1 ). These findings are in line with the results reported by Lenka et al (2023). The application of paclobutrazol may have contributed to increased root activity, resulting in enhanced root growth and vigor.…”

“…This remarkable crop ranks among the most important oilseed crops, boasting an oil content ranging from 44% to 56% and a protein content of 22% to 30% on a dry seed basis. In India, groundnut takes the lead in both production and cultivation area, claiming approximately 45% of the total oilseed area and contributing to 55% of the total oilseed production (Lenka et al, 2023).…”