Effect of foliar application of plant growth regulators on yield and yield attributes of okra in western arid region of Rajasthan

Abstract

A field experiment was carried out to evaluate the effects of BAP (6-benzylaminopurine), GA3 (Gibberellic Acid) and NAA (Naphthalene acetic acid) on yield and yield attributes of okra (Abelmoschus esculentus L. Moench) cv. Arka Anamikaat the Instructional farm, Agricultural Research Station, Jodhpur Rajasthan during kharif, 2020. Three treatments each of BAP @ T1-25, T2-50, and T3-75 (ppm), GA3 @ T4-25, T5-50, and T6-75 (ppm) and NAA @ T7-25, T8-50, and T9-75 (ppm) were used besides controls i.e. T0 with water spray. These three growth regulators were found to enhanced early fruiting and yield. Other yield parameters were also found to be increased by treatments with plant growth regulators in okra. Among the yield parameters, earliest (46.60 DAS) fruit picking, Broadest fruit diameter (1.72 cm), heaviest fruit weight (14.9 g), maximum number of fruits per plant (27.38), maximum number of marketable fruits per plant (25.70), highest fruit yield per plant and estimated fruit yield per hectare (369.65 g and 13.21 t/ha, respectively) were recorded with NAA @ 75 ppm. The fruit length (11.67 cm) observed with GA3@ 75 ppm was significantly higher as compared to control and rest of the treatments.