Effect of plant bioregulators on vegetative growth parameters of okra (Abelmoschus esculentus L. moench) cv. Arka Anamika

A field experiment was conducted during the year 2019 on okra cv. Arka Anamika to ascertain the effect of different plant bioregulators on growth and yield parameters. The field experiment was carried out at Horticulture Research Farm, Department of Horticulture, Chaudhary Charan Singh University, Campus, Meerut, Uttar Pradesh, India.The experimental field was laid out in randomized block design (RBD) and replicated three times. The treatments involved in the study were ten in numbers viz. T₁ Control (distilled water), T₂ (NAA @ 50 ppm), T₃ (NAA @ 100 ppm), T₄ (NAA @ 150 ppm), T₅ (IAA @ 50 ppm), T₆(IAA @ 100 ppm), T₇(IAA @ 150 ppm), T₈(GA₃ @ 50 ppm), T₉(GA₃ @ 100 ppm) and T₁₀(GA₃ @ 150 ppm). All variables parameters regarding growth attributes weresignificantly influenced by foliar application of different plant bioregulators. Results revealed that among all the treatments, the foliar application of GA₃ @ 150 ppm gave the better effect on vegetative parameters viz. plant height (146.56 cm), leaf length (16.90 cm), leaf width (17.10 cm), root length (31.66 cm), number of leaves per plant (28.46), number of branches per plant (4.80), number of nodes main stem per plant (31.30), fresh weight of plant (342.33 g), dry weight of plant (100.33 g), fruit yield (159.11q/ha) as compared to other treatments.However, maximum root length (31.66 cm) was recorded under the foliar application of IAA @ 150 ppm.