The Implications of Growth-Regulating Substances on Growth and Yield Traits of Cauliflower

Background: Present investigation was carried out to evaluate the performance of the different levels of GA3 and NAA as foliar spray on growth and yield attributes of cauliflower cv. Pusa Snowball KT-25 at Vegetable Research Farm, Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat.Methods: The experiment was framed in Randomized Block Design with three replications, which included nine treatments.Results: The results revealed that the application of GA3 @ 150 mg l-1 (T5) recorded higher values for growth character viz., plant height (69.26 cm), number of leaves plant-1 (29.67), length of stalk (6.54 cm) as well as plant spread in N-S (69.48 cm) and E-W (71.70 cm). In case of yield attributes, the same treatment GA3 @ 150 mg l-1 (T5) at 40 and 60 DATP exhibited maximum curd diameter (17.80 cm), gross weight of curd (2.88 kg plant-1), net weight of curd (789.59 g plant-1), yield plot-1 (20.23 kg) and yield hectare-1 (31.22 t) followed by NAA @ 80 mg l-1 (T7). Whereas, days to 50 % curd initiation and days to first marketable curd did not show any significant differences.