Verma, AnnuSingh, Santosh KumarRathiya, Pratap SinghSharma, Pravin KumarSingh, PushpendraSaxena, R.R.2021-11-272021-11-272021https://krishikosh.egranth.ac.in/handle/1/5810178373EFFECT OF PLANT GROWTH REGULATORS (GA3 AND NAA) ON GROWTH AND YIELD OF CABBAGE (Brassica oleracea var. capitata L.) IN HILLY REGIONS OF CHHATTISGARHThe current investigation entitled “Effect of plant growth regulators (GA3 and NAA) growth and yield of Cabbage (Brassica oleracea var.capitata L.) in hilly regions of Chhattisgarh.” was conducted during Rabi season 2020-21 at Potato and Temperate Fruit Research Station Mainpat, Surguja under IGKV Raipur, (C.G.). GA3 and NAA are most essential growth promoters for improving plant growth and productivity in vegetable crops. GA3 is an important growth-stimulating chemical that aids in the growth and development of many plants by promoting cell elongation and cell division. NAA has an effect on physiological processes, hastening maturity and enhancing vegetable quality.Three replications and nine treatments with absolute control were used in the RBD experiment. The treatment comprised three different concentrations GA3 and NAA at 25, 50 and 100ppm and different combination GA3, NAA and GA3 + NAA (25-25, 50-50 and 100-100 ppm) at 30, 45 and 60 DAT. The results revealed that foliar application of GA3 + NAA @ 50-50ppm were found more beneficial for vegetative characters viz., plant height, number of leaves, stalk length, length of leaves, width of leaves, stalk diameter, head diameter and yield attributes viz. head diameter, head weight (kg per plant), head yield (kg per plot) and head yield (tonne per ha). The present study demonstrates that combined effects of foliar application of plant growth regulators treatment T2 (GA3 @ 50 ppm) recorded maximum plant height (18.37 cm) at 30 DAT, while treatment T8 (GA3 + NAA @ 50-50 ppm) was recorded (30.07 and 34.73cm) maximum plant height at 45 and 60 DAT, number of leaves recorded in treatment T8 (GA3 + NAA @ 50-50 ppm) was (12.18, 14.27 and 17.80) maximum at 30, 45 and 60 DAT, stalk length (3.73cm NS, 5.23 cm and 5.83 cm ) was maximum in treatment T8 (GA3 + NAA @ 50-50ppm) at 30, 45 and 60 DAT, length of leaves at 30 DAT in treatment T7 (GA3 + NAA @ 25-25 ppm) was (14.57cm) maximum, while treatment T8 (GA3 + NAA @ 50-50ppm) was recorded (21.27 cm and 27.43cm) maximum, at 45 and 60 DAT, width of leaves at 30 and 45 DAT, in treatment T8 (GA3 + NAA @ 50-50 ppm) was (15.13 cm and 20.96 cm) maximum, while at 60 DAT the treatment T6 (NAA @ 100ppm) was (24.80 cm) maximum, stalk diameter at 30 DAT (1.36cm NS) while 45 DAT and 60 DAT (2.70 cm and 3.39cm) was maximum in treatment T8 (GA3 + NAA @ 50-50 ppm), days of harvesting in treatment T8(GA3 + NAA @ 50-50 ppm) the early harvest was done at 90 DAT while late harvest done at 100 DAT in treatment T0, head diameter at harvest in treatment T8 (GA3 + NAA @ 50-50ppm) was (49.17 cm) maximum, head weight at 95-100 DAT per plant, per plot and per hectare in treatment T8 (GA3 + NAA @ 50-50ppm) were maximum recorded 1.53kg, 19.13kg and 32.15 tonnes respectively. From the economic point of view, foliar spray of GA3 and NAA @ 50-50 ppm was found to be profitable as compared to rest of the treatments.EnglishThesis