Vol. 11, Issue 11 (2022)

Author(s):
Abhay Bisen

Abstract:
Plant growth substances play a significant role in many physiological phenomena for improving the flowering, fruiting and yield behavior of fruit plants. The experiment was conducted at the Dry Land Horticulture Farm Surgi, SKS College of Agriculture & Research Station, Rajnandgaon on three years old ber plants cv. Apple ber during the year 2019-20. The growth promoting substances i.e. NAA, GA3, 2, 4-D, Urea and Humic acid were used. The experiment was laid on Randomized Block Design with 16 treatments which were replicated three times and each treatment contains ten plants. The treatments were assigned randomly on each replication. The treatments namely Control (T0), Urea 1% (T1), Urea 2% (T2), Urea 3% (T3), GA3 10 ppm (T4), GA3 25ppm (T5), GA3 40ppm (T6), NAA 10 ppm (T7), NAA 30ppm (T8), NAA 50ppm (T9), 2,4-D 5ppm (T10), 2,4-D 10ppm (T11), 2,4-D 15ppm (T12), Humic acid 1% (T13), Humic acid 1.5% (T14), Humic acid 2% (T15) were tested. The application of growth promoting substances were done in morning at the stage of flowering (September, 2019) and fruit development i.e. mustard stage (October, 2019) and marble stage (November, 2019) of fruit. The result revealed that maximum initial fruit set (3711), fruit retention (24.92%) and minimum fruit drop (75.07%) were recorded with NAA 50 ppm. Highest fruit yield (37.62kg/ Plant) produced with 40ppm GA3 over control (8.35 kg/Plant).