Response of Foliar Application of Plant Hormones and Nutrients to Enhance the Fruit Set in Jamun cv. Konkan Bahadoli

Background: Fruit production is primarily influenced by the percentage of flowering and fruit set; flower and fruit drop are significant factors contributing to reduced production and productivity in numerous fruit crops. Thoughjamun,till recently, was categorized as an underutilized fruit, but due to growing health concerns, jamun was drawn to the limelight because of its nutritional and economic value. Hence, to increase profitability from the cultivation of Jamun, it’s important to enhance fruit set in Jamun. Methods: The present investigation on foliar sprays to enhance fruit set was conducted at the College of Horticulture, Bengaluru, for two consecutive years, 2022-2023 and 2023-2024. The experiment was conducted on Jamun cv. Konkan Bahadoli by spraying two plant hormones GA3 (50 and 100 ppm) and NAA (100 and 200 ppm) and three nutrients, namely KNO3 (0.5 and 1%), Urea (7.5 and 10%) and micronutrients (mango special at 0.5 per cent). Result: The results indicated that the maximum number of flowers per panicle had been observed in treatment T3: NAA at 100 ppm (39.91), while the highest percentage of fruit set occurred in treatment T5: KNO3 at 0.5% (65.87%), which was comparable to T6 (64.33%). The control treatment T10 exhibited the lowest fruit set at 47.87%. The number of fruits per panicle (15.50) and yield per tree (8.20 kg) had been maximized in T5: KNO3 at 0.5%, comparable to T6 (KNO3 at 1%), whereas the control treatment exhibited the lowest values.