Vol. 11, Issue 2 (2022)

Author(s):
T Lanuchila and Deepanshu

Abstract:
The experiment entitled “Effect of Plant Growth Regulators (Gibberellic acid, Naphthalene acetic acid) and Brassinosteroids on Flowering, Fruit set and Yield in Guava (Psidium guajava cv. Allahabad Safeda) was carried out at Guava Orchard, Horticulture Research Farm, Department of Horticulture, SHUATS, Prayagraj during the year 2020-2021. The experiment was laid out in Randomized Block Design with 10 treatments. Three growth regulators (Gibberellic Acid, Naphthalene Acetic Acid and Brassinosteroids) were applied through foliar spray during research work on Guava (Psidium guava cv. Allahabad Safeda). The study revealed that all the characters were significantly affected by the application of the treatments. On the basis of present investigation, it is concluded that the application of T₃ (Brassinosteroids @600ppm) treatment was found best in terms of flowering, fruit set and yield viz., plant height (6.40), number of primary branches (8.31), plant spread (6.93 & 6.46), days required for flowering (31.59), days required from flower to fruit set (31.08), days required from fruit set to maturity (124.2), number of flowers per plant (183.75), number of fruits per plant (165.94), fruit weight (114.92), fruit yield (18.58), fruit polar and radial diameter (8.63 & 8.71), number of seeds (318.85), pulp weight (106.58), seed weight(8.77), fruit setting % (92.04),TSS(10.24),Ascorbic acid(204.96), acidity(0.41), in guava. It is concluded that application of treatment T₃ Brassinosteroids@600ppm has given the best result as compared to other treatments in guava. Therefore, application of Brassinosteroids@600ppm will provide better flowering, fruit set and yield.