Author(s):

Hemanshi P Purohit, Dr. AM Butani, Prof RL Chitroda and Pradip Parmar

Abstract: The objective of this study was to determine the effects of calcium nitrate, gibberellic acid and their interaction on fruiting characters of guava cv. L-49. Forty eight plants of uniform age and vigour were selected for the studies at ten year old orchard (Khengar Vav Farm, Fruit Research Station, Department of Horticulture, JAU, Junagadh) tree spaced at 6 x 6 m which are maintained under recommended schedule of fertilizer, irrigation and insect - pest control. The selected trees were pre harvest sprayed with the different concentrations calcium nitrate and gibbrellic acid at the time of fruit set and 25, 15 days before harvesting during kharif season of the year 2018-19. Guava trees were sprayed with 0, 0.5, 1.0, and 1.5% of calcium nitrate and 0, 50, 100 and 150 ppm GA₃. Generally higher concentration of calcium nitrate and medium concentration of gibberellic acid alone with T₁₅ in combination of C₃ + G₂ were found superior over all the treatments.

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