Author(s):

Deen Dayal Singh, RR Singh and Pankaj Kumar Ray

Abstract: The experiment was carried out in Horticulture Garden of Bihar Agricultural College, Sabour during Rabi season with the objectives focused in this direction on the effect of GA₃ application on physiological regulation of flowering and maturity in mango [Mangifera indica L.] cv. Langra. A critical analysis of data revealed that wide range of observation was observed on fruit set percentage (17.98%) was recorded with gibberellic acid @ 50 ppm within pea stage and fruit retention percentage (0.67%) and fruit drop percentage (99.01%) was recorded with gibberellic acid @ 0 ppm within stone formation stage. The other traits like yield (288.73 Kg/ plant) and length of fruit (97.47 mm) were recorded with spray of gibberellic acid @ 100 ppm respectively. The other traits like pulp weight (210.00 g), edible: non edible ratio (2.69) and Pulp and stone ratio (6.11) was recorded with gibberellic acid @ 50 ppm; however, maximum stone weight (37.95 g) and peal weight (59.91 g) was recorded at the time of 20 days before expected harvest stage.

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