Effect of growth substances and calcium compounds on fruit retention, growth and yield of Amrapali mango.
Ruby Rani, Brahmachari V. S.
Author Affiliation: Department of Horticulture, Bihar Agricultural College, Sabour, Bhagalpur 813 210, India.
Orissa Journal of Horticulture 32 : 15-18
Abstract : The efficacy of pre-harvest sprays of 2,4,5-T (50 and 100 ppm), GA3 [gibberellic acid] (100 and 200 ppm), CCC [chlormequat] (500 ad 1000 ppm), Ca(NO3)2 (1 and 2%) and CaCl2 (1 and 2%) on fruit retention, growth, yield and quality of mango (cv. Amrapali) was evaluated in Sabour, Bihar, India, during 1998 and 1999. Fruits sprayed with GA3 (100 ppm) and CCC (500 ppm) had the highest number of fruits. Plants treated with GA3 (200 ppm) produced fruits of the greatest length, diameter, volume and weight. However, the highest yield was obtained with GA3 at 100 ppm. Spraying of GA3 at 200 ppm, Ca (No3)2 at 2%, and CCC at 500 ppm were also promising in terms of yield. The greatest pulp weight per fruit was recorded for GA3 at 100 ppm. The edible/non-edible ratio was highest with GA3 at 200 ppm.