National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Custard apple (Annona squamosa L.) is gaining popularity as dryland fruit crop in Maharashtra. But poor set is the limiting factor in the expansion of area under this crop. To circumvent this problem, the investigation was undertaken at Research Farm, Department of Horticulture, College of Agriculture, Dhule by using different growth regulators viz., NAA (15 ppm), GA (50 ppm), CPPU (1 and 2 ppm), Brassinosteroid (1 and 2 ppm), Potassium monohydrogen phosphate (0.5 and 1.0%), Potassium dihydrogen phosphate (0.5 and 1.0 %) and Boric acid (1 and 2 %). Three sprays of each treatment were given at monthly interval starting from April. The experimental results indicated that, though CPPU @ 2 ppm recorded highest number of flowers per shoot (32.83) followed by NAA @ 15 ppm (32.11 flowers per shoot), the highest fruit set (21.06%), fruit retention (70.59%), number of fruits per plant (60.0 fruits/plant) and yield (9.43 kg/plant) was registered by the spray treatment of NAA @ 15 ppm. Fruit weight and days to fruit harvesting were not influenced by the growth regulators studied. Further, it was observed that none of the growth regulators studied did not influence the physico-chemical characters of the fruit. Thus, the sprays of CPPU and NAA at flowering stage and spray of NAA from fruit set to harvest found to be beneficial in improving fruit set and fruit yield in custard apple.
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