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Singh Madhvendra Bahadur, Kumar Pawan, Kundu Manoj, Sengupta Samik, Kuldeep
Keywords:
Cape gooseberry, Gibberellins, Fruit quality, Yield, Physiological growth
Present experiment was conducted to optimize the actual time of gibberellins spray in cape gooseberry (Physalis peruviana L.) for improving growth, yield and fruit quality attributes. Vegetative and physiological growth of the experimental plants improved significantly by three repeated GA3 application (100 ppm each) at vegetative, flowering and fruit setting stage. However, three application of 25 ppm GA3produced maximum number of flowers and fruits plant− 1 (197.67 and 85.67, respectively). Further, three applications of 25 ppm GA3 each also increased the fruit yield at maximum level (858.38 g plant− 1) with statistically non-significant variation in three application of GA3 at 50–100 ppm each (806.23–856.07 g plant− 1). In addition, foliar spray of GA3 at any concentration (25–100 ppm) increased the TSS: acid ratio significantly as compared to respective control. Total sugar content was estimated maximum (11.55%) under three GA3 spray at 75 ppm each which was statistically at par with its application during all the three growth stages with 100 ppm (11.26%), 50 ppm (11.18%) or 25 ppm (11.10%). Similarly, application of GA3 at 25–100 ppm each at all the three growth stages increased the ascorbic acid and total phenol content of ripe cape gooseberry fruits to its maximum level with non-significant differences. Hence, it can be concluded that the split application of 25 ppm GA3 each at vegetative, flowering and again at fruit setting stage is optimum for improving the yield of better quality cape gooseberry fruit significantly under subtropical climate.
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Authors are heartily thankful to Hon’ble Vice Chancellor, Bihar Agricultural University (BAU), Sabour, Bhagalpur, India, for providing all the necessary facilities; Director of Research, BAU, Sabour for his continuous support and valuable suggestions. Further, the financial support from PG Research Contingency, BAU, Sabour, Bhagalpur, Bihar, India is thankfully acknowledged.