International Journal of Farm Sciences
Year : 2016, Volume : 6, Issue : 3
First page : ( 88) Last page : ( 94)
Print ISSN : 2229-3744. Online ISSN : 2250-0499.

Effect of GA₃ and its combination with urea phosphate and BA on storage changes in grape cv Thompson Seedless

Kumar T Kranthi*, Sharma MK

Division of Fruit Science, SKUAST-Kashmir, Shalimar-190025, Srinagar, J&K

*Email forcorrespondence: kranthi.tirlangi@gmail.com

Online published on 25 July, 2018.

Abstract

Effect of GA₃ and its combination with urea phosphate and BA on storage changes in grape cv Thompson Seedless were evaluated. Ten treatments of GA₃ and its combination with urea phosphate and BA and control (water spray) were applied at two stages that were pre-bloom and berry set. All the bio-regulator and chemical treatments proved more effective in improving berry storage parameters after 7 days of ambient storage over control. The combined application of both GA₃ and BA in different concentrations (30 ppm GA₃ at pre-bloom stage with 30 ppm GA₃ + 10 ppm BA at berry set stage and 40 ppm GA₃ at pre-bloom stage with 30 ppm GA₃ + 10 ppm BA at berry set stage) proved more effective in reducing physiological loss in weight along with higher juice content after 7 days of ambient storage. The application of 40 ppm GA₃ at pre-bloom and again at berry set stage proved effective in maintaining higher TSS, TSS:acid ratio and reducing titratable acidity after 7 days of ambient storage. The study showed that the application of plant growth regulators viz GA₃ and BA and a chemical urea phosphate at pre-bloom and berry set stages influenced the storage changes after 7 days under ambient conditions.

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Keywords

Thompson Seedless, GA₃, urea phosphate, BA, storage changes.

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