Studies on physiological fruit drop in ber
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Date
2009
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Punjab Agricultural University, Ludhiana
Abstract
The investigation on “Studies on physiological fruit drop in ber” was carried out at New Orchard, Department of Horticulture, Punjab Agricultural University, Ludhiana during the year 2008-09. The trees were sprayed in October and November with NAA (10, 20, 30, 40 and 50 ppm), GA3 (10, 20, 30, 40 and 50 ppm) and no spray (control). The lowest fruit drop of 74.85 per cent was recorded with GA3 30 ppm and 79.41 per cent with NAA 30 ppm. While recording the fruit drop periodically from December 31 to March 19, it was found that maximum fruit drop occurred on December 31 due to shriveling of fruits at early stage of fruit development. From December onwards upto March, the per cent fruit drop decreased. Higher fruit size in terms of length, breadth and weight was noted with GA3 30-40 ppm and NAA 10 ppm. While, the maximum fruit yield was registered with NAA 30 ppm and GA3 30 ppm. Palatability rating was found maximum in fruits treated with NAA 50 ppm and GA3 30 ppm and the fruits were rated as ‘very much desirable’. Higher total soluble solids content and vitamin-C with corresponding lowest acidity was recorded in fruits from the trees sprayed with NAA 50 ppm and GA3 30 ppm.
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