Round the year crop regulation in guava (Psidium guajavaI L.) var. Lalit through pruning
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Date
2023-11-04
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College of Horticulture and Forestry Dr YSP UHF, Neri, Hamirpur(H.P.)
Abstract
The present study, entitled “ Round the year crop regulation in guava (Psidium guajavaI L.) var. Lalit through pruning” was undertaken in the experimental Farm of Department of Fruit Science, College of Horticulutre and Forestry, Neri, Hamirpur (H.P.) during the year 2022-2023. The Research trial was conducted on six year old guava cv. Lalit, planted at 2×2m spacing. The experiment comprises of 7 treatment viz, T1: 15th April pruning, T2:30th May pruning, T3:15th July pruning, T4:30th August pruning, T5: 15th October pruning, T6: 30th November pruning, T7: control. Each treatment was replicated thrice. All the plant were subjected to two leaf pair pruning except control where normal winter pruning was carried out on 15th November. Among different pruning treatment 30th May pruning produced best result with respect to vegetative growth characteristics i.e., minimum days to bud appear (5.25 days), bud swell (7.75 days), bud burst (10.58 days), maximum number of new shoots per branch (12.25) and maximum number of leaves per shoot (20.45). Among different pruning times, 30th May pruning was found better for improving reproductive characteristics of guava i.e., minimum time to flower bud initiation (40.32 days), 50% flower opening (59.58 days), full bloom (68.11 days), fruit set (77.64 days), minimum days from fruit set to fruit maturity (66.40 days) and maximum flower per branch (33.44). Also, maximum number of fruit per plant (81.19) and maximum yield per plant (15.12kg/plant) was recorded in plant pruned on 30th May. Among different pruning times, plants pruned on 30th May produced comparatively superior quality of fruits and was found effective in enhancing the qualitative characteristics of guava fruits i.e., maximum TSS (11.52 B), minimum titratable acidity (0.34%) and maximum total sugar (8.07%).