Induction of off-season flowering in custard apple (Annona squamosa L.) cv. Balanagar
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Society for Promotion of Horticulture
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Pruning and defoliation are essential operations for inducing off-season flowering and fruiting to yield betterquality and quantity of fruits in custard apple. Trees were subjected to two levels of pruning (25% and 50%) combinedwith use of chemical defoliants (urea 5%, Ethrel 2000ppm, potassium iodide 1%, or ortho-phosphoric acid 1%)besides the Control, with each treatment replicated thrice. Early initiation of flowering and better vegetative growthwas seen in pruned (25%) and defoliated trees than in the Control or other treatments. Maximum off-season yield(10.33kg/ plant) was obtained in T4 (25% pruning, combined with 5% urea spray as defoliant) and T6 (25% pruning,combined with 1% potassium iodide-spray as defoliant). Findings of this investigation helped standardize pruningand defoliation practices on a scientific basis for off-season production of custard apple fruits.
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