Studies on regulation of vegetative growth, flowering and fruit drop in mango (Mangifera indica L.) cv. Alphonso.
Kulkarni P. B.
Author Affiliation: University of Agricultural Sciences, Dharwad, India.
Thesis Abstracts, Haryana Agricultural University 9 : 344-345
Abstract : Defoliation of shoots immediately after harvest did not promote new growth immediately but only later, coinciding with the normal flushing period (October). The defoliated shoots failed to produce flower panicles in the following season. Defoliation and deblossoming promoted vegetative growth in March in 60% of treated shoots; treated shoots which did not produce vegetative growth developed flower panicles. Maximum flowering occurred on shoots which did not produce vegetative growth but were sprayed with a 2% urea/sucrose solution. Pruning of flowering shoots in February resulted in immediate production of vegetative growth but these shoots failed to flower in the following season. Stimulation of flowering with several growth regulators is also discussed. Application of 2,4-D at 25 p.p.m. to half-grown fruits appreciably reduced fruit drop.