Effect of foliar sprays of nitrogen and growth regulators on the flowering and fruiting of mango (Mangifera indica L.).
Singh A. R.
Author Affiliation: Banaras Hindu University, Varanasi, India.
Punjab Horticultural Journal 17 : 34-40
Abstract : In a 2-year trial with mangoes, cv. Dusehri, foliar sprays of urea at 0, 2 or 4% were applied in December and the following March, and also 2,4,5-T, NAA or 2,4-D, each at 0, 20 or 40 p.p.m. in November, March and May. The duration of flowering was shortened by all treatments, the minimum period (37 days compared with 50 days for the controls) being obtained with urea and 2,4,5-T at the higher concentrations. Fruit set was markedly increased by urea and all growth substances except 2,4-D at the highest concentration, the best results being obtained with urea and NAA at the higher concentrations. Fruit retention, assessed in April, May and June, was also enhanced by most treatments, urea and 2,4-D at the higher concentrations giving the best results and the highest yields. Data are also presented on the effects on the ratios of vegetative to floral buds and of the numbers of staminate to hermaphrodite flowers.