Effect of plant bio regulators (PBRs) on flowering, fruit yield and quality in mango cv. Dashehari.
Singh N. P., Malhi C. S., Sharma R. C.
Author Affiliation: Punjab Agricultural University, Fruit Research Station (Gangian), Hoshiarpur - 144 205, Punjab, India.
Horticultural Journal 18 : 10-12
Abstract : Twenty-five-year-old Dashehari mango trees growing under uniform cultural practices in Hoshiarpur, Punjab, India were treated with different plant growth regulators, i.e. NAA (100 and 200 ppm), TIBA (100 and 200 ppm) and CCC [chlormequat] (500 and 1000 ppm) as spray and paclobutrazol (PBZ, 5 and 10 g a.i./tree) as soil drench, prior to flower bud differentiation (first fortnight of October). Soil application of PBZ at 5 and 10 g a.i./tree considerably increased the percentage of panicles and hermaphrodite flowers, fruit yield, total soluble solids/acid ratio and total sugars. Similarly, NAA at 100 ppm significantly improved the fruit size, weight and soluble solids over the control. On the contrary, higher doses of other plant growth regulators had detrimental effects on majority of the physico-chemical characters of the fruits.