Response of foliar spray of different chemicals on flowering and fruit retention of dashehari mango under ultrahigh density plantation

Abstract

The present experiment entitled “Response of foliar spray of different chemicals on flowering and fruit retention in Dashehari mango under ultra high density plantation” was conducted during the year 2015-16 at Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari. The experiment was laid out in Randomized Block Design and replicated thrice. Nine treatments comprising urea (1, 1.5 and 2 %), KNO3 (1 and 2 %), novel organic liquid fertilizer (1 and 2 %) and ethephon 200 mgl-1 along with one control and they were sprayed twice, first fortnight of October and November. The effect of these treatments on different parameters of flowering and fruit retention were recorded and analyzed statistically. Results of present investigation revealed that among all the treatments, foliar application of KNO3 @ 2 % treatment gave minimum vegetative shoot and maximum flowering shoot per terminal, minimum vegetative shoot (%), maximum flowering shoot (%), maximum length of panicle and minimum days for full bloom. Fruit setting percentage at pea, marble and maturity stage were significantly the maximum in same treatment. The yield (kg/tree) was significantly the maximum in KNO3 @ 2% treatment.