Hydrogen Cynamide (Dormax) impacts on vegetative bud break, yield and quality of apple cv. Starking delicious

Abstract

Hydrogen Cynamide (Dormax) was examined over a two years period for its effect on vegetative bud break, yield and quality of apple cv. Starking Delicious. The experiment was carried out at experimental farm of RHR&TS, Mashobra, Shimla situated at an elevation of 2286m amsl. Hydrogen Cynamide (Dormax) was applied @ 0.5%, 1.0%, 2.0% and 0.0% 4 weeks prior to expected bloom. These treatments were replicated five times and were laid out in Randomized Block Design. All treatments of Dormax advanced vegetative bud sprouting in both the years as compared to control. Maximum bud sprouting (85.58% and 91.43%) was observed in trees treated with 4.0% Dormax 4 weeks prior to expected bloom during 2015 and 2016. Maximum yield (22.33 and 27.14kg/tree), Fruit size in terms of length and breadth (58.87x66.53mm and 59.30x67.18), fruit weight (127.17g and 142.60g) and fruit volume (94.33 and 97.14cc) was recorded maximum in trees treated with Dormax @1.0% applied 4 weeks prior to expected bloom during 2015 and 2016.