Vol. 11, Issue 6 (2022)

Author(s):
ZA Bhat, TR Rather, Kounser Javeed, HU Itoo, Sheikh Khursheed, GH Rather, Shemoo Nisar, Shahzad Ahmad Bhat and Qudsiya Ayaz

Abstract:
The present study was conducted at AARC to determine the response of the Promalin on the growth of apple (Malus domestica Borkh) cv. Red Delicious. The study shows that the growth of apple fruit was significantly influenced by Promalin (GA4+7 and 6 BA). Among the different treatments, maximum fruit set of 15.89% was recorded with treatment T5 which was at par with treatment T4, however, minimum fruit set of 3.34% was obtained in higher dose (phytotoxic). The longest fruit of 71.06 mm was recorded with T4 which was at par with T3, T5 and T7 whereas the control (Water spray) had fruit of length 60.52 mm and was significantly different from all the treatments. During the investigation, fruit breadth of 70.70 mm was obtained with treatment T5 which was at par with T4, whereas the control (Water spray) had fruit of least breadth 61.34 mm. Maximum fruit colour was observed with lower concentrations of chemical and untreated fruits as compared to high concentration. With higher concentration of chemical, the fruits developed long conical shape (a market driven factor). The data revealed that the chemical sprays did not cause russetting except the phytotoxic concentration which resulted in about 12.67% russetting in treated fruits. No phototoxic symptoms were observed during the course of investigation on fruit or plant.