Effectiveness of spray schedules on leaf-hoppers of mango and their effect on fruit yield in Dasheri mango.
Rahman S. M. A., Gajendra Singh
Author Affiliation: Department of Entomology, G B Pant University of Agriculture and Technology, Pantnagar, Uttaranchal 263 145, India.
Pest Management and Economic Zoology 12 : 61-64
Abstract : In 2001, effective control of mango hoppers (including Amritodus atkinsoni, Idioscopus clypealis and I. niveosparsus) was obtained on 25-30 years old Dasheri mango trees, grown in Pantnagar, Uttaranchal, India, by following 1, 2 and 3-spray schedules consisting of foliar sprays of monocrotophos (0.15%) (1-spray schedule), monocrotophos followed by endosulfan (0.15%) at 15-day interval (2-spray schedule) and sprays of the 2 insecticides followed by carbaryl (0.2%) at 30-day interval (3-spray schedule) compared with the untreated control. The hopper population was kept below one hopper per panicle throughout the season in 3-spray schedule while the population was also significantly less in the other schedules compared to the control. In the 3-spray schedule, the number of fruits harvested as well as fruit weight was maximum but at par with the 2-spray schedule. In the 1-spray schedule the number of fruits harvested was statistically at par with the control.