Phenological relationship between mango hoppers Idioscopus spp. and mango inflorescence/fruit.
Talpur M. A., Khuhro R. D., Nizamani I. A.
Author Affiliation: Faculty of Crop Protection, Sindh Agriculture University, Tandojam - 70060, Sindh, Pakistan.
Pakistan Journal of Applied Sciences 2 : 533-536
Abstract : An experiment on the phenological relationship between mango hoppers (Idioscopus clypealis, I. niveosparsus and Amritodus atkinsoni) and mango inflorescence per fruit was conducted in Tandojam, Pakistan, during 1999-2000. Mango hoppers were recorded during 30 December (0.06/shoot) on all the mango cultivars (Almas, Sindhri and Neelum). The population density increased gradually on the cultivars until the second fortnight of February, which increased rapidly thereafter. The peak populations of mango hopper on Almas (24.23/shoot) and Sindhri (25.66/shoot) were recorded on 23 March and 30 March, respectively. However, peak population density in Neelum (22.52/shoot) was recorded on 16 March. Thereafter, population of hoppers declined towards fruit maturation in all the cultivars. Population density of mango hopper had positive significant correlation with the inflorescence phenology in all the mango cultivars, however, population of hoppers had negative correlation with fruit development. The population of mango hopper had positive significant correlation with temperatures in Almas. The relative humidity had negative non-significant correlation with mango hoppers on all the mango cultivars.