Relative incidence of leaf webber, Orthaga exvinacea hamp. on varieties and hybrids of mango (Mangifera indica L.).
Reddy D. S.
Author Affiliation: Horticultural College and Research Institute, DRYSRHU, Ananthrajupeta - 516 105, Koduru, Andhra Pradesh, India.
Pest Management in Horticultural Ecosystems 19 : 234-236
Abstract : Field studies were conducted in Andhra Pradesh, India, to determine the response of 22 mango cultivars and hybrids against leaf webber (Orthaga exvinacea) incidence. The 22 mango cultivars and hybrids were screened for leaf weber incidence. The numbers of live webs per tree were recorded in the different cultivars and hybrids for a period of 4 years during September to determine the damage intensity and the data was pooled to get the total number of live webs. Results revealed that none of the 16 cultivars and 6 hybrids screened were resistant to the leaf webber. The number of live webs ranged from 0-18, 0-24, 0-20 and 1-33 per tree in 2009, 2010, 2011 and 2012, respectively, indicating that there was some variation in the year to year infestation, with 2012 readings showing maximum incidence of leaf webber compared to the other years under observation. No mango cultivars or hybrids screened for leaf webber incidence were highly resistant to the insect pest. all the cultivars and hybrids screened were susceptible to leaf webber incidence and the cultivar Pulihora and hybrid Ratna were highly susceptible.