Comparative efficacy of various insecticidal modules against hoppers on mango.
Sahoo A. K., Samanta A.
Author Affiliation: Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia - 741 252, India.
Pesticide Research Journal 18 : 31-32
Abstract : The efficacy of different spray modules namely Module I - endosulfan (0.07%) - carbaryl (0.15%) - endosulfan (0.07%), Module II - nimbicidine (0.2%) - nimbicidine (0.2%) - nimbicidine (0.2%), Module III - nimbicidine (0.2%) - endosulfan (0.07%) - nimbicidine (0.2%), Module IV - chlorpyrifos at 5 ml/litre as soil drench - nimbicidine (0.2%) - endosulfan (0.07%) along with the control were tested against mango hopper (Amritodus atkinson [Amritodus atkinsoni], Idioscopus clypealis and I. niveosparsus) on mango cv. Himsagar under field conditions in Nadia, West Bengal, India, during 2001/02 and 2002/03. The insecticides were applied at fortnightly intervals starting from panicle emergence. Considering the overall efficacy, all the insecticidal modules were significantly superior in controlling the hopper population over the untreated control. Module I was the most effective in suppressing hopper infestation during all the three sprays conducted, followed by module III and module IV, respectively. Module I recorded significantly higher number of fruits at marble stage (172.9 per 100 panicles) and also significantly higher yield (52.83 kg per plant). Module III and Module IV was statistically at par with Module I.