Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Bio-efficacy of different insecticides against pearl millet Earhead worm, Helicoverpa armigera (Hub.) in Summer Pearl millet: Pennisetum glaucoma (L).

Abstract

The field experiment was carried out bio-efficacy of different insecticides against pearl millet Earhead worm, Helicoverpa armigera (Hub.) in Summer Pearl millet at Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar during the year 2011. Among various insecticides tested, Endosulfan + dichlorvos recorded minimum larval population and highest grain yield (2357 kg/ha) and was at par with spinosad (2306 kg/ha), indoxacarb (2263 kg/ha) and profenophos (2081 kg/ha). Based on overall efficacy and cost of treatment, the treatment of spinosad (1:30.00) was most effective and economical followed by indoxacarb (1:27.95), endosulfan + dichlorvos (1:27.40), profenophos (1:16.58), dichlorvos (1:16.38), quinalphos (1:11.46) and endosulfan (1:9.71) to manage ear head worm in pearl millet crop. The lowest avoidable loss due to incidence of H. armigera in pearl millet yield was observed in plots treated with spinosad (2.14%) and it was followed by indoxacarb (3.97%) and profenophos (11.70%), however, such loss was highest in untreated plots (60.24%).