Utilization of Nuclear Polyhedrosis Virus in the Integrated Control of Fruit-borer (helicoverpa Armigera) on Tomato (lycopersicon Esculentum)
Year: 1999
Type: article
Abstract: An experiment was conducted during spring season of 1992 and 1993 to study the effectiveness of nuclear polyhedrosis virus alone and in combination with endosulfan in the integrated control of fruit-borer [Helicoverpa armigera (Hubner) on tomato (Lycopersicon escllientum Miller nom. cons.). Three sprays of endosulfan 0.07% at 10-day intervals starting from 50% flowering of the crop proved to the best. Likewise application of Helicoverpa armigera nuclear polyhedrosis virus @ 700 larval equivalen/ha gave better protection to tomato crop from, H. armigera to 98.25-100.00% reduction in larVal population, 6.89% mean fruit damage, 57.49 kg/plot (4 m X 5 m) mean total YIeld and 53.64 kg/plot mean marketable yield; and it was as effective as Helicoverpa almigera nuclear polyhedrosis virus @ 500 larvae equivalent/ha dose. Sequential application with first spray of endosulfan 0.07% followed by 2 sPraYs of Helicoverpa armigera nuclear polyhedrosis virus @ 250 larval equivalentlha greatly reduced the larval popUlation and was comparable with endosulfan 0.07% applied alone in 3 sprays.
Authors: D. S. Pokharkar, Shikha Chaudhary, S. K. Verma
Language: English
Subfield: Insect Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W418375435