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Swami Keshwanand Rajasthan Agricultural University (2015)

Eco-friendly Management of Tomato Fruit Borer, Helicoverpa armigera (Hub.) in Hyper Arid Region of Rajasthan

Narendra Singh

Titre : Eco-friendly Management of Tomato Fruit Borer, Helicoverpa armigera (Hub.) in Hyper Arid Region of Rajasthan

Auteur : Narendra Singh

Université de soutenance : Swami Keshwanand Rajasthan Agricultural University

Grade : Master of Science (MS) 2015

Résumé
The present investigations on “Eco-friendly Management of Tomato Fruit Borer, Helicoverpa armigera (Hub.) in Hyper Arid Region of Rajasthan” was carried out at farm of Agricultural Research station, Swami Keshwanand Rajasthan Agricultural University, Bikaner during rabi, 2013-14. The incidence of fruit borer started in the last week of December on tomato. The population lowered down upto 3rd SMW and thereafter, population increased but fluctuating trend was recorded upto 9th SMW. The larval population increased and reached to peak in 12th SMW. Thereafter, it’s population decreased gradually and negligible population was recorded upto second week of April. A significant positive correlation was observed between pest population and maximum and minimum temperature, whereas, it was non-significant positive with average relative humidity. A non-significant negative correlation was computed between pest population and total rainfall. The bio-efficacy of nine insecticides evaluated against fruit borer in tomato revealed that indoxacarb 14.5 SC (0.01%) was found most effective against fruit borer followed by novaluron 10 EC (0.01%) and acephate 75 SP (0.037%). B. thuringiensis 8L (0.012%) proved least effect followed by HaNPV (250 LE/ha) and quinalphos 25 EC (0.02%).The treatments of chlorantraniliprole 18.5 SC (0.02%), abamectin 5 SG (0.01%) and spinosad 2.5 SC (0.01%) ranked in middle order of their efficacy.

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