International Journal of Chemical Studies
Vol. 5, Issue 5 (2017)
Effect of botanical insecticides on the population of Maize cob borer Helicoverpa armigera Hubner
Author(s): Sanjay Kumar, Sonali Deole, YK Yadu and D Dash
Abstract: The present study was conducted during kharif 2015-16 at the Research cum Instructional Farm of Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.).The minimum cob borer larvae was recorded in plots sprayed with Indoxacarb (0.23) which was at par with NSKE 5% @ 25 litres/ha, (0.27), followed by Neem oil 2% @ 10 litres/ha, (0.33), Karanj oil 2% @ 10 litres/ha, (0.37), Karanj seed powder @ 25 kg/ha, (0.33) and Chilli-Garlic solution @ 9 kg/ha (0.33) treated plots. The maximum cob borer larvae was recorded (0.40) with Chilli solution of @ 10 kg/ha, significantly superior over untreated control (0.87 larvae/cob). The maximum grain yield was recorded in plots treated with Indoxacarb 14.5 SC (30.05 q ha-1) The descending order among the botanical insecticides with regard to yield was Neem oil 2 % (26.03 q/ha), Karanj oil (25.50 q/ha), NSKE (24.83 q/ha), Karanj seed powder (23.58 q/ha) and chilli-garlic solution (21.91 q/ha), respectively. Whereas, chilli solution and chilli-garlic solution recorded lowest yield of 21.91 and 21.08 grain yield, respectively.
Pages: 2084-2089 | 409 Views 13 Downloads
How to cite this article:
Sanjay Kumar, Sonali Deole, YK Yadu, D Dash. Effect of botanical insecticides on the population of Maize cob borer Helicoverpa armigera Hubner. Int J Chem Stud 2017;5(5):2084-2089.