Impact of various insecticides and planting dates on the management of maize stem borer Chilo partellus

Abstract

Field experiment on the impact of various insecticides and planting dates on the management of maize stem borer Chilo partellus in maize crop was conducted at Malakandair farm of The Agricultural University, Peshawar. Maize variety Jalal was raised on three different dates viz. 22^nd June, 04 July and 16^th July, 2014; and treated with Furadon 3G, Thimet 5G, Ripcord 10EC, Thiodan 35 EC, Karate 25 EC. Results revealed that means for number of healthy plants m^-2, infested plants m^-2, larvae in stubbles m^-2, dead hearts m^-2, and grains yield kg ha^-1 showed significant effects due to insecticides and sowing dates. The number of healthy plants m^-2 and yield in kg ha^-1 were highest while the number of infested plants m^-2, dead hearts m^-2 and larvae in stubbles m^-2 were lowest in the plots treated with Furadon 3G (77.46, 1759.44, 11.63, 9.42 and 3.56) followed by Thimet (75.16, 1643.22, 14.64, 10.34 and 5.00) as compared to other extremes in Control (61.91, 1131.78, 21.48, 17.29 and 10.56). The number of healthy plants m^-2 and yield in kg ha^-1 were highest while the number of infested plants m ^-2, dead hearts m^-2 and larvae in stubbles m^-2 were lowest in the plots sown on 22^nd June (74.09, 1596.44, 15.20, 10.88 and 5.28) as compared to other extremes in plots sown on 16^th July (71.24, 1401.50, 17.13, 13.73 and 7.44 respectively). The sowing date of 22^nd June along with the application of Furadon 3G showed significant results for all the recorded parameters as compared to other treatments.

Keywords: Insecticides, Planting dates and Maize Stem Borer