author(s)
Shamik Dey, Tufleuddin Biswas, Kingshuk Roy and Krishna Karmakar

abstract
An experiment was conducted at Balindi Research Complex Farm of Bidhan Chandra Krishi Viswavidyalaya, West Bengal during Rabi season of 2018-2019, to evaluate the impact of spot application of Fipronil 5 % SC @ 1 ml per litre of water against the fall army worm in maize crop. Fipronil 5% SC @ 1 ml per litre of water was applied in the maize field as spot application in three different tillage along with different fertilizers regimes of five hybrid maize cultivars (PAC 741, ADV 759, ADV 757, PAC 751, ADV 9293). Among the tillage, zero tillage showed lowest population (0.04) whereas in conventional tillage and reduced tillage the population density of the pest was almost the same. Again, among the fertilizer’s residue doses, the treatment with 100% paddy straw residue + 75% N. P. K and 50% paddy straw residue+ 75% N. P. K showed significantly reduced pest population (0.02) just 3rd days after spraying. Among the five varieties ADV-757 performs the best across the tillage and fertilizer regimes.