Comparative efficacy of certain commercial and natural neem products against leaf folder, Cnaphalocrocis medinalis (Guenee) on paddy

Abstract

A field experiment was conducted during Kharif season 2019 at central crop research farm, Department of Entomology, SHUATS, Prayagraj, (UP). A replicated field trial was conducted in a Randomized block design at central crop research farm. The objective was to include the commercial and natural neem products to control the leaf folder, (Cnaphalocrocis medinalis). A spray was given in two intervals. There were seven treatments each replicated thrice. Among seven treatments the combination of Neem oil + NSKE proved the best efficacy with 9.85 in first spray and 7.25 in the second spray and also 40.25 q/ha increased by 23.75 q/ha compared to control plot in yield and B:C ratio is 1:5.90 were recorded followed by Neem oil proved efficacy with 8.35 in second spray and yield with 38.75 q/ha and B:C ratio is 1:5.72. It could be concluded that for the management of Rice Leaf folder (Cnaphalocrocis medinalis) on Rice crop, recommended treatment schedule of Neem oil + NSKE proved to be most effective and economical.