Succession of major insect pests and their natural enemies on soybean [Glycin max (L) Merrill]

Abstract

The field experiment was conducted to study the succession of major insect pests and their natural enemies on soybean during Kharif season 2024 at Experimental Field of Bio-Control Research & Production Centre, JNKVV, Jabalpur (MP). Eight insect pests and five natural enemies were found to be active on soybean crop viz., Whitefly, Bemisia tabaci (Genn.), Dragonfly, Tholymis tillarga (Fab) and Damselfly, Copera marginipes (Rambur) were first observed on 14 days old crop (DOC) and continued up to 104 DOC total duration of 90 days. Jassid, Empoasca kerri (Pruthi) was first observed on 17 DOC and present up to 104 DOC total duration of 87 days. Stem fly, Melanagromyza sojae (Zehnt.), Bean leaf beetle, Cerotoma trifurcate (Forster), Ladybird beetle complex like seven-spotted ladybird beetle (Coccinella septempunctata) and zig-zag ladybird beetle (C. transversalis) were firstly observed 21 DOC and present up to 104 DOC and total duration of 83 days. Green semilooper, Chrysodeixis acuta (Walk.), Leaf folder, Omiodes indicata (Fab) and Spider, Oxyopes salticus (Hentz) were firstly observed on 28 DOC and present upto 104 DOC total duration of 76 days. Tobacco caterpillar, Spodoptera litura (Fab) and Bihar hairy caterpillar, Spilarctia obliqua (Walk) were first observed on 35 and 38 DOC respectively and present up to 104 DOC total duration of 69 and 66 days, respectively.