Effect of conserved natural enemies on pest infestation in lablab bean (Lablab purpureus L.) by using border crops

Abstract

The research project entitled “Pest management in Lablab bean (Lablab purpureus L.) by using border crops” was undertaken at Agronomy Farm, College of Agriculture, Dapoli during rabi 2016-17. The pooled percent reduction in aphid population over control was in the range of 52.01 to 61.23. The highest (61.23) reduction was observed in the treatment Sweet corn as flowering plant on bunds followed by Marigold (60.43), Safflower (57.46), Cowpea (56.87) and Mustard (56.05). The pooled percent reduction in number of holes made by leaf eating caterpillar over control was in the range of 57.25 to 72.35. The highest (72.25) reduction was observed in the treatment Sunflower as flowering plant on bunds followed by Coriander (67.74), Mustard (65.95), Sweet corn (64.67), Sesamum (64.16), Safflower (60.32), Cowpea (59.81) and Marigold (57.25).The pooled mean percent reduction in infestation of Pod borer in six weeks was in the range of 33.85 to 49.77. The highest (49.77%) reduction was observed in the treatment Sweet corn as a flowering plant on bunds followed by Sunflower (48.37%), Mustard (47.72%), Coriander (47.36%) and Marigold (46.15%).