Effect of Plant Phenology on Infestation by Legume Pod Borer Maruca vitrataon Dolichos Bean


  • T. D. Jayabal Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu
  • J. S. Kennedy Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu




Maruca vitrata, Lablab purpureus var. typicus, incidecne, plant growth stages, unopened/ open flowers, mature/immature pods, single/multiple larvae/pod or bud


The legume pod borer Maruca vitrata (F.) (Crambidae: Lepidoptera) causes considerable yield loss in major edible legumes including dolichos bean Lablab purpureus var. typicus. This study analyses the M. vitrata incidence and abundance in relation to the four plant parts during two consecutive cropping seasons of 2019. The results revealed that peak incidence of 80.00 ± 2.83% was in the 11th week after planting during rabi, 2019, and it was more in unopened flower buds (64.00 ± 8.76%) and mature pods (13.00 ± 0.80%). There existed significant differences between the four growth stages of the crop in the order- flower buds (maximum) ˃ mature pods ˃ immature pods ˃ open flowers (least) during summer 2019. The occurrence of single and multiple larvae was more in the unopened flower buds (78.00 ± 3.35%) and mature pods (52.00 ± 3.35%).


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How to Cite

Jayabal, T. D. ., & Kennedy, J. S. (2021). Effect of Plant Phenology on Infestation by Legume Pod Borer <i>Maruca vitrata</i>on Dolichos Bean. Indian Journal of Entomology, 84(2), 335–339. https://doi.org/10.55446/IJE.2021.114



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