author(s)
Anusuya RM, Kiruthika D, Manomithra R and Shofia Banu T

abstract
The pulse beetle Callosobruchus maculatus (Fabricius) is a major constraint in the storage of mung bean, causing significant quantitative and qualitative losses. The present study evaluated the efficacy of sun drying, selected plant powders, and botanical oils for the management of this pest under storage conditions. Mung bean seeds were subjected to different treatments, including sun drying at varying times, application of castor, tulsi, and eucalyptus leaf powders (5% w/v), and coating with botanical oils. Results indicated that sun drying between 11:00 am and 3:00 pm significantly reduced oviposition compared to control. Among plant powders, castor leaf powder exhibited the highest oviposition deterrence (29.33%), while tulsi powder recorded the highest adult mortality (97.54%), followed by eucalyptus powder (89.99%). Notably, all botanical oils provided complete protection, achieving 100% adult mortality and preventing oviposition. These findings highlight the potential of simple, eco-friendly, and cost-effective approaches in reducing postharvest losses of mung bean. The integration of botanical powders and oils into storage practices could contribute to sustainable pulse protection strategies. Further validation through pilot field trials and formulation development is recommended to support adoption in farmer-level storage systems.