My stored moong and chana have small round holes and tiny beetles are coming out. People call it dhora. How do I save the rest?
3 Answers
The round exit holes and small beetles are bruchids, also called pulse beetle or dhora. The female lays eggs on the seed in the field or in storage, the grub bores inside, eats the cotyledon and then chews its way out, leaving that round hole. So the damage you see started earlier. To save the rest, first sun dry the pulses well on a clean sheet for a few hours, which kills many eggs and young stages and lowers moisture. Sieve to remove damaged, holed and powdery grain. Then store the clean, dry pulses in a fully filled airtight container or hermetic bag so the seal cuts off oxygen and stops the beetle completing its life cycle. Many farmers also mix in dry neem leaves or a little dry ash as a traditional repellent layer, which can help reduce reinfestation but is not a cure on its own. Keeping the storage room dry, clean and free of old infested grain matters a lot, because bruchids carry over from last year's leftovers. Any chemical fumigant is hazardous and restricted, so use it only through a trained or authorised person following the label. For seed or food pulses, sun drying plus airtight storage is the safe and effective method. Verify the practice with your KVK for your crop and climate.
Airtight storage really does it. I put my chana in a sealed container and the beetles inside died on their own in a few weeks with no powder added.
Dry neem leaves between the layers has been a habit in our family for generations for stored dal.