A time-tested method for the storage of pulse grains for protection against grain pests, is in practice in Kheda district of Gujarat. In this practice, farmers put the grains in earthen containers and cover the grains with layers of fine sand and wood ash for protection from the grain pests and hence proves its success and advantage as a natural remedy where artificial pesticides are rendered needless.
Crop: Mustard
Formulation: Sand and wood ash
Ingredients: Earthen containers, fine sand and wood ash
"Post harvest management of pulses"
https://iipr.icar.gov.in/pdf/postbulletins2may13.pdf
"Protection of stored grain and pulses."
http://journeytoforever.org/farm_library/AD18.pdf