Manish Saini’s Post

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Attended|| SHUATS || M.sc || Entomology ||

●Rice weevil: Sitophilus oryzae, S. zeamais, S. granarius ●Host range: Wheat, rice, maize, jowar, paddy. ●Symptoms of damage: -Both grub and adults cause the damage. -Grains are hollowed out; kernels are reduced to mere powder. S. oryzae and S. zeamais starts its attack in field itself. -Adults cut circular holes. Heating takes place during heavy infestation, which is known as ‘dry heating’ ●Identification of the pest: •Egg - Translucent white, plugs the egg hole with gelatinous secretion, laid singly on grains. •Grub - White with yellowish brown head, apodous, fleshy, curved, remains within the grain •Pupa - Pupates inside the grain. •Adult - Small, reddish brown to chocolate coloured weevils has characteristic snout, and the elytra have four yellow spot. ●Insecticides:The use of insecticides is discouraged around food materials. Insecticides are supplementary to sanitation and proper storage. Household insecticides have no effect on insects within food packages. For extra protection, some treat seeds or grains before storage with dusts or sprays of synergized pyrethrins, labeled for this use. (Follow label directions and safety precautions.) If the problem becomes severe and widespread, contact a reputable, licensed pest control operator who has the training, experience, equipment, and insecticides to get the control job accomplished safely.

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