Efficiency of some Hermetic Monolayer Plastic Packing Materials for Protecting Wheat Grains against Sitophilus oryzae

Packing is an important process in storage of wheat grain. Current study focused on using different packages and different colorless or colored included, red, blue, black and yellow colors as wheat grain protectants. Polypropylene (PP) was the best with 50 emerged adults of Sitophilus oryzae, 12.33% damage and 6.83% weight loss a compared with sack cloth which had 135 emerged adults, 25% damage and 13.50% weight loss. PP also had the best germination with 63.33%, 1.41% Ash and 10.48% protein of wheat grain after three months storage. Yellow color with all package types achieved the greatest promising findings it reduced the % damage and % weight loss compared to the other tested colors under study for example with PP package the damage of wheat grain with yellow color was 8.67% while with control the damage was 12.13% followed by blue color with 11%. The study also mentioned that the interaction between packages type and colors affected on S. oryzae development and also had a significant effect on chemical and physical components of wheat grain.