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Tribolium confusum Jacqulien du val | ||
| Kufa Journal for Agricultural Science | ||
| Article 1, Volume 3, Issue 1, 2011, Pages 196-215 | ||
| Abstract | ||
| Abstract This study was carried out to test the effect on biology of the freezing in Tripolium confusem Jacqulien du val at -20 c0 for four times of exposur ( half , one , one and half and two hours) . The results showed that the adult was the more effected at all times , lt reched to 84.26% , while it reched to 73.84 % in pupa stage . The time two hours casused abest mortality at the three stages ( adult , larvae and pupa ) which was 100% . Also it was found that mortality was reduced to 64.85% , 56.75 and 47.92% for adult , larvae and pupa stages respectively for all times when they were plased at ahight of 20 cm. from the freeze iner surface. The results also showed that the time which killed 100% at the adult , larvae and pupa were 90 , 100 and 110 minets respectively . | ||
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