EFFECT OF RICE VARIETIES AND STORAGE PERIOD AND LEVEL INFESTSTION ON SAW TOOTHED GRAIN BEETLE (Oryzaephilus surinamensis L. , Coleoptera : Silvanidae )
The present study included the effect of local rice varieties Anbar , Aqqrawi , Baziani and imported varieties American , Vietnami , Thailandi and the effect of storage period 2 ,4 Months with the effect of levels infestation 10 ,20 ,30 insect on the population density and growth rate of saw to...
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| Format: | Article |
| Language: | English |
| Published: |
College of Agriculture
2012-06-01
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| Series: | Mesopotamia Journal of Agriculture |
| Online Access: | https://magrj.mosuljournals.com/article_34645_af6c9dbcd22fd87099957907128bb35e.pdf |
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| Summary: | The present study included the effect of local rice varieties Anbar , Aqqrawi , Baziani and imported varieties American , Vietnami , Thailandi and the effect of storage period 2 ,4 Months with the effect of levels infestation 10 ,20 ,30 insect on the population density and growth rate of saw toothed grian beetle and loss weight in seeds . the results showed that the average of population density increased with increasing storage period from 48.96 to 73.29 insects , Aqrawi variety had a high population 110.55 insect and American variety had a low population 33.80 insect . The average of population density increased too with increasing level infestation from 47.97 to 62.70 to 72.72 insect , respectively , and the general average of growth rate reached 1.36 and 1.08 for storage periods , respectively , and 1.66 ,1.09 and 0.84 for level infestation , respectively . According to loss weight , the general rate 0.29 and 0.38 gm.for storage poriod , respectively ,and 0.22 ,0.34 and 0.45gm.for level infestation , respectively |
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| ISSN: | 1815-316X 2224-9796 |