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EVALUATION OF SOME IPM ELEMENTS FOR THE CORN BORER Sesamia cretica LED. (PHALAENIDAE:LEPIDOPTERA) ON SORGHUM | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 40, Issue 6, 2009, Pages 21-29 | ||
| Author | ||
| Musa M. Al-Hassnawi | ||
| Abstract | ||
| Field experiments were carried out at the fields of the college of Agriculture, Abu-Ghraib, during the fall season/2008 to evaluate the effectiveness of some cultural and chemical methods to control the corn borer, Sesamia cretica Led. on sorghum fields. Results indicated that the delay of the sowing dates of sorghum to the end of July, significantly reduced the infestation percentage of S. cretica and seedling dead heart to 5.03%, 4.74% respectively, compared with that of control treatment of 17.02% and 35.12% respectively. Results also revealed that sowing two rows (lines) of corn in the middle of the sorghum plots, significantly reduced the infestation percentage of S. cretica and seedling dead heart to 4.56%, 16.22%, and even to the lower values of 2.35, 8.91% respectively, When two rows of corn were planted on each side of the sorghum plots, compared with that for the control treatment 17.25%, 34.03% respectively. Results of the effects of the six insecticides tested indicated that IGR's Match and Hi-Catch were most effective and significantly reducing infestation percentage of sorghum plants by the corn borer to (4.19%, 5.92%) and seedling dead hearts to (8.09%, 10.2%) respectively, while its reached a 23.1%, 31.79% in the control plots. The yield of all treated plants was significantly higher than that of untreated plots. However, insecticides can be divided into 3 groups according to their effects on yield of sorghum. Match and Hi-catch treatments were the most effective which lead to increase of yield by 50%, followed by 43% for Sinoprid and( 23.33-26% )for the last group of insecticides, Diazinon 10%,Crusier350FS and Furdan10G.The role of sowing dates, intercropping with corn, and the chemical insecticides tested in the IPM for the corn borer, Sesamia cretica also discussed. | ||
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