- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
COMPATIBILITY BETWEEN Avaunt INSECTICIDE AND Beauveria bassiana IN CONTROLLING COTTON LEAF WORM Spodoptera littorali | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 14, Issue 3, 2009, Pages 0-0 | ||
| Authors | ||
| Sh. H. Al-obaidi; S. H. Samir | ||
| Abstract | ||
| The purpose of this study was to evaluate the compatiblity of the insecticide, Avaunt and the biocontrol agent B. bassiana in control cotton leaf worm Spodoptera littoralis. Results revealed a considerable compatibility between Avaunt and B. bassiana, the effective concentration (EC50) of Avaunt to the biocontrol agent was 275 mg/L. However Avaunt was active against the insect at rate of 10.5 mg ai/ L when combined with the biocontrol agent. Laboratory studies showed that larval stages were the most susceptible to Avaunt, which caused 100% mortality at first and third instar within 5 days while such percentage of control was achieved within 7 days after treatment for the 5th instar. Slow the activity of biocontrol agent B.bassiana against larvae was slow after treatment, however the percentage of mortality reached 100% at 14th days after application. There was no significant difference between the treatment of Avaunt at a half rate in combination with the biocontrol agent and treatment of Avaunt. The combination of Avaunt with biocontrol agent caused complete mortality for larval stages at the 7th day while treatment of Avaunt achieved complete mortality at the 5th day, Therefore the combination treatment of Avaunt with the Biocontrol agent was the best treatment because it reduced the quantity of insecticide that caused environmental pollution and caused the compelet mortality for larval stages after 7th day of treatment. It can be concluded that the application of Avaunt can be recommended in IPM program to control cotton leaf worm without harmful effect on the biological agent B.bassiana | ||
|
Statistics Article View: 122 PDF Download: 39 |
||