Efficacy Evaluation Of Conventional And Non- Conventional Pesticides Against The Red Mite Tetranychus urticae And Cotton leafworm, Spodoptera littoralis In Benisuef Governorate Cotton Fields During Seasons 2013 And 2014
Abstract: The toxicity of experimental pesticides and the resistance coefficient (RC) against the red mite Tetranychus urticae and the cotton leafworm Spodoptera littoralis collected from Benisuef Governorate cotton fields during 2013 and 2014 were determined.
The results indicate that Vapcomic 1.8% showed the most toxic effect against the adult of T.urticae with LC50 0.15 ppm in cotton season 2013 reached to 0.30 ppm in cotton season 2014. The tested acaricides Permectine , Vertemic, Vapcomic and Challenger had lack of resistance against red mite with RC > 1 in cotton seasons 2013 and 2014.
Spintor 24 % was the most toxic biocides used against the cotton leafworm with LC50 2.22 and 4.92 ppm in 2013 and 2014 cotton seasons respectively. Also,Spintor only the tested biocides had lack of resistance with RC 0.21 and 0.40 against cotton leafworm in cotton seasons 2013 and 2014 respectively.
DursbanH , exhibited the highest level of toxicity to the tested insecticides with LC50 18.02 and 21.18 ppm in cotton seasons 2013 and 2014 .Also , the two insecticides used Dursban H and Nasrphose .had lack of resistance against Spodoptera littoralis in cotton seasons 2013 and 2014 with RC > 1 .
Match was the most toxic IGR to the cotton leafworm with LC50 0.29 in cotton season 2013 reached to0. 92 ppm in cotton season 2014.
The tested IGR Match had lack of resistance in cotton season 2013 and 2014 with RC 0.11 and 0.43.
It may be concluded that the bio-acaricides Permectine ,Vertimec and Vapcomic and the bio-insecticides Spinosad and IGR Match can be considered as significant compounds for cotton crop production management .
Publication year 2015
Organization Name
Country Egypt
Publisher Name: مجلة المصرية للعلوم التطبيقية
serial title مجلة المصرية للعلوم التطبيقية
Author(s) from ARC
Publication Type Journal
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