Field Efficiency of Certain Neonicotinoids Alone and Their Mixtures With Chlorpyrifos Against, Aphis gossypii, Bemisia tabaci and Their Predators Coccinella septempunctata and Chrysoperla carnea | ||
| Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control | ||
| Article 14, Volume 8, Issue 2 - Serial Number 1, December 2016, Pages 135-144 PDF (698.77 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/eajbsf.2016.17126 | ||
| Authors | ||
| Hassan Fouad Mohammed Abdel-Hamid1; El-Sayed Mohammad Soliman2; Hanan. H. Osman3 | ||
| 1Cotton Pesticides Bioassay Dept, Plant Protection Res. Institute, ARC | ||
| 2Standard Rearing Dept., Central Agricultural Pesticides Laboratory, ARC | ||
| 3Cotton leaf worm Dept., Plant Protection Res. Institute, ARC | ||
| Abstract | ||
| Cotton aphid, Aphis gossypii and whiteflies, Bemisia tabaci are an important pests in cotton plants in Egypt. The present work was conducted during two successive seasons 2014 and 2015 in Beni- suef Governorate on the cotton crop by spraying the tested insecticides alone and mixtures of both acetamiprid and thiamethoxam with chloropyrifos to estimate the percentage of reduction of Aphis gossypii and Bemisia tabaci and their associated predators, Coccinella septempunctataand Chrysoperla carnea,after different intervals which include (24 hours) to estimate the immediate effect, as well as after 3 ,7 and 14 days to evaluate the latent effect. Results indicated that acetamiprid, thiamethoxam and chloropyrifos alone proved to reduce Aphis gossypii and Bemisia tabaci populations up to 14 days after treatment throughout both seasons. Whereas, combination of acetamiprid and thiamethoxam with chloropyrifos at half recommended rate showed the high efficiency with reduction percentage reached to 100.0% at same exposure time during the successive seasons 2014 and 2015. In addition, acetamiprid, thiamethoxam and chloropyrifos proved the high reduction percent to the populations of Coccinella septempunctata and C. carnea when these insecticides were used alone at recommended rate at 24h from treatments. Chlorpyrifos in mixtures with both acetamiprid, and thiamethoxam at half recommended rate showed the high effect with reduction percentage reached to 100.0% reductions for both predators in two seasons. Results suggested that, choosing suitable insecticide to control the tested cotton pests not only depends on its efficiency but also its toxicity to natural enemies. Also, these results indicated that the initial kill and residual effect of these insecticides was highly persistent up to 14 days. The overall results appeared promising in combination with insecticides as result of significant increasing its reduction percent. | ||
| Keywords | ||
| Acetamiprid; thiamethoxam; chlorpyrifos ethyl; mixtures; Bemisia tabaci; Aphis gossypii; Coccinella septempunctata and Chrysoperla carnea | ||
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