A comparative Study on The 2nd and 4th Instar Larvae of Cotton Leafworm, Spodoptera Littoralis Treated with Methomyl and Spinetoram in The Laboratory. | ||
| Annals of Agricultural Science, Moshtohor | ||
| Volume 62, Issue 3, September 2024, Pages 97-110 PDF (485.87 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/assjm.2024.323358.1315 | ||
| Authors | ||
| Mahmoud Ahmed Abdel-Hamid Darwish* 1; Tahany Roshdy Abdelzaher2; Amany R. Morsy3; Karam Khamis Elgizawy4 | ||
| 1Department of Plant Protection, Faculty of Agriculture, Benha University, Moshtohor,Toukh, 13736, Egypt | ||
| 2Faculty of Agriculture at Moshtohor, Benha University | ||
| 3Department of plant protection.faculity of agriculture.Benha university | ||
| 4Plant Protection Department, Faculty of Agriculture, Benha University, Moshtohor,Toukh, 13736, Egypt | ||
| Abstract | ||
| The effects of two insecticides, namely Methomayl and Spinetoram against the 2nd and 4th instars larvae of cotton leafworm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by LC50 concentrations were evaluated under laboratory conditions to evaluate the mortality percentage and biochemical effects. The results showed that larval mortality rate was positively correlated with the increase of concentrations of the tested insecticides, the methods of tested and time after exposure. The mortality rate in Methomayl was higher than Spinetoram. The two tested compounds caused significant decrease in the stimulation of acetylcholinesterase (AChE) and Total proteins, Total carbohydrates, GOT, GPT, Proteases, Amylase and Lipase activity and caused significant increase in the activity of GST, alpha esterase, Alkaline phosphatase. | ||
| Keywords | ||
| Spodoptera littoralis; Cotton leaf worm; Methomyl; Spinetoram; Biochemical | ||
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