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Sayed-Ahmed, M., El-Bermawy, Z., El-Shiekh, T. (2019). TOXICOLOGICAL STUDIES ON THE STATUS OF COTTON LEAF WORM SPODOPTERA LITTORALIS (BOISD) RESISTANCE TO CERTAIN INSECTICIDES IN MENOUFIA GOVERNORATE. Menoufia Journal of Plant Protection, 4(2), 45-53. doi: 10.21608/mjapam.2019.117165
M. A.A. Sayed-Ahmed; Zeinab A. El-Bermawy; T.A. El-Shiekh. "TOXICOLOGICAL STUDIES ON THE STATUS OF COTTON LEAF WORM SPODOPTERA LITTORALIS (BOISD) RESISTANCE TO CERTAIN INSECTICIDES IN MENOUFIA GOVERNORATE". Menoufia Journal of Plant Protection, 4, 2, 2019, 45-53. doi: 10.21608/mjapam.2019.117165
Sayed-Ahmed, M., El-Bermawy, Z., El-Shiekh, T. (2019). 'TOXICOLOGICAL STUDIES ON THE STATUS OF COTTON LEAF WORM SPODOPTERA LITTORALIS (BOISD) RESISTANCE TO CERTAIN INSECTICIDES IN MENOUFIA GOVERNORATE', Menoufia Journal of Plant Protection, 4(2), pp. 45-53. doi: 10.21608/mjapam.2019.117165
Sayed-Ahmed, M., El-Bermawy, Z., El-Shiekh, T. TOXICOLOGICAL STUDIES ON THE STATUS OF COTTON LEAF WORM SPODOPTERA LITTORALIS (BOISD) RESISTANCE TO CERTAIN INSECTICIDES IN MENOUFIA GOVERNORATE. Menoufia Journal of Plant Protection, 2019; 4(2): 45-53. doi: 10.21608/mjapam.2019.117165

TOXICOLOGICAL STUDIES ON THE STATUS OF COTTON LEAF WORM SPODOPTERA LITTORALIS (BOISD) RESISTANCE TO CERTAIN INSECTICIDES IN MENOUFIA GOVERNORATE

Article 2, Volume 4, Issue 2, April 2019, Page 45-53  XML PDF (471.06 K)
Document Type: Original Article
DOI: 10.21608/mjapam.2019.117165
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Authors
M. A.A. Sayed-Ahmed1; Zeinab A. El-Bermawy1; T.A. El-Shiekh2
1Department of Pesticides, Fac. Agriculture, Menoufia Univers .
2Plant protection Res. Inst. Dokki, Giza
Abstract
The response of cotton leaf worm 4th instar larvae, representing field population of Menoufia governorate to different insecticide groups (organophosphates– carbamates– synthetic pyrethroids– insect growth regulators and naturally– derived insecticides "Naturalyte") were determined and expressed as LC50 values. The comparison between investigated compounds was made on the basis of tolerance or resistance ratio. Data illustrated that, the highest tolerance ratio was recorded for synthetic pyrethroids followed by carbamates, then organophosphates. In general the population exhibited moderate level of tolerance to the unconventional insecticides including insect growth regulators and naturalytes.
The 4th instar larvae of S.littoralis were subjected to selection with chlorpyrifos and Spinenotram for 6 successive generations .
Keywords
Cotton leafworm; tolerance; organophosphate; carbamates; synthetic pyrethroids; IGRs; Naturalyte
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