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EL-ADEWY, A., YOUSRI, H., AHMED, Y., TIILIKKALA, K., EL-SHARKAWY, T. (2000). ESTIMATION OF GENERAL SELECTIVE TOXICITY RATIOS OF CERTAIN ACARICIDES TO STETHORUS GILVIFRONS (MULSANT) AND ITS PREY TETRANYCHUS URTICAE KOCH. Egyptian Journal of Agricultural Research, 78(3), 1081-1089. doi: 10.21608/ejar.2000.322667
ABD-ALLA M. M. EL-ADEWY; HUSSEN YOUSRI; YOUSRI M. AHMED; KARY TIILIKKALA; TAHA A. EL-SHARKAWY. "ESTIMATION OF GENERAL SELECTIVE TOXICITY RATIOS OF CERTAIN ACARICIDES TO STETHORUS GILVIFRONS (MULSANT) AND ITS PREY TETRANYCHUS URTICAE KOCH". Egyptian Journal of Agricultural Research, 78, 3, 2000, 1081-1089. doi: 10.21608/ejar.2000.322667
EL-ADEWY, A., YOUSRI, H., AHMED, Y., TIILIKKALA, K., EL-SHARKAWY, T. (2000). 'ESTIMATION OF GENERAL SELECTIVE TOXICITY RATIOS OF CERTAIN ACARICIDES TO STETHORUS GILVIFRONS (MULSANT) AND ITS PREY TETRANYCHUS URTICAE KOCH', Egyptian Journal of Agricultural Research, 78(3), pp. 1081-1089. doi: 10.21608/ejar.2000.322667
EL-ADEWY, A., YOUSRI, H., AHMED, Y., TIILIKKALA, K., EL-SHARKAWY, T. ESTIMATION OF GENERAL SELECTIVE TOXICITY RATIOS OF CERTAIN ACARICIDES TO STETHORUS GILVIFRONS (MULSANT) AND ITS PREY TETRANYCHUS URTICAE KOCH. Egyptian Journal of Agricultural Research, 2000; 78(3): 1081-1089. doi: 10.21608/ejar.2000.322667

ESTIMATION OF GENERAL SELECTIVE TOXICITY RATIOS OF CERTAIN ACARICIDES TO STETHORUS GILVIFRONS (MULSANT) AND ITS PREY TETRANYCHUS URTICAE KOCH

Article 9, Volume 78, Issue 3, September 2000, Page 1081-1089  XML PDF (2.28 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2000.322667
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Authors
ABD-ALLA M. M. EL-ADEWY1; HUSSEN YOUSRI1; YOUSRI M. AHMED2; KARY TIILIKKALA3; TAHA A. EL-SHARKAWY4
1Plant Protection Research Institute, Ismailia Agricultural Research Station, Egypt
2Plant Protection Department, Faculty of Agriculture, Suez Canal University, Egypt
3Agricultural Research Centre of Finland, 31600 Jokioinen, Finland
4Plant Pathology Research Institute, Agricultural Research Centre, (Under Secretary of State for plant quarantine, Ministry of Agriculture, Dokki, Giza, Egypt
Abstract
The general selective toxicity ratio of twelve acaricides to avoid the confusion result from the use of two selective ratios, at LC50 and LC90 levels, was determined. The relative toxicity of the tested com­pounds against S.gilvifrons and its prey T.urticae, revealed that dicofol was the most effective compound. whereas fenpyroximate was the least effective against the mite at each of LC50 and LC90 !eels. Results also showed that fenpropathrin had the highest toxicity, at the same former levels, while propargite (Comite) had the lowest toxicity at LC50 level and propargite (Acargite) at LC90 level against S.gilvifrons. The value of the general selective toxicity ratio recommended fenazaquin, propargite (Acargite), azocyclotion, dicofol, ethion, propargite (Comite), bromo­propylate, hexythiazox, profenofos and fenpyroximate as the safest acaricides for S.gilvifrons as compared to its prey T.urticae.
Keywords
selective; acaricides; Stethorus gilvifrons; Tetrany‌chus urticae
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