PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH
ISKANDER, N., ISKANDAR, A., EL-SISI, A., IBRAHIM, S. (1996). PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH. EKB Journal Management System, 74(2), 5333-343. doi: 10.21608/ejar.1996.427736
NABEL G. ISKANDER; AUDA K. F. ISKANDAR; AHMED G. EL-SISI; SOFY M. IBRAHIM. "PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH". EKB Journal Management System, 74, 2, 1996, 5333-343. doi: 10.21608/ejar.1996.427736
ISKANDER, N., ISKANDAR, A., EL-SISI, A., IBRAHIM, S. (1996). 'PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH', EKB Journal Management System, 74(2), pp. 5333-343. doi: 10.21608/ejar.1996.427736
ISKANDER, N., ISKANDAR, A., EL-SISI, A., IBRAHIM, S. PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH. EKB Journal Management System, 1996; 74(2): 5333-343. doi: 10.21608/ejar.1996.427736

PESTICIDAL EFFICIENCY OF SOME PLANT EXTRACTS AS EMULSIFIABLE CONCENTRATES AGAINST THE SPIDER MITE, TETRANYCHUS ARABICUS ATTIAH

Egyptian Journal of Agricultural Research
Article 5, Volume 74, Issue 2, June 1996, Pages 5333-343    PDF (2.69 M)
Document Type: Original Article
DOI: 10.21608/ejar.1996.427736
Authors
NABEL G. ISKANDER1; AUDA K. F. ISKANDAR1; AHMED G. EL-SISI2; SOFY M. IBRAHIM1
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
2Central Agricultural Pesticides Laboratory, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
The efficiency of Shihh, Sorrel and Kalakh extracts against egg and adult female stages of Tetranychus arabicus at the constant tem­perature (25±2oC) and relative humidity (65±5%) was studied. Bata showed that the toxicity index of shihh was the most toxic extract against egg and adult female stages followed by Sorrel and Kalakh. On the other hand, the adult females of T.arabicus were more susceptible to the three tested plant extracts than the eggs. The biological aspects of T.arabicus were more affected by Shihh than Sorrel and Kalakh extracts. After treatment, the eggs and adult fe­males of T.arabicus with Shihh, Sorrel and Kalakh extracts (on basis of LC50 values), it was found that the average durations of life-cycle were 14.73, 13.60 and 12.13 days, respectively, in case of eggs treatment and it was 16.0,14.13 and 12.70 days, respectively, in case of adult fe­males treatment as compared with control which averaged 11.20 days. The longevity of adult females of T.arabicus was highly effected, as it averaged 7.16, 10.20 and 12.43 days when eggs were treated with Shihh, Sorrel and Kalakh, respectively, and it averaged 7.33, 10.63 and 12.07 days when adult females were, treated with Shihh, Sorrel and Ka­lakh, respectively, as compared with control (13.93 days). Oviposition periods were significantly shortened after eggs and adult females were treated with plant extracts, as compared with control, while egg hatcha­bility was not affected. The total number of deposited eggs per female was highly affected with plant extracts, it ranged between 5.26 and 36.27 eggs in case of eggs treated and it ranged between 3.67 and 28.60 eggs in case of adult females treated as compared with control which was 65.80 eggs.
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