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Toxicity and repelency of Trigollella foenum L. and Curcuma longa L. extracts to Sitophilus oryzae (L.) and Rlzizopertlza domillica (Fab.) (Coleoptera) [electronic resource].

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Matter, M. M

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Language: English Summary language: Arabic Description: p.149-154Other title:

التأثير السام والطارد لمستخلصات نبات الحلبة وريزومات الكركم على سوسة الأرز وثاقبة الحبوب الصغرى [Added title page title]

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Egyptian journal of biological pest control, 2008 v. 18 (1) [electronic resource]:

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In: Egyptian Journal of Biological Pest Control 2008.v.18(1)Summary: Different extracts of fenugreek (Trigonella foenum - graecum L.) and Rhizomes of CurCuma longa L. (turmeric) extracts were tested in the laboratory for their toxicity, reduction of FI progeny and repellency effects against adults of the grain stored insects Sitophilus oryzae (L.) and Rhizopertha dominica (F.). Data showed that surface treatment of wheat seeds with acetone and chloroform extracts of T. foenum at the 4% concentration level caused 72.2 & 71.2% mortality of S. olyzae adults after 14 days, respectively. On the other hand, at the same concentration, all tested extracts of T. foenum showed various toxicities to R. dOlllinica adults. Acetone extract scored the most efficient extract as it gave 83.3% mortality. Data showed that surface treatment of wheat seeds with extracts of C. longa were not effective in causing mortalities among adults of S. oryzae except petroleum ether extract which gave low mortality percentage (20.4%) at 4.0'lr.• concentration. Also, the same extract concentration gave highest effect (90.8%) against adults of R. dominica. Regarding the latent effect, acetone, petroleum ether and chloroform extracts of T. foenum reduced significantly the FI progeny of S. or)':ae. The reductions reached (100, 85.9 and 84.0%) at 4.0% concentration level, respectively. The corresponding reductions in case of R. dominica were 90.7, 66.7 and 68.4%. Petroleum ether and diethyl ether extracts of C. longa showed noticeable reduction in FI progeny of S. oryzae especially at the high concentration level (4.0%) being (36.0 and 33.6 %), respectively, while all extracts of C. longa except diethyl ether extract showed obvious reductions in FI progeny of R. dominica. Petroleum ether extract gave complete protection while acetone extract gave 85% reduction in FI progeny. Diethyl ether extract of T. foenum and petroleum ether of C. longa at (4.0'lr) concentration level scored the best repellent ones causing 98.3 and 73.3 % repellency, respectively, on the second day post-treatment of adults of R. dominica.

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Different extracts of fenugreek (Trigonella foenum - graecum L.) and Rhizomes of CurCuma longa L. (turmeric) extracts were tested in the laboratory for their toxicity, reduction of FI progeny and repellency effects against adults of the grain stored insects Sitophilus oryzae (L.) and Rhizopertha dominica (F.). Data showed that surface treatment of wheat seeds with acetone and chloroform extracts of T. foenum at the 4% concentration level caused 72.2 & 71.2% mortality of S. olyzae adults after 14 days, respectively. On the other hand, at the same concentration, all tested extracts of T. foenum showed various toxicities to R. dOlllinica adults. Acetone extract scored the most efficient extract as it gave 83.3% mortality. Data showed that surface treatment of wheat seeds with extracts of C. longa were not effective in causing mortalities among adults of S. oryzae except petroleum ether extract which gave low mortality percentage (20.4%) at 4.0'lr.• concentration. Also, the same extract concentration gave highest effect (90.8%) against adults of R. dominica. Regarding the latent effect, acetone, petroleum ether and chloroform extracts of T. foenum reduced significantly the FI progeny of S. or)':ae. The reductions reached (100, 85.9 and 84.0%) at 4.0% concentration level, respectively. The corresponding reductions in case of R. dominica were 90.7, 66.7 and 68.4%. Petroleum ether and diethyl ether extracts of C. longa showed noticeable reduction in FI progeny of S. oryzae especially at the high concentration level (4.0%) being (36.0 and 33.6 %), respectively, while all extracts of C. longa except diethyl ether extract showed obvious reductions in FI progeny of R. dominica. Petroleum ether extract gave complete protection while acetone extract gave 85% reduction in FI progeny. Diethyl ether extract of T. foenum and petroleum ether of C. longa at (4.0'lr) concentration level scored the best repellent ones causing 98.3 and 73.3 % repellency, respectively, on the second day post-treatment of adults of R. dominica.

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