Preliminary pesticidal studies of willow bark (Salix safsaf) | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 11, Issue 1, June 2003, Pages 67-75 PDF (244 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.2003.459426 | ||
| Author | ||
| Ahmed S. AbdeI-Aty* | ||
| Department of Pesticide Chemistry. Faculty of Agriculture, Alexandria University. | ||
| Abstract | ||
| The bark of safsaf tree, willow (Salix safsaf) was collected and cut into small strips. These strips were dried and powdered, then extracted with aqueous acetone. After the complete evaporation of acetone, some fractions were separated from the resultant extract by using partitioning between different solvent systems. These fractions were tested for their phytocidal effects on wheat and squash seedlings, insecticidal effects on the rice weevil (Sitophilus oryzae) and molluscicidal effects on the terrestrial snail (Theba pisana). Fraction II, which was isolated from n-hexane layer, was found to be more active in the 'inhibition of root growth of wheat and squash seedlings with [C50's equal 170 and 230 ppm, respectively. Fraction II was effective against the rice weevil with LC50 equal 140 ppm during 2.4 days. It gave high lethal effects against the tested snail (T. pisana) with LC50 equal 56 ppm. The other tested fractions were relatively less effective. | ||
| Keywords | ||
| Pesticidal studies; willow bark (Salix safsaf) | ||
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