TY - JOUR N2 - Aphids are one of the most important economic pests and vectors of viral diseases in crops. Brevicoryne brassicae L., one of the most serious aphid pests in Brassicaceae, if not controlled, often reaches very high densities. The present study compared the systemic effects of ethanolic, methanolic and aqueous Melia azedarach L., Peganum harmala L., Calendula officinalis L. and Otostegia persica Boissier extracts with two systemic pesticides, acetamiprid and pirimicarb (at the maximum label-recommended rate). Population growth percentages of B. brassicae through leaf spraying under greenhouse conditions were assessed. The chemicals were sprayed on one of the leaves in greenhouse condition. The results indicated that all the plant extracts have systemic effects at different levels. Among different extracts, O. persica ethanolic extract, P. harmala methanolic extract and M. azedarach aqueous extract resulted in a reduction of the B. brassicae population. L1 - http://www.journals.pan.pl/Content/107183/PDF/AO6_JPPR_58_3_Shafiei.pdf L2 - http://www.journals.pan.pl/Content/107183 PY - 2018 IS - No 3 EP - 257–264 DO - 10.24425/122942 KW - acetamiprid KW - cabbage aphid KW - pirimicarb KW - plant-derived chemicals KW - systemic toxicity A1 - Shafiei, Fatemeh A1 - Ahmadi, Kamal A1 - Asadi, Mahdieh PB - Committee of Plant Protection PAS PB - Institute of Plant Protection – National Research Institute VL - vol. 58 DA - 2018.10.31 T1 - Evaluation of systemic effects of four plant extracts compared with two systemic pesticides, acetamiprid and pirimicarb through leaf spraying against Brevicoryne brassicae L. (Hemiptera: Aphididae) SP - 257–264 UR - http://www.journals.pan.pl/dlibra/publication/edition/107183 T2 - Journal of Plant Protection Research ER -