Investigations on the effects of two different plant extracts on the Green peach aphid [( Myzus (N.) persicae Sulzer) (Hemiptera: Aphididae)]

Authors : Pervin Erdoğan, Ayşegül Yildirim

Pages : 33-42

View : 16 | Download : 4

Publication Date : 2013-04-04

Article Type : Other

Abstract :Green peach aphid [( Myzus (N.) persicae Sulzer) (Hem.: Aphididae)] is a very important pest worldwide, causing serious damage to vegetables, flowers and fruit crops. In recent years broad spectrum insecticides have been used to control this pest in Turkey. Control is difficult mainly due to resistance to conventional pesticides. The use of plant extracts as alternative pesticides for control of insects is becoming important. A great deal of research has been carried out in this area in recent years. The efficacy of pesticides extracted from two different plants such as Hyoscyamus niger L. and Achillea wilhelmsii C. were tested as alternative insecticides. The effects of extracts with ethanol obtained from two different plants on M. (N.) persicae were investigated. Bioassays were tested by two different methods determine the effects of varying concentrations. Experiments were performed using 3cm diameter leaf disk from unsparayed Raphanus sativus L. The effects of four concentrations of extract %1, 3, 6, 12 were studied. All of experiments were repeated 10 times. As a result of the investigation, in leaf dipping method; the extract of A. wilhelmsii 12% concentration showed the highest mortality in nymph and adult stages. The mortality of nymphs and adults at the same concentrations were 83.81% and 80.00%, respectively. The mortality of nymphs and adults were 71.64 and 65.00% respectively within the same concentration extract of H. niger . There was no significant difference on the mortality between leaf dipping and direct leaf spraying method when compared.
Keywords : İnsektisit etki, Hyoscyamus niger, Achillea wilhelmsii, ekstrakt, Yeşil şeftali yaprakbiti