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PRELIMINARY RESULTS ON THE EFFICACY OF SOME ORGANIC INSECTICIDES AGAINST APHIDS TO EUROPEAN PLUM

Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Claudiu MOLDOVAN, Ioan ZAGRAI, Luminița ZAGRAI, Aurel MAXIM

The use of ecological treatments in the prevention and control of diseases and pests for fruit trees is increasing. Thus, more and more orchards are established on an ecological system in order to obtain crops with no pesticide residues after harvesting. There are few organic insecticides on the market and their effectiveness is not fully known. This situation creates difficulties for those who choose such crops, assuming practically the risk of potential inefficient control of the main diseases and pests. In this experiment, the effectiveness of several organic insecticides was studied against one of the main plum pests, the aphids respectively. The tests were performed both in the field and under laboratory conditions, on shoots heavily populated by aphids. The treatments were applied by spraying the whole surface of the shoots. The preliminary results obtained after 48 hours highlited two organic insecticides, Ovipron Top and Prev-Am, that had an efficiency of over 90%, and 70%, respectively at the concentrations recommended by the manufacturer.

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