Abstract

The experiment was conducted to evaluate the efficiency of some vegetable oils such as watercress oil, aloe vera oil and eucalyptus oil in the percentage of nymphs of black broad bean Aphis fabae Scopoli on the chard plant Beta vulgaris subbsp. cicla. The mortality rate was 83.88, 90.56, and 93.89 % for oils used in the laboratory, while the percentage of loss in the field was 82.91. 88.19 and 89.86%, respectively, the results showed that vegetable oils had an effect on the destruction of whole black broad bean insects, and the increase of this effect with the increase of the time and concentration factor. Keywords: Aphis fabae; Plant oils; Biological fungi

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