EFFECT OF DIFFERENT CONCENTRATIONS OF SOME PLANT EXTRACTS ON THE KILLING OF GREEN PEACH, MYZUS PERSICAE

The study was conducted for the period 10/15/2021 until 12/15/2021, where different concentrations (1, 1.5, 2%) of alcoholic extracts (ethanol) of wormwood were targeted during the period of decimation of nymphs and adults. Where the results showed the effect of the organic extracts (ethanol and hexane) of the wormwood plant, which showed effectiveness in controlling insect nymphs of green peach in the laboratory, which showed significant differences between the concentrations of the extracts and the comparison treatment. The mortality rate increased with the increase in the concentrations of the extracts, as well as the death rate increased with the increase in the time period. The mortality rate at concentration 2 mg/ml reached 33.33 and 33.33 after 24 hours for nymphs, compared with 0.00% in the comparison treatment, reaching 40.33 and 39.33, respectively, after 72 hours for nymphs. For the same concentration, 2 mg/ml, but after 167, it gave the lowest killing rate for the nymphs at the same concentrations of 6.67 and 6.67 for each of the nymphs. It was also noted from the results that there were slight significant differences between the types of extracts, concentrations and time period, by the superiority of hexane extract and ethanol alcohol. It showed significant differences between the concentrations of the extracts and the comparison treatment. The mortality rate increased with the increase in the concentrations of the extracts, as well as the death rate increased with the increase in the time period. The mortality rate at the concentration was 2 mg / ml, which gave a killing rate of 30.00 and 30.00% after 24 hours for the adults treated with ethanol and hexane compared with 0.00% in the comparison treatment, and for the same The concentration is 2 mg/ml. As for the adults, it gave a killing rate of the same concentration and extracts 37.33 and 38.33% after 72 hours, but after 167 it gave the lowest killing rate of 3.33 and 6.73 compared with the control treatment that gave a killing rate of 0.00.