The Effect of Palizin, Tondexir and Pymetrozine on The Green Cotton Aphid Aphis gossypii

Moghadam, M., B. Amiri-Besheli and M. Sharifi. 2022. The Effect of Palizin, Tondexir and Pymetrozine on The Green Cotton Aphid Aphis gossypii. Arab Journal of Plant Protection, 40(4): 340-345. https://doi.org/10.22268/AJPP-40.4.340345 The aim of this study was to evaluate the effect of plant-based pesticides on the green aphid A. gossypii and also investigating the effect of adding citral oil to the plant pesticides. To carry out experiments on A. gossypii in nymph and adult stages, young soybean leaves of DPX cultivar were used (Katoul). For bioassay, first, the bulk solution was prepared and then, other concentrations (eight concentrations for each insecticide) were prepared and used. The results of this study showed that the palizin insecticide with citral oil at LC50 of 359.669 ml/l had the greatest effect on nymphs in-vitro, but when the same nymph stage was evaluated under greenhouse conditions, the highest efficacy was obtained with the mixture of pymetrozine and citral oil with LC50 of 295.242 ml/L. In the experiments performed on the adult stage under both greenhouse and laboratory conditions, the most desirable treatment was that of the mixture of herbal insecticide palizin and citral oil, and the LC50 obtained was 807.88 and 1249.14 ml/L under laboratory and greenhouse conditions, respectively. Keywords: Palizin, pymetrozine, tondexir, citral oil, cotton green aphid.