Effect of chlorantraniliprole, Flubendiamide, and Indoxacarb against tomato leaf miner, and side effects of chlorantraniliprole on the parasitoid wasp, Trichogramma brassicae

Tomato leafminer is one of the most important pests of this crop in Iran. The objective of this study was to introduce and replace new insecticides and to increase the range of effective insecticides in pest control. The experiment was conducted as a randomized complete block design with five treatments in two tomato greenhouses in Ardabil and West Azarbaijan provinces. The experimental treatments included two doses of Chlorantraniliprole, (0.2 g/lit and 0.15g/lit) Flubendiamide (0.3/1000 g/lit), Indoxacarb (0.3/1000ml/lit) and Control. The live larvae were sampled before and after spraying. Ten days after the last sampling, 20 fruits were randomly selected from each replicate and the percentage of infected tomato fruit was determined. Additionally, the side effects of Chlorantraniliprole on the parasitoid wasp Trichogramma brassicae were investigated in laboratory conditions. The results showed that the treatment of Chlorantraniliprole 0.2/1000, fourteen days after spraying in West Azarbaijan province with 84.44% and in Ardabil province with 88.25% efficiency was most effective in controlling tomato leafminer. In the two provinces of West Azarbaijan and Ardabil, Chlorantraniliprole 0.2/1000 1, with 1.66 and 10.00 percent, respectively, had the lowest number of infected fruits among the treatments. Moreover, the application of Chlorantraniliprole at 0.2 /1000 and 0.15 /1000 reduced the emergence of adult Trichogramma parasitoids by 49.87 ± 4.3% and 21.27 ± 2.4%, respectively, compared with the control. According to the obtained results Chlorantraniliprole at 0.15 /1000 is recommended for use in the management programs of this pest.