Efficacy of herbal extracts and synthetic compounds against strawberry thrips, Frankliniella occidentalis (Pergande) under greenhouse conditions
Gholamreza Golmohammadi and Ali Mohammadipour
The western flower thrips, Frankliniella occidentalis (Pergande), is a serious pest of greenhouse crops that has short generation and high fecundity. This experiment was conducted based on a completely randomized design with seven treatments and four replications in the greenhouses of Varamin (Tehran province) and Karaj (Alborz province). The treatments were as follows: flonicamid, dichlorvos, azadirachtin, pyrethrum and control (water spray). In Tehran, the efficacy persents, 3 days after treatment, were 82.35±3.45 (flonicamid at 300 ppm), 87.03±2.67 (dichlorvos at 1000 ppm), 69.35±3.85 (flonicamid at 250 ppm), 68.53±4.46% (flonicamid at 200 ppm), 56.95±5.27 (azadirachtin at 2500 ppm) and 55.94±4.62 (pyrethrum at 4000 ppm). Seven days after treatment, the highest and lowest efficacies were 85.75±2.17 (flonicamid 300) and 66.37±3.22 (azadirachtin). In Karaj, three days after treatment, the efficacies were 80.46±3.65 (flonicamid 300), 70.46±3.45 (flonicamid 250), 75.38±4.27 (flonicamid 200), 82.14±2.25 (dichlorvos), 61.39±3.52 (azadirachtin) and 47.42±2.14 (pyrethrum). In general, the herbal extracts and the new insecticide, flonicamid, had acceptable control against Strawberry thrips in the greenhouse.
Gholamreza Golmohammadi and Ali Mohammadipour. Efficacy of herbal extracts and synthetic compounds against strawberry thrips, Frankliniella occidentalis (Pergande) under greenhouse conditions. 2015; 3(4): 42-44.