Evaluation of the efficacy of some insecticides against Arboridia kermanshah in Yaghooti grape in the Sistan region
Grape leafhopper, Arboridia kermanshah is one of the important pests of vineyards in Sistan region, which weakens the trees and reduces the quality and quantity of grape production by laying eggs in the leaf tissue, and feeding on leaves and transmission of viral pathogens. During the recent years, grape leafhopper populations have increased sharply in vineyards in Sistan region. This study was conducted in 2019-2020, to evaluate the effect of some insecticides on grape leafhopper by spraying on the grape foliage. The studied insecticides were Thiamethoxam (Actara WG 25%), Thiaclopride(Biscaya OD 24%), Spirotetramat(Movento SC 10%), Imidacloprid(Confidor SC 35%), Fipronil(SC 5%), Chlorfluazuron(Atabron EC 50%) and Control. The insecticide efficacy, seven days after spraying in the first and second years were 100 and 90.10% for Thiamethoxam, 99.33 and 91.06% for Thiaclopride, 99.74 and 71.97% for Spirotetramat 0.75ml/lit, 99.79 and 83.14% for Spirotetramat 1ml/lit, 95.63 and 97.56% for Imidacloprid, 84.22 and 71.97% for Fipronil, 84.13 and 66.84% for Chlorfluazuron respectively. Fipronil and Chlorfluazuron had less effective on this pest compared to other treatments. In general, Thiamethoxam, Thiaclopride, Spirotetramat, Imidacloprid are suitable candidates for controlling grape leafhopper.
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