Efficiency of Spiromesifen and Cyflumetofen for control of European red mite in apple orchards of some provinces in Iran
2021
Rezaie, Maryam | Emami, Mohammad Saeed | Frozan, Maryam | Shirdel, Davod | Kamalie, Hashem
Abstract The European red mite, Panonychus ulmi is one of the most important pests of apple orchards in some parts of Iran. This study was conducted in order to evaluate the efficiency of Spiromesifen and Cyflumetofen for the control of European red mite in apple orchards of Isfahan, East, West Azerbaijan and Khorasan-e Razavi provinces of Iran. Towards this aim, two concentrations of Spiromesifen 24% SC (0.5 and 0.4 ml/l) and Cyflumetofen 20% SC (1 and 0.8 ml/l) were compared with Etoxazole 10% SC 0.4 ml/l, Propargite 57% EC 1 ml/l, Fenpyroximate 0.5 ml/L, Spriodiclofen 0.5 ml/l and control (water sprayed). The percentage of efficiency was calculated by the Henderson-Tilton formula. The average number of mites per leaf was counted one day before and 3, 7, 14, 21 and 28 days after spraying. Statistical analysis was conducted using SAS software with randomized complete block design in multiple places. Cyflumetofen was effective on European red mites in apple orchards of the above-mentioned provinces. Spiromesifen was effective; expect in Khorasan-e Razavi provinces. Although in this province, its efficacy increased by increasing time after treatment. The knock down effect of these pesticides was significant. After 3 days, Spiromesifen and Cyflumetofen had caused 88–99% and 58–99% of mortality respectively. The efficacy of the compound was up to 99% for Spiromesifen and Cyflumetofen after 28 days that indicated the persistence of these pesticides. We recommend the 0.8 ml/lit dose of Cyflumetofen and 0.4 ml/lit dose of Spiromesifen for the control of the European red mite in apple orchards.
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Эту запись предоставил University of Tabriz