Experimental Analysis of the Control of Cherry Spider Mites Using Spirodiclofen and Pyridaben

Release Date:

2019-01-21

To address the current situation in which no registered pesticides are available for cherry, a minor specialty crop, the Shandong Provincial Pesticide Testing Institute and the Shandong Fruit Tree Research Institute jointly conducted laboratory bioassays, safety evaluations, and field efficacy trials of a 240 g/L spirotetramat suspension concentrate and a 15% pyridaben emulsifiable concentrate for controlling cherry red spider mites. Experimental Analysis of Spirotetramat and Pyridaben for Controlling Cherry Red Spider Mites The results of the laboratory bioassays indicated that spirotetramat exhibits high activity against cherry red spider mite eggs and nymphs, with LC50 values of 0.98 a.i. mg/L and 25.91 a.i. mg/L, respectively; pyridaben demonstrated strong activity against adult cherry red spider mites, with an LC…

　　To address the current situation in which no registered pesticides are available for cherry, a specialty small‑scale crop, Shandong Province… Pesticide The Testing Institute and the Shandong Provincial Fruit Tree Research Institute jointly conducted laboratory bioassays, safety evaluations, and field efficacy trials of a 240 g/L spirotetramat suspension concentrate and a 15% pyridaben emulsifiable concentrate for the control of cherry red spider mites.
　　Experimental Analysis of the Control of Cherry Spider Mites Using Spirodiclofen and Pyridaben
　　Results of the laboratory bioassay indicated that spirodiclofen exhibits high efficacy against eggs and nymphs of the cherry red spider mite, with LC50 values of 0.98 a.i. mg/L and 25.91 a.i. mg/L, respectively. Pyridaben demonstrated good activity against adult cherry red spider mites, with an LC50 of 43.56 a.i. mg/L. The safety assessment revealed that both the 240 g/L spirodiclofen suspension concentrate and the 15% pyridaben emulsifiable concentrate are safe for cherry trees at their recommended field application rates, with a safety margin of 400%. Field efficacy trials further showed that, at their respective recommended field doses, the 240 g/L spirodiclofen suspension concentrate and the 15% pyridaben emulsifiable concentrate provide excellent control, achieving approximately 90% control and exhibiting favorable residual activity.
　　Researchers have indicated that a 240 g/L spirotetramat suspension concentrate and a 15% pyridaben emulsifiable concentrate can serve as safe and effective formulations for controlling cherry red spider mites. Based on the severity of infestation, it is recommended to apply the 240 g/L spirotetramat suspension at a dilution of 4,000–6,000 times and the 15% pyridaben emulsifiable concentrate at a dilution of 1,500–2,500 times.
　　As of the end of 2018, China had not yet approved any insecticide or acaricide products for use on cherries. The only fungicide authorized was an 80% sulfur wettable powder produced by Shouguang Xinlong Bioengineering Co., Ltd., intended for the control of cherry brown spot; the recommended application rate is a 1,000–2,000-fold dilution.

Author: Pesticide Market Information Editor: xwbj1

Tags:

Major Developments in Global Pesticide Regulations in 2018

Key Details to Note When Applying for Pesticide Registration Renewal

More information

The National Agricultural Technology Center has issued guidelines on “one spray, three protections” for wheat to address the heightened risk of recurrent outbreaks of Fusarium head blight, stripe rust, and aphids.

2026-04-10

The petrochemical and chemical industries comprise more than 27,000 large-scale production enterprises—efforts to upgrade and retrofit aging facilities are being further intensified.

2026-04-06

In 2026, corn borer, cotton bollworm, and ear rot—among other corn pests and diseases—are expected to occur at a relatively severe level. The National Agricultural Technology Center has issued a control plan!

2026-04-02

Address: