Study on Trunk Spraying for Control of Holcocerus insularis Staudinger
- Received Date: 24/03/2022
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Key words:
- trunk spraying /
- Holcocerus insularis /
- 15% chlorofluorocarbon imidacloprid SC /
- control efficiency
Abstract: In order to effectively control Holcocerus insularis, 13 kinds of commercial pesticides were combined with ‘Pitou’ in this study and applied by tree trunk spray method to screen the best combination of control agents for the moth.The results of experiments showed that the 100×dilution of ‘Pitou’ and 15% chlorfluorinated imidacloprid suspension concentrate (SC) in a ratio of 2:1 had control efficiency of 95.94% for the larvae hatched in current year. The results of experiments with cross-year larvae showed that the 30× dilution of ‘Pitou’ and 15% chlorfluorinated imidacloprid SC with ratio of 2:1 achieved 90.13% of control efficiency. In conclusion, the 30× dilution of combined pesticides can be used to effectivelycontrol the Holcocerus insularis.
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