EFFECT OF ETHYL FORMATE, CARBON DIOXIDE AND 1-METHYLCYCLOPROPENE FUMIGATION ON INSECT DISINFESTATION AND QUALITY OF LONGKONG
Insects hiding in longkong (Aglaia dookoo Griff.) clusters cause a serious problem in exporting the fruit. An experiment was conducted to control insects in longkong by fumigating the fruit harvested at 13 weeks after full bloom with ethyl formate at 0, 25, 50, 75 and 100 g/m3 for 6 h. The result showed that ethyl formate at 75 g/m3 for 6 h completely eradicated black ants (Technomyrmex sp.) and mealybug (Exallomochlus hispidus (Morrison)). CO2 fumigation at 0, 25, 50, 75 and 100% for 6 h were also tested. It was found that at 50-100% CO2, black ants were disinfested by 80-90%, while mealybugs were disinfested by only 6%. Fumigation with ethyl formate at 25 g/m3 in combination with 50% CO2 was found to completely eradicate black ants and mealybugs. However, the combined treatment reduced the effect of 1-MCP in controlling postharvest fruit abscission.
Pannasee, S., Pluemjit, O. and Siriphanich, J. (2015). EFFECT OF ETHYL FORMATE, CARBON DIOXIDE AND 1-METHYLCYCLOPROPENE FUMIGATION ON INSECT DISINFESTATION AND QUALITY OF LONGKONG. Acta Hortic. 1088, 325-328
carbon dioxide, ethyl formate, 1-MCP, mortality, black ant, mealybug