Vapormate(R) as a Quarantine Fumigant for Orange Treatment
In Korea, 10% methyl bromide(MB) has been used to the imported oranges for QPS (Quarantine and PreShipment) purpose,and amount of the consumption of MB was reached to 82t in 2007. Mandatory fumigation with MB was carried out for treatment of imported oranges(96.7% of total) in order to meet National Plant Quarantine Service (NPQS) requirement. Although MB use for soil fumigation has been decreased by year to year due to the ozone depletion issue, its use for QPS fumigation is increasing continuously because of increasing of global trades and protection of agroecosystem in imported counties against quarantine pest. Currently, as one of the potential alternatives, ethyl formate is considered to use for treatment of postharvest commodities. A cylinder formulation of 16.7% ethyl formate, named Vapormate, was developed by the Linde Group for fumigation of durable commodity. To extend the application purposes, the Linde Group and Dongbu HiTek have tested Vapormate for perishable commodity fumigation, especially for imported and exported fruits. This study was conducted to obtain the more systematic data to control different stages of two spotted mites （Tetranychus urticae Koch) and citrus mealybugs （Planococcus citri （Rossi)) in terms of estimated CT product. The L (CT) 99 values of ethyl formate were 96 and 21g · h/m3 against eggs of two spotted mites and adults of citrus mealybugs at 21±2℃,respectively. In a semifield test with Vapormate on oranges,the completed control of mites and mealybugs were achieved at 210 g/m3 for 4hr at both 5 ℃ and 17 ±2℃. In the post fumigation, the quality（loss of firmness, color change and total soluble solid)for 1,6 and 15 days at 6℃ storage was not significantly different. The final residue of applied ethyl formate was detected at the level of 0.042 ppm that is under the Maximum Residue Limits （M RLs)for dried fruits in Australia.Vapormate could play an important role to reduce MB use and to protect ozone layer as a MB replacement for QPS treatment purposes.
Bo Kyung Sung Min Goo Park Robert Ryan Yonglin Ren ByungHo Lee Tae Joon Kim
NPQS, South Korea The Linde Group CSIRO Entomology, GPO Box 1700, ACT 2601, Canberra,Australia Dongbu ARI,Dongbu IliTek,South Korea
国际会议
成都
英文
162-164
2008-09-21（万方平台首次上网日期，不代表论文的发表时间）