Ethyl formate (EF), a methyl bromide alternative fumigant which is commercially used for quarantine and pre-shipment(QPS) purpose, has a potential to control various insect pests. Based on CTP (concentration × time products), we've firstly evaluated fumigation trials of EF on cucumber plants to eradicate horticultural insect pests in greenhouse. In the preliminary test, EF achieved 100% control of cotton aphid, western flower thrip and tobacco whitefly when CTP of EF was 4.4, 5.6 and 3.3 g h m-3, respectively. In 1300m3 scale cucumber greenhouse trial, EF was applied with 2g m-3 dosage for 15 hrs, and cotton aphid, western flower thrip and tobacco whitefly were completely controlled without phytotoxic symptom. EF fumigation could be suitable for greenhouse cultivation in terms of good efficacy on horticultural insect pests with labor-saving benefit than current insecticide spraying applications.

• Bong-Su Kim(Plant Protection R&D Center, Farm Hannong Co. Ltd)
• Jin-Hoon Cho(Plant Protection R&D Center, Farm Hannong Co. Ltd)
• Jeong-Oh Yang(Animal and Plant Quarantine Agency)
• Min-Su Kim(Department of Horticultural Science, Kongju National University)
• Han-Young Lee(Plant Protection R&D Center, Farm Hannong Co. Ltd)