Ethyl formate (EF) fumigation under green house condition is a new concept. Its concentrations inside and surrounding of the glass house (GH) and vinyl house (VH) were evaluated for 4 h (during daytime) and 12 h (during nighttime) after fumigation along with the evaluation of post-fumigation EF concentrations. The cumulative EF concentration × time (Ct) value of the 6 sampling positions in VH were 22.67 and 17.53 g·h/m3, respectively for day and night fumigation, which were 2.62 and 4.53 g·h/m3 respectively for day and night application in GH. The EF level (PPM) outside the VH and GH as well as after 20-min post fumigation were < 50 ppm revealing its safety level as its’ threshold limit value (TLV) is 100 ppm. The new technology using liquid EF fomulation could be a key option in smart-farm technologies in future. (Supported by PJ0133562018, RDA)

• Tae Hyung Kwon(Division of Applied Life Science (BK21+ Program), Institute of Agriculture and Life Science, Gyeongsang National University, Korea, Safefume Inc. Korea)
• Byung-Ho Lee(USDA-ARS, Pacific Basin Agricultural Research Center, Hilo, USA)
• Seung-Hwan Ji(Safefume Inc. Korea)
• Hei-Geun Kim(Safefume Inc. Korea)
• In-Hong Jeong(RDA National Institute of Agriculture Science, Wanju, Korea)
• Chung Gyoo Park(Division of Applied Life Science (BK21+ Program), Institute of Agriculture and Life Science, Gyeongsang National University, Korea,)