In pesticide registration, the most of applicants are manufacturing companies which have richly experience in applying registration. With their experience, registration applications of pesticide shows excellent ratio of pass, but still some of application still fail to pass, and are judged as disqualifications or to be returned for supplement. In 2009, There were 6 items failed in registrational reviews. Two of them were for their active ingredient contents lower than specifications, Other two were for trials conducted wrong, so sent back to applicants to add supplement. But the rest of them, two items showed low efficiency in one trial, and were judged as disqualifications, which mean that ingredient cannot be registered for that target crop forever. Disqualification from low efficiency has highly strict criterion and usually don't have any flexibility to lower efficiency than criteria, unless there was no pesticide available for that pest. The way to remedy this criterion is very delicate and controversial issue, and needs more reconciliation of various views.

• Sungwoo Kim(Pesticide Safety Division, National Institute of Agricultural Science & technology)
• Young-lim Kim(Pesticide Safety Division, National Institute of Agricultural Science & technology)
• In-Young Lee(Pesticide Safety Division, National Institute of Agricultural Science & technology)
• Jae-eup Park(Pesticide Safety Division, National Institute of Agricultural Science & technology)