Abstract
Decision making for pesticide registration was discussed from a point of view of minor crops problem. Agricultural Chemicals Regulation Law was revised in 2002, and the penal regulation to the user of unregistered pesticides was introduced. Then, the problem that there was no registered pesticide for minor clops such as Wasabi occurred. This minor crops problem was caused by that pesticide manufacturers were not able to recover the costs of several tests required for registration due to the small market of minor crops pesticides. In this case, progress in risk assessment was insufficient to solve the problem, because cost of pesticide registration caused the problem. Therefore, assessment of health risk as well as socio-economic effect was thought to be essential for better decision-making.
