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IR-4: Minor Use Registration

The IR-4 (Interregional Research Project No.4) program is involved in making sure that pesticides are registered for use on minor crops. Minor use pesticides are those that produce relatively little revenue for their manufacturers, for a variety of reasons. They may be registered for a seldom seen pest, or or for a crop that is not grown by a large number of producers. However, minor crops include some high revenue fruit, vegetable, and ornamental crops. IR-4 helps by conducting research on minor use pesticides, pesticides that would not otherwise be profitable to manufacture.