Growers of some horticultural crops suffer from a lack of legal access to crop protection products (pesticides). The problem may be that while a relatively small crop area is valuable in an agricultural sense, it is not of sufficient size for AgChem companies to justify the expense of registering a product to use on that crop. Alternately, the disease, pest, or weed problem may be regional or spasmodic, making AgChem companies unwilling to bear the initial high cost of registering suitable pesticides.

Vegetable agrichemical pest management needs & priorities