Crop groupings: A survey of its possibilities for deltamethrin registrations

Available data on deltamethrin from residue experiments on 57 different crops were compared, to assess their value for a crop grouping scheme. The results of this survey indicate that there is a sound basis for using a crop grouping procedure for the purpose of obtaining an official registration permit for the use of a pesticide on an agricultural crop. The procedure would eliminate endless duplicative efforts which are now required to obtain registration privileges.