Effect on honey bees of diazinon and phenthoate applied as sprays to white clover (Trifolium repensL.)

Abstract
Diazinon, applied at the rate of 1 Ib active ingredient per acre, and phenthoate (94-96% pure), applied at the rate of 1.251b active ingredient per acre, to flowering crops of white clover (Trifolium repens L.), proved highly toxic to honey bees.