Metabolic fates of herbicides in animals.

Many general aspects of the subjects were covered by the two previous reviews. Important recent changes in handling harvested cereal grains include more bulk transportation--particularly containerisation,processing closer to the site of production, resistance topesticides in many granivorous insects and the alarmingly unpredictable cross-resistance spectra in some sppecies, and a hardening in the attitude of governments and the food industry to the use of pesticides. Pesticide manufacturers arecurrently restricting their involvement in the stored grain area. The market is small and unpredictable due to crossresistance. However, a number of interesting and potentially useful compounds have appeared, notable )(bio) resmethrin, pirimiphos-methyl, andDursban-methyl, which reflect attempts to provide somewhat morepersistent compounds under adverse storage conditionnnnns than ismalathion--currently the most widely-used control agent.Inevitably, there is interest also in alternative methods, of control, from the obvious physical methods (drying, cooling, air-tight storage)to use of pheromones, insect hormone anaogues, and larvicides, all of which may have some future potential...