1. Methods of pest control
... sign of organophosphate poisoning. • In Venezuela, 10,300 cases of poisoning with 576 deaths occurred between 1980 and 1990. • In Brazil, 28 per cent of farmers in Santa Catarina state say they have been poisoned at least once and in Parana state some 7,800 people were poisoned between 1982 and 1992. • In Egypt, more than 50 per ... Many pesticides enter aquatic sediments where they can persist for long periods of time. Populations of aquatic insects, an important food source for fish, have been drastically reduced after forest and agricultural spraying. Under some conditions, the...
- Word Count: 2580
- Approx Pages: 10
- Grade Level: Undergraduate