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385. Anon.. Sept. 1989. A plague of pesticides?. Harrowsmith, p. 118..
Intensive applications of broad-spectrum insecticides in Wyoming have probably benefitted grasshoppers more than ranchers. Researchers compared pesticide use and grasshopper infestations in two bordering counties. Infestations were more frequent and longer lasting in one county even though the other county did more spraying. Apparently, the spraying was more damaging to predators and parasites of grasshoppers than to the grasshoppers.
10416. Smith, L. (ed.). 1991. North central Idaho county extension field crop demonstrations, 1989-1990.. ID Agr. Expt. Sta. Misc. Series 152, Moscow..
The results of numerous on-farm tests are reported. Some tests were replicated, while others were simply demonstrations. The tests were organized by county extension agents.