The chart below, developed from results of Farm-A-Syst projects in Wisconsin, Minnesota, Arkansas, Maine and Louisiana, summarizes various water-quality hazards. "On more than 40% of the farms the petroleum storage area posed a high risk of pollution. That''s more than pesticides, fertilizer, livestock waste or any of the other potential sources," says Jackson.New reasons for concernPetroleum fuels contain several toxic compounds, including benzene, toluene and xylene -- all considered carcinogens. A gallon of spilled gasoline contains enough benzene to contaminate 2,000 cubic feet of soil or 10 million gallons of water.

"I have spent the better part of my adult life aftermarket developing and manufacturing motorized products from go-karts and lawn equipment to pressure washers," Brister said in car a May 8 letter to dealers. "Beginning with Brister''s Thunder Karts, a company started by my father in 1959, I have helped lead the karting industry from the garage-built toys of the ''60s to today''s highly engineered off-road vehicles, I take great pride in the fact that many of the designs, features and safety improvements I introduced are still used on the finest karts in the marketplace.

"Changing from conventional to an intensive grazing operation," is the biggest management change for Robert Cessac of Higbee, Missouri. "This has saved on hay and feed costs by 75%," he says. "I feed hay only from February 1 to maybe mid-March, depending on snowfall. And the cattle handle much easier and are more gentle. I can handle my cattle mostly by myself now." Even relatively low-tech grazing systems depend on good technology. High-tensile electric fence, polywire, and solar heaters electric fencers all get mention in the survey.Kim Klocke of aftermarket Arlington, Iowa, likes his IntelliShock solar electric fencer made by Premier. He has had it four years and says it operates without a hitch. Klocke runs 75 stock cows and 80 ewes on 260 acres of grass and pasture.

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