this citation summarizes a one-page announcement of technology available for utilization. many farm crops, from lettuce to winter wheat, do not appear to suffer under acid rain, according to research at the ars air quality-plant growth and development laboratory in raleigh, north carolina. botanist denis t. dubay, plant pathologist allen s. heagle, and plant physiologist walter w. heck exposed 216 varieties of 18 crops to simulated rain many times more acidic than what now falls in the eastern united states. the simulated acid rain caused no significant injury, nor did it reduce growth in most species. tomatoes, eggplant, snapbeans, cotton, peanuts, and soybeans were the only crops whose leaves showed damage of more than 5 percent after the 1-hr exposure. the most sensitive variety of tomato had as much as 24 percent of its leaf area damaged by the single exposure injured leaves had small bleached or burned spots, usually where water droplets had remained on the leaves for an extended time or where a large volume of water had flowed over the surface. at the other end of the scale, potatoes, corn, lettuce, winter wheat, orchardgrass, melons, fescue, cucumbers, alfalfa, clover, and squash all had less than 2-percent leaf damage