Ключевые слова: agricultural, agriculture, big, chemical, clearance, country, countryside, crop, dakota, equipment, farm, farmer, farming, fertilize, fertilizer, field, hdr, high, industry, insecticide, landscape, machine, machinery, man, montana, north, person, pesticide, pesticides, prairie, rural, safety, saskatchewan, spray, sprayer, spraying, tall, tire, toxic, tractor, walker, water, weed, work, worker,