Ключевые слова: aerial, agricultural, agriculture, aircraft, airplane, aviation, biplane, corn, crop, dangerous, dust, duster, dusting, ecology, environment, fertilizer, field, fly, flying, fungicide, green, herbicide, insecticide, iowa, low, over, pesticide, pesticides, pilot, plane, professional, rural, sky, soy beans, spray, sprayer, spraying, vegitation, work, yellow,