Ключевые слова: agriculture, blue, center pivot, corn, country, crop, cultivate sprinkler, ecology, environment, equipment, farming, farmland, fertilizer, field, flowing, food, green, grow, growing, growth, industrial, industry, irrigate, irrigated, irrigation, landscape, liquid, machine, natural, nozzles, outdoor, pipe, pipeline, pivot, plant, plantation, pollution, pour, pump, repetition, resource, rows, runoff, rural, spray, sprinkler, sprinkling, supply, system, water, watering, wheat, wheel,