Ключевые слова: agriculture, agronomy, ancient, circle, clean, crop, cultivated, drip, ecological, energy, engineering, equipment, farm, field, grass, green, growth, harvest, industry, irrigation, land, machine, mechanical, natural, nature, old, organic, pipe, pivot, plant, power, pump, raw, resource, river, rural, soil, spray, stream, summer, supply, technology, travel, tube, valley, water, watering, waterwheel, wheel, wooden,