English to Italian Other Agriculture

Y.Y., owner/operator of Y.Y Farming, grows wheat, barley, canola and peas on approximately 2,400 hectares in the XXX area of South Australia. With three New Holland tractors and a New Holland combine, Y. likes to say, “We’re a bit blue.” Y. is a big user of GPS systems, having “a couple of X20 consoles, a System 350 with the new X30 console and a System 150.” Y. said, “We use GPS for all of our seeding and spraying, plus for contract work and that includes autosteering on all of our tractors and the combine. We also use it for boom spray rate control.”

Non capisco assolutamente cosa sia il "boom spray"