The wind drew unusual amounts of dust into the air this time, though, and farmers soon understood that this was a result of their land cultivation. Not only were millions of acres under cultivation, but the pull of demand and the development of new agricultural machines also meant they had been cultivated in a different way. Traditional horse-drawn plows had dug deep into the earth, turning large, heavy sods in their entirety, like a blanket on a bed. The modern “sodbusters” were faster and considerably more efficient. Each tractor could pull several rows of disks that cut into the soil
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