Besides some commonsense pointers, this maintenance plan offers advice not often heard. Center pivot systems don't get any respect. Farmers who fawn over their planters, tractors, or com-bines have a bad tendency to overlook pivots when it comes to preseason maintenance, which is a testimony to these machines' durability. Still, some basic maintenance goes a long way to prevent a system from breaking down in the middle of the hottest day of the year. Component wear happens, too, resulting in less uniform water application as well as increased energy use, observes Bill Kranz of the University of Nebraska.
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