Even if you've already responded to the U.S. Census, you may be receiving a phone call, letter or visit from another census taker—the U.S. Department of Agriculture's National Agricultural Statistics Service.

The agency has begun asking farmers what types of crops or animals they produce, how much ground they farm, how much cash they spend and the value of product sold.

The questions are all part of the national ag census, which is conducted every five years.

The information gleaned will be used to guide U.S. farm programs.

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