DES MOINES, Iowa (AP) — Iowa farmers using irrigation for crops are getting a survey in the mail from the U.S. Department of Agriculture about their water use and irrigation practices. The USDA says the survey will provide the only comprehensive information on irrigation activities and water use by Iowa producers. The agency says in a statement released Tuesday the information gathered will help in the development of improved technology, better equipment and more efficient water use practices.

The survey also will include an additional focus on nursery and horticultural operations. Surveys were mailed early this month to 625 producers who indicated they used irrigation in the 2012 Census of Agriculture. Responses are due back by Feb. 10.