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Journal of Sugar Beet Research - Vol

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January - June 2008 <strong>Sugar</strong>beet Response to Nitrogen 29<br />

U.S. Department <strong>of</strong> Agriculture. 1991. Nitrate occurrence in U.S. waters<br />

(and related questions). A reference summary <strong>of</strong> published<br />

sources from an agricultural perspective, Washington, D.C.<br />

U.S. Environmental Protection Agency. 1973. Water Quality Criteria.<br />

U.S. Govt. Printing Office, Washington, D.C.<br />

Winter, S. 1988. Influence <strong>of</strong> seasonal irrigation amount on sugarbeet<br />

yield and quality. J. <strong>Sugar</strong> <strong>Beet</strong> Res. 25:1-10.<br />

Winter, S. 1990. <strong>Sugar</strong>beet response to nitrogen as affected by seasonal<br />

irrigation. Agron. J. 82:984-988.

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