N.H. Rev. Stat. Ann. § 432:2

In order to carry out the purposes of the Soil Conservation and Domestic Allotment Act enacted by the Congress of the United States, the department of agriculture, markets, and food of the state of New Hampshire is hereby designated as the agency of the state of New Hampshire to administer any state plan authorized under this subdivision which shall be approved by the Secretary of Agriculture of the United States for the state of New Hampshire pursuant to the provisions of said Soil Conservation and Domestic Allotment Act.