RSA 431:4-a: Nitrogen Content of Turf Fertilizer.

I. No turf fertilizer sold at retail shall exceed an application rate of 0.7 pounds per 1,000 square feet of soluble nitrogen per application.

II. No turf fertilizer sold at retail shall exceed an application rate of 0.9 pounds per 1,000 square feet of total nitrogen per application.

III. No turf fertilizer shall exceed an annual application rate of 3.25 pounds per 1,000 square feet of total nitrogen when applied.

IV. No enhanced efficiency fertilizer shall exceed a single application rate of 2.5 pounds per 1,000 square feet of total nitrogen and an annual application rate of 3.25 pounds per 1,000 square feet of total nitrogen nor release at greater than 0.7 pounds per 1,000 square feet per month.