Research has demonstrated large increases in days of grazing, annual gain, or milk production per acre by fertilizing low yielding pastures. This publication addresses grass pasture fertilization rates, timing, and soil quality, including: types of nitrogen; nitrogen rates, response, and profits; and phosphorous and potassium (P-K) rates for legume-grass pastures.
Iowa State University Extension and Outreach
- Pasture and Forage
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Stephen K. Barnhart, Antonio P. Mallarino and John E. Sawyer. "Fertilizing Pasture" Ames, IA, United States(2013)
Available at: http://works.bepress.com/john-sawyer/6/