Fertiliser usage and the mineral requirements of grazing livestock /
Hemingway, R. G.
Parkins, J. J.
International Fertiliser Society.
York, U.K. : International Fertiliser Society,
2001.
"Paper presented to the International Fertiliser Society at a Symposium in Lisbon, on 4th March 2001."
Includes bibliographical references (p. 30-36).
Nitrogen fertilizers.
Minerals in animal nutrition.
Dairy cattle