A Competitive assessment of the U.S. nitrogen fertilizer industry /

"October 1986."

Response of ironweed and buckbrush to herbicides and to herbicides in combination with mowing, nitrogen fertilizer, and surfactants

Cooperating agency: Missouri Agricultural Experiment Station.

A method of economic analysis applied to nitrogen fertilizer rate experiments on irrigated corn /

Literature cited: p. 62-63.

Response of millet to nitrogen and irrigation; an application of simulation to the problem of weather uncertainty,

Mode of access: Internet.

Fertilizer application rates and nitrate concentrations in Illinois surface waters : a report to the Illinois Institute for Environmental Quality /

Includes bibliographical references.