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

Includes bibliographical references.

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

Mode of access: Internet.

Wastes from water treatment plants : literature review, results of an Illinois survey, and effects of alum sludge application to cropland /

"SWS Contract report 429." -- Cover.