A Comparison Between Laboratory Nitrogen Determinations and the Response of Oats to Nitrogen Fertilization in South Dakota
Thesis - Open Access
Master of Science (MS)
Department / School
Nitrogen, of all the soil derived nutrients, is the element most commonly deficient in Chernozem and Chestnut soils. Nitrogen bearing commercial fertilizer, therefore, is required for maximum crop yields on nearly all Midwestern farms where these soils occur. For the most economical use of fertilizers it is desirable to have the soil tested in the laboratory to determine the correct analysis and rate of fertilizer to be applied. Reasonably accurate tests for measuring the amount of phosphorus and potassium available to plants have been in common use for many years. Extensive investigation has gone into the development of an equally satisfactory laboratory test for available nitrogen. The experimental work reported in this thesis is an attempt to show the relationship between the nitrifying ability of a soil and the degree to which oats responds to commercial nitrogen fertilizer in South Dakota.
Library of Congress Subject Headings
Number of Pages
South Dakota State University
No Copyright - Non-Commercial Use Only
Harpstead, Milo I., "A Comparison Between Laboratory Nitrogen Determinations and the Response of Oats to Nitrogen Fertilization in South Dakota" (1957). Electronic Theses and Dissertations. 2389.