Document Type

Thesis - Open Access

Award Date

1957

Degree Name

Master of Science (MS)

Department

Agronomy

Abstract

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

Fertilizers
Manures

Format

application/pdf

Number of Pages

47

Publisher

South Dakota State University

Rights

No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/

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