Date of Award

2013

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Soil Science

Department

Soil Science

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Goos, R. Jay

Description

Commercial iron ethylene diamine di(hydroxyl phenyl acetic acid) (FeEDDHA) fertilizers containing the same Fe percent and applied at the same FeEDDHA rate control Fe deficiency chlorosis (IDC) differently due to differing ortho, ortho FeEDDHA (o,o-FeEDDHA) concentrations. This study: 1) determined the effect of o,o-FeEDDHA concentration on controlling IDC in soybeans (Glycine max L. Merr.); and 2) developed a soil-stability test using a simple colorimetric analysis method to determine the relative quality of soil-applied FeEDDHA fertilizers. A greenhouse experiment was conducted where nine FeEDDHA fertilizers were applied at two FeEDDHA rates. The soil-stability test compared these fertilizers with two incubation methods which utilized three soils and four incubation times, and extracts were analyzed by two methods. The results of these experiments suggest that soil-applied FeEDDHA fertilizer quality is contingent upon its o,o-FeEDDHA concentration, and the fertilizer quality can be determined by a soil-stability test with a colorimetric analysis method.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Handle Identifier

https://hdl.handle.net/10365/27101

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