Persistent Link:
http://hdl.handle.net/10150/191554
Title:
Urea leaching in a sandy soil.
Author:
Spiro, David Alan,1933-
Issue Date:
1972
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
An experiment was developed to provide quantitative information about the leachability of urea per se. In order to make the study more complete, the movement of the hydrolytic products of urea was also determined. Comoro fine sandy loam columns with lengths of 30, 61, and 91 cm were fertilized with ¹ ⁵N-labelled urea and irrigated immediately with 10 cm of a leaching solution. Chemical analyses of the soil from the columns were performed after three, five, and six days respectively. Chemical analyses of increments of leachate were also done. A gamma-ray column scanner was used for moisture studies of the columns. It was found that all of the urea hydrolyzed or was immobilized within three days. The hydrolytic products accumulated mainly between 15 and 45 cm in depth. Approximately 50 percent of the added urea was immobilized within six days, and approximately 50 percent was found as nitrates in the 91 cm columns at the end of six days.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Urea as fertilizer.; Soil percolation.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Soil, Water and Engineering; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Tucker, Thomas C.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleUrea leaching in a sandy soil.en_US
dc.creatorSpiro, David Alan,1933-en_US
dc.contributor.authorSpiro, David Alan,1933-en_US
dc.date.issued1972en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractAn experiment was developed to provide quantitative information about the leachability of urea per se. In order to make the study more complete, the movement of the hydrolytic products of urea was also determined. Comoro fine sandy loam columns with lengths of 30, 61, and 91 cm were fertilized with ¹ ⁵N-labelled urea and irrigated immediately with 10 cm of a leaching solution. Chemical analyses of the soil from the columns were performed after three, five, and six days respectively. Chemical analyses of increments of leachate were also done. A gamma-ray column scanner was used for moisture studies of the columns. It was found that all of the urea hydrolyzed or was immobilized within three days. The hydrolytic products accumulated mainly between 15 and 45 cm in depth. Approximately 50 percent of the added urea was immobilized within six days, and approximately 50 percent was found as nitrates in the 91 cm columns at the end of six days.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshUrea as fertilizer.en_US
dc.subject.lcshSoil percolation.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineSoil, Water and Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairTucker, Thomas C.en_US
dc.identifier.oclc213297897en_US
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