The uniformity of water distribution under low-pressure moving irrigation systems

Persistent Link:
http://hdl.handle.net/10150/191756
Title:
The uniformity of water distribution under low-pressure moving irrigation systems
Author:
Vlotman, W. F.(Willem Frederik)
Issue Date:
1982
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:
A center pivot and linear move sprinkler irrigation system are modified to work with low-pressures. Furrow drops which deliver water directly to the furrow and spray heads, which spray the water at approximately 1.20 m above the ground are both tested. Earthen checks are used in the furrow (furrow checks) to retain the water because application rates exceed the infiltration rate of the soil. The stop-and-go movement of the system causes non-uniform water distribution along the furrow. This non-uniformity is investigated in the field and with a computer model. Results indicate that this non-uniformity depends on the furrow check spacing and the length of the system, but not on the system speed. The uniformity perpendicular to the furrows (along the main supply line of the system) is very good. The irrigation efficiency and the yield are high while substantial water and energy savings can be obtained.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Sprinkler irrigation.; Irrigation efficiency.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Soils, Water and Engineering; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Fangmeier, Delmar D.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThe uniformity of water distribution under low-pressure moving irrigation systemsen_US
dc.creatorVlotman, W. F.(Willem Frederik)en_US
dc.contributor.authorVlotman, W. F.(Willem Frederik)en_US
dc.date.issued1982en_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.abstractA center pivot and linear move sprinkler irrigation system are modified to work with low-pressures. Furrow drops which deliver water directly to the furrow and spray heads, which spray the water at approximately 1.20 m above the ground are both tested. Earthen checks are used in the furrow (furrow checks) to retain the water because application rates exceed the infiltration rate of the soil. The stop-and-go movement of the system causes non-uniform water distribution along the furrow. This non-uniformity is investigated in the field and with a computer model. Results indicate that this non-uniformity depends on the furrow check spacing and the length of the system, but not on the system speed. The uniformity perpendicular to the furrows (along the main supply line of the system) is very good. The irrigation efficiency and the yield are high while substantial water and energy savings can be obtained.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSprinkler irrigation.en_US
dc.subject.lcshIrrigation efficiency.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineSoils, Water and Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairFangmeier, Delmar D.en_US
dc.contributor.committeememberHundtoft, Elgin B.en_US
dc.contributor.committeememberWiersma, Franken_US
dc.identifier.oclc212893476en_US
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