The influence of irrigation timing on corn root growth, water use, and yield

Persistent Link:
http://hdl.handle.net/10150/277280
Title:
The influence of irrigation timing on corn root growth, water use, and yield
Author:
Jama, Ahmed Omar, 1955-
Issue Date:
1990
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:
The adverse effect of moisture stress at flowering and maturation stages on corn (Zea mays L.) grain yield is well documented. Stress at vegetative stages, on the other hand, affects dry matter more than grain yield but is also reported to condition the corn plant to withstand later stress. The objectives of this study were (1) to determine if moisture stress at vegetative stages could condition the corn crop to minimize the effect of stress at reproductive stages, and (2) to document the effect of this vegetative stress on corn root growth, water use and yield. Secondary root initiation was reduced by moisture stress at the 4 and 7 leaf stages. Moisture stress during vegetative stages reduced water use and stover weight but not grain yield. However, stress at silking reduced grain yield. Stress at vegetative stages did not precondition the corn to endure water deficit later in the season.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Agriculture, Agronomy.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Ottman, Michael J.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleThe influence of irrigation timing on corn root growth, water use, and yielden_US
dc.creatorJama, Ahmed Omar, 1955-en_US
dc.contributor.authorJama, Ahmed Omar, 1955-en_US
dc.date.issued1990en_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.abstractThe adverse effect of moisture stress at flowering and maturation stages on corn (Zea mays L.) grain yield is well documented. Stress at vegetative stages, on the other hand, affects dry matter more than grain yield but is also reported to condition the corn plant to withstand later stress. The objectives of this study were (1) to determine if moisture stress at vegetative stages could condition the corn crop to minimize the effect of stress at reproductive stages, and (2) to document the effect of this vegetative stress on corn root growth, water use and yield. Secondary root initiation was reduced by moisture stress at the 4 and 7 leaf stages. Moisture stress during vegetative stages reduced water use and stover weight but not grain yield. However, stress at silking reduced grain yield. Stress at vegetative stages did not precondition the corn to endure water deficit later in the season.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAgriculture, Agronomy.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorOttman, Michael J.en_US
dc.identifier.proquest1340258en_US
dc.identifier.bibrecord.b26239498en_US
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