The effects of maturity differences on competition between adjacent rows of Sorghum bicolor varieties at two levels of soil moisture

Persistent Link:
http://hdl.handle.net/10150/276972
Title:
The effects of maturity differences on competition between adjacent rows of Sorghum bicolor varieties at two levels of soil moisture
Author:
Bisso Eya, Joseph, 1955-
Issue Date:
1989
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 objective of the study was to determine if and how grain sorghum hybrids (Sorghum bicolor (L.) Moench) of different maturity dates compete with one another when planted in adjacent rows under different moisture levels. Five sorghum varieties differing in their maturity were used: Taylor Evans Y-101-G coming to mid-bloom in 71 days, RS 610, Asgrow Corral, DK 64 and DK 69 coming to mid-bloom in 56.9 days, 61 days, 69.3 days and 75.6 days respectively. Six agronomic characters were measured to determine the effect and extent of competition. They included the number of days to mid-bloom, tiller ratio, grain yield, grain test weight and 300-seed weight. According to the results, adjacent row competition took place due to differences in maturity date for grain yield and 300-seed weight. An almost equilibrium appeared between loss or gain of border rows compared to the loss or gain of the middle row. Also the length of time between day to mid-bloom of the border rows hybrids and the center row genotype was important in the extent of competition effects.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Sorghum -- Growth.; Sorghum -- Water requirements.; Soil moisture.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Plant Sciences
Degree Grantor:
University of Arizona
Advisor:
Voigt, Robert L.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleThe effects of maturity differences on competition between adjacent rows of Sorghum bicolor varieties at two levels of soil moistureen_US
dc.creatorBisso Eya, Joseph, 1955-en_US
dc.contributor.authorBisso Eya, Joseph, 1955-en_US
dc.date.issued1989en_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 objective of the study was to determine if and how grain sorghum hybrids (Sorghum bicolor (L.) Moench) of different maturity dates compete with one another when planted in adjacent rows under different moisture levels. Five sorghum varieties differing in their maturity were used: Taylor Evans Y-101-G coming to mid-bloom in 71 days, RS 610, Asgrow Corral, DK 64 and DK 69 coming to mid-bloom in 56.9 days, 61 days, 69.3 days and 75.6 days respectively. Six agronomic characters were measured to determine the effect and extent of competition. They included the number of days to mid-bloom, tiller ratio, grain yield, grain test weight and 300-seed weight. According to the results, adjacent row competition took place due to differences in maturity date for grain yield and 300-seed weight. An almost equilibrium appeared between loss or gain of border rows compared to the loss or gain of the middle row. Also the length of time between day to mid-bloom of the border rows hybrids and the center row genotype was important in the extent of competition effects.en_US
dc.description.notep. 18 missing from paper original and microfilm version.-
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectSorghum -- Growth.en_US
dc.subjectSorghum -- Water requirements.en_US
dc.subjectSoil moisture.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplinePlant Sciencesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorVoigt, Robert L.en_US
dc.identifier.proquest1336667en_US
dc.identifier.oclc22786539en_US
dc.identifier.bibrecord.b17503784en_US
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