Growth, water relations and biomass production of the savanna grasses Chloris roxburghiana and Cenchrus ciliaris in Kenya
Identifieur interne : 001265 ( Istex/Corpus ); précédent : 001264; suivant : 001266Growth, water relations and biomass production of the savanna grasses Chloris roxburghiana and Cenchrus ciliaris in Kenya
Auteurs : George A. KeyaSource :
- Journal of Arid Environments [ 0140-1963 ] ; 1998.
English descriptors
- KwdEn :
Abstract
A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoidsChloris roxburghianaandCenchrus ciliarisin a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.Chloris roxburghianarecorded faster growth rates and greater dry matter fixation thanC. ciliaris. This study demonstrated possibilities of fodder production of up to 11 t ha−1and 6·6 t ha−1forC. roxburghianaandC. ciliaris, respectively. Similarly,C. roxburghianawas more efficient at controlling water loss thanC. ciliaris, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status ofC. roxburghiana, it had no apparent effect on that ofC. ciliaris. Growth and green-up responses ofC. roxburghianaoccurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.
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DOI: 10.1006/jare.1997.0336
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ISTEX:CC28C73A2D6AB3BED13664EC772F48FFAE6D883BLe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Growth, water relations and biomass production of the savanna grasses Chloris roxburghiana and Cenchrus ciliaris in Kenya</title><author><name sortKey="Keya, George A" sort="Keya, George A" uniqKey="Keya G" first="George A." last="Keya">George A. Keya</name><affiliation><mods:affiliation>National Arid Lands Research Centre, P.O. 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Box 147, Marsabit, Kenya</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Arid Environments</title><title level="j" type="abbrev">YJARE</title><idno type="ISSN">0140-1963</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998">1998</date><biblScope unit="volume">38</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="205">205</biblScope><biblScope unit="page" to="219">219</biblScope></imprint><idno type="ISSN">0140-1963</idno></series><idno type="istex">CC28C73A2D6AB3BED13664EC772F48FFAE6D883B</idno><idno type="DOI">10.1006/jare.1997.0336</idno><idno type="PII">S0140-1963(97)90336-0</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0140-1963</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cenchrus ciliaris</term><term>Chloris roxburghiana</term><term>biomass</term><term>grass</term><term>northern Kenya</term><term>phenology</term><term>savanna</term><term>transpiration</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoidsChloris roxburghianaandCenchrus ciliarisin a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.Chloris roxburghianarecorded faster growth rates and greater dry matter fixation thanC. ciliaris. This study demonstrated possibilities of fodder production of up to 11 t ha−1and 6·6 t ha−1forC. roxburghianaandC. ciliaris, respectively. Similarly,C. roxburghianawas more efficient at controlling water loss thanC. ciliaris, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status ofC. roxburghiana, it had no apparent effect on that ofC. ciliaris. Growth and green-up responses ofC. roxburghianaoccurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>George A. Keya</name><affiliations><json:string>National Arid Lands Research Centre, P.O. Box 147, Marsabit, Kenya</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>grass</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Cenchrus ciliaris</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Chloris roxburghiana</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>phenology</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>biomass</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>transpiration</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>savanna</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>northern Kenya</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoidsChloris roxburghianaandCenchrus ciliarisin a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.Chloris roxburghianarecorded faster growth rates and greater dry matter fixation thanC. ciliaris. This study demonstrated possibilities of fodder production of up to 11 t ha−1and 6·6 t ha−1forC. roxburghianaandC. ciliaris, respectively. Similarly,C. roxburghianawas more efficient at controlling water loss thanC. ciliaris, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status ofC. roxburghiana, it had no apparent effect on that ofC. ciliaris. Growth and green-up responses ofC. roxburghianaoccurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.</abstract><qualityIndicators><score>6.347</score><pdfVersion>1.2</pdfVersion><pdfPageSize>595 x 842 pts (A4)</pdfPageSize><refBibsNative>false</refBibsNative><keywordCount>8</keywordCount><abstractCharCount>1155</abstractCharCount><pdfWordCount>4535</pdfWordCount><pdfCharCount>28376</pdfCharCount><pdfPageCount>15</pdfPageCount><abstractWordCount>151</abstractWordCount></qualityIndicators><title>Growth, water relations and biomass production of the savanna grasses Chloris roxburghiana and Cenchrus ciliaris in Kenya</title><pii><json:string>S0140-1963(97)90336-0</json:string></pii><refBibs><json:item><host><pages><first>122</first></pages><author><json:item><name>A,R Ali</name></json:item></author><title>Water relations strategies of two grass and shrub species as influenced by prescribed burning in a semiarid ecosystem in Kenya</title><publicationDate>1984</publicationDate></host></json:item><json:item><host><pages><last>24</last><first>19</first></pages><author><json:item><name>M,N Butt</name></json:item><json:item><name>G,B Donart</name></json:item><json:item><name>M,G Southward</name></json:item><json:item><name>R Pieper</name></json:item><json:item><name>D,N Mohamma</name></json:item></author><title>Effects of defoliation on plant growth of buffel grass (Cenchrus ciliaris) Annals of Arid Zones</title><publicationDate>1992</publicationDate></host></json:item><json:item><author><json:item><name>A,K Chakravarty</name></json:item><json:item><name>R,B Das</name></json:item></author><host><volume>4</volume><pages><last>16</last><first>10</first></pages><author></author><title>Annals of Arid Zone</title><publicationDate>1965</publicationDate></host><title>Polymorphism in Cenchrus ciliaris</title><publicationDate>1965</publicationDate></json:item><json:item><author><json:item><name>A Chakravarty</name></json:item><json:item><name>L Kalkan</name></json:item></author><host><volume>5</volume><pages><last>71</last><first>63</first></pages><author></author><title>Annals of Arid Zone</title><publicationDate>1966</publicationDate></host><title>Study on variation in seed yielding components of Cenchrus ciliaris</title><publicationDate>1966</publicationDate></json:item><json:item><host><pages><first>140</first></pages><author><json:item><name>H,F Heady</name></json:item><json:item><name>E,B Heady</name></json:item></author><title>Range and Wildlife Management in the Tropics</title><publicationDate>1982</publicationDate></host></json:item><json:item><author><json:item><name>B Hornetz</name></json:item></author><host><pages><last>453</last><first>413</first></pages><author></author><title>Topics in Applied Resource Management in the Tropics Acceptance of soil and water conservation</title><publicationDate>1993</publicationDate></host><title>On the development and acceptance of agropastoral (agrosilvipastoral) systems in the semi-arid areas of northern Kenya</title><publicationDate>1993</publicationDate></json:item><json:item><author><json:item><name>B Hornetz</name></json:item></author><host><volume>19</volume><pages><last>119</last><first>83</first></pages><author></author><title>Geomethodica</title><publicationDate>1994</publicationDate></host><title>Agro (Silvi)pastoralesystem in den Semiariden Tropen-M ¨ oglichkeiten zur Ressourcenschonenden Stabilisierung der Nahrungsmittelproduction an der Agronomischen Trockengrenze (mit Beispielen aus N-und SE-Kenya)</title><publicationDate>1994</publicationDate></json:item><json:item><host><author><json:item><name>B Hornetz</name></json:item><json:item><name>R Jätzold</name></json:item><json:item><name>T Litschko</name></json:item><json:item><name>D Opp</name></json:item></author><title>Beziehungen zwischen Klima, Weideverhältnissen und Anbaumöglichkeeiten in Marginalen Semiariden und Ariden Tropen mit Beispilen aus Nord-und Ost-Kenya. 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Hornetz, Department of Geography and Geosciences, University of Trier, P.O. Box 3825, D-54286 Trier, Germany.</note><affiliation>Present address: c/o Dr B. Hornetz, Department of Geography and Geosciences, University of Trier, P.O. Box 3825, D-54286 Trier, Germany.</affiliation><affiliation>National Arid Lands Research Centre, P.O. Box 147, Marsabit, Kenya</affiliation></author></analytic><monogr><title level="j">Journal of Arid Environments</title><title level="j" type="abbrev">YJARE</title><idno type="pISSN">0140-1963</idno><idno type="PII">S0140-1963(00)X0041-9</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998"></date><biblScope unit="volume">38</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="205">205</biblScope><biblScope unit="page" to="219">219</biblScope></imprint></monogr><idno type="istex">CC28C73A2D6AB3BED13664EC772F48FFAE6D883B</idno><idno type="DOI">10.1006/jare.1997.0336</idno><idno type="PII">S0140-1963(97)90336-0</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1998</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoidsChloris roxburghianaandCenchrus ciliarisin a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.Chloris roxburghianarecorded faster growth rates and greater dry matter fixation thanC. ciliaris. This study demonstrated possibilities of fodder production of up to 11 t ha−1and 6·6 t ha−1forC. roxburghianaandC. ciliaris, respectively. Similarly,C. roxburghianawas more efficient at controlling water loss thanC. ciliaris, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status ofC. roxburghiana, it had no apparent effect on that ofC. ciliaris. Growth and green-up responses ofC. roxburghianaoccurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>grass</term></item><item><term>Cenchrus ciliaris</term></item><item><term>Chloris roxburghiana</term></item><item><term>phenology</term></item><item><term>biomass</term></item><item><term>transpiration</term></item><item><term>savanna</term></item><item><term>northern Kenya</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1998">Published</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2016-12-21">References added</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2017-01-13">References added</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2017-01-16">References added</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/CC28C73A2D6AB3BED13664EC772F48FFAE6D883B/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier converted-article found"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla" xml:lang="en"><item-info><jid>YJARE</jid><aid>90336</aid><ce:pii>S0140-1963(97)90336-0</ce:pii><ce:doi>10.1006/jare.1997.0336</ce:doi><ce:copyright type="full-transfer" year="1998">Academic Press</ce:copyright></item-info><head><ce:dochead><ce:textfn>Regular Article</ce:textfn></ce:dochead><ce:title>Growth, water relations and biomass production of the savanna grasses<ce:bold><ce:italic>Chloris roxburghiana</ce:italic></ce:bold>and<ce:bold><ce:italic>Cenchrus ciliaris</ce:italic></ce:bold>in Kenya</ce:title><ce:author-group><ce:author><ce:given-name>George A.</ce:given-name><ce:surname>Keya</ce:surname><ce:cross-ref refid="AE970336FN1"><ce:sup>f1</ce:sup></ce:cross-ref></ce:author><ce:affiliation><ce:textfn>National Arid Lands Research Centre, P.O. Box 147, Marsabit, Kenya</ce:textfn></ce:affiliation><ce:footnote id="AE970336FN1"><ce:label>f1</ce:label><ce:note-para>Present address: c/o Dr B. Hornetz, Department of Geography and Geosciences, University of Trier, P.O. Box 3825, D-54286 Trier, Germany.</ce:note-para></ce:footnote></ce:author-group><ce:date-received day="11" month="7" year="1997"></ce:date-received><ce:date-accepted day="20" month="10" year="1997"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoids<ce:italic>Chloris roxburghiana</ce:italic>and<ce:italic>Cenchrus ciliaris</ce:italic>in a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.<ce:italic>Chloris roxburghiana</ce:italic>recorded faster growth rates and greater dry matter fixation than<ce:italic>C. ciliaris</ce:italic>. This study demonstrated possibilities of fodder production of up to 11 t ha<ce:sup>−1</ce:sup>and 6·6 t ha<ce:sup>−1</ce:sup>for<ce:italic>C. roxburghiana</ce:italic>and<ce:italic>C. ciliaris</ce:italic>, respectively. Similarly,<ce:italic>C. roxburghiana</ce:italic>was more efficient at controlling water loss than<ce:italic>C. ciliaris</ce:italic>, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status of<ce:italic>C. roxburghiana</ce:italic>, it had no apparent effect on that of<ce:italic>C. ciliaris</ce:italic>. Growth and green-up responses of<ce:italic>C. roxburghiana</ce:italic>occurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>grass</ce:text></ce:keyword><ce:keyword><ce:text><ce:bold><ce:italic>Cenchrus ciliaris</ce:italic></ce:bold></ce:text></ce:keyword><ce:keyword><ce:text><ce:bold><ce:italic>Chloris roxburghiana</ce:italic></ce:bold></ce:text></ce:keyword><ce:keyword><ce:text>phenology</ce:text></ce:keyword><ce:keyword><ce:text>biomass</ce:text></ce:keyword><ce:keyword><ce:text>transpiration</ce:text></ce:keyword><ce:keyword><ce:text>savanna</ce:text></ce:keyword><ce:keyword><ce:text>northern Kenya</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Growth, water relations and biomass production of the savanna grasses Chloris roxburghiana and Cenchrus ciliaris in Kenya</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>Growth, water relations and biomass production of the savanna grasses</title></titleInfo><name type="personal"><namePart type="given">George A.</namePart><namePart type="family">Keya</namePart><affiliation>National Arid Lands Research Centre, P.O. Box 147, Marsabit, Kenya</affiliation><description>Present address: c/o Dr B. Hornetz, Department of Geography and Geosciences, University of Trier, P.O. Box 3825, D-54286 Trier, Germany.</description><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1998</dateIssued><copyrightDate encoding="w3cdtf">1998</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">A study was carried out to determine and compare the ecophysiology of the perennial savanna graminoidsChloris roxburghianaandCenchrus ciliarisin a semi-arid pediment region of northern Kenya. Growth, phenology, water relations and biomass production potential were investigated under clipped and non-clipped conditions.Chloris roxburghianarecorded faster growth rates and greater dry matter fixation thanC. ciliaris. This study demonstrated possibilities of fodder production of up to 11 t ha−1and 6·6 t ha−1forC. roxburghianaandC. ciliaris, respectively. Similarly,C. roxburghianawas more efficient at controlling water loss thanC. ciliaris, indicating a better adaptation to drought. On average, growth and leaf area development on clipped plots was faster than the controls. However, defoliation delayed and reduced reproduction. Although defoliation improved the water status ofC. roxburghiana, it had no apparent effect on that ofC. ciliaris. Growth and green-up responses ofC. roxburghianaoccurred 2–4 days following rains. The productivity and ecophysiology of these species render them suitable for increasing land productivity in semi-arid areas.</abstract><note type="content">Section title: Regular Article</note><subject lang="en"><genre>Keywords</genre><topic>grass</topic><topic>Cenchrus ciliaris</topic><topic>Chloris roxburghiana</topic><topic>phenology</topic><topic>biomass</topic><topic>transpiration</topic><topic>savanna</topic><topic>northern Kenya</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Arid Environments</title></titleInfo><titleInfo type="abbreviated"><title>YJARE</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">199802</dateIssued></originInfo><identifier type="ISSN">0140-1963</identifier><identifier type="PII">S0140-1963(00)X0041-9</identifier><part><date>199802</date><detail type="volume"><number>38</number><caption>vol.</caption></detail><detail type="issue"><number>2</number><caption>no.</caption></detail><extent unit="issue pages"><start>145</start><end>334</end></extent><extent unit="pages"><start>205</start><end>219</end></extent></part></relatedItem><identifier type="istex">CC28C73A2D6AB3BED13664EC772F48FFAE6D883B</identifier><identifier type="DOI">10.1006/jare.1997.0336</identifier><identifier type="PII">S0140-1963(97)90336-0</identifier><accessCondition type="use and reproduction" contentType="copyright">©1998 Academic Press</accessCondition><recordInfo><recordContentSource>ELSEVIER</recordContentSource><recordOrigin>Academic Press, ©1998</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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