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dc.contributor.author
Chiacchiera, Sebastián
dc.contributor.author
Bertram, Nicolás
dc.contributor.author
Taleisnik, Edith
dc.contributor.author
Jobbagy Gampel, Esteban Gabriel
dc.date.available
2017-06-05T18:39:37Z
dc.date.issued
2016-01
dc.identifier.citation
Chiacchiera, Sebastián; Bertram, Nicolás; Taleisnik, Edith; Jobbagy Gampel, Esteban Gabriel; Effect of watertable depth and salinity on growth dynamics of Rhodes grass (Chloris gayana); Csiro Publishing; Crop and Pasture Science; 67; 8; 1-2016; 881-887
dc.identifier.issn
1836-0947
dc.identifier.uri
http://hdl.handle.net/11336/17506
dc.description.abstract
Depending on their depth, watertables can have a positive effect on plants by supplying water, a negative effect by creating waterlogged and/or saline conditions or a neutral effect. Rhodes grass (Chloris gayana), a tropical perennial forage adapted to saline soils, floods and droughts, is a viable choice for the lowlands in the Pampas region of Argentina. The effects of the depth and salt concentration of the watertable on the growth dynamics and biomass accumulation of Rhodes grass were quantified in a greenhouse experiment. The experiment consisted of 10 treatments, resulting from the factorial combination of five watertable depths (25, 75, 125, 175 and 225cm) and two salt treatments (EC 1.4 and 20.5dSm-1). The presence of non-saline watertable at a depth of 25cm produced a 5-fold greater biomass and showed an increase in water consumption of equal magnitude compared with deeper watertables. The increase in shoot biomass was explained primarily by higher tiller and stolon density, which increased 3.3- and 7.7-fold respectively, at watertables that were 25cm deep compared with deeper treatments. Furthermore, groundwater use efficiency was 30% higher in non-saline watertables at 25cm depth. Similarly, at this depth, the leaf blades were 50% longer compared with the deepest watertables evaluated. In contrast, the presence of saline watertables at 25cm depth had a detrimental effect on the production of biomass and its components, whereas the effect at 125cm and greater depths was neutral. Therefore, Rhodes grass is a species that can take advantage of the widespread shallow watertable environments of the Pampas region as long as the salinity levels are low.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Accumulated Biomass
dc.subject
Water Stress
dc.subject
Water Use Efficiency
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Effect of watertable depth and salinity on growth dynamics of Rhodes grass (Chloris gayana)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-05T14:47:37Z
dc.journal.volume
67
dc.journal.number
8
dc.journal.pagination
881-887
dc.journal.pais
Australia
dc.journal.ciudad
sydney
dc.description.fil
Fil: Chiacchiera, Sebastián. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juarez; Argentina
dc.description.fil
Fil: Bertram, Nicolás. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juarez; Argentina
dc.description.fil
Fil: Taleisnik, Edith. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juarez; Argentina
dc.description.fil
Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina
dc.journal.title
Crop and Pasture Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/CP15241
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/cp/CP15241


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