Cotton root volume and root dry matter as function of high soil bulk density and soil water stress

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dc.contributor.authorDuruoha, Charles
dc.contributor.authorPiffer, Cassio Roberto [UNESP]
dc.contributor.authorSilva, Paulo Roberto Arbex [UNESP]
dc.contributor.institutionNational Soil Dynamics Laboratory
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:23:42Z
dc.date.available2014-05-27T11:23:42Z
dc.date.issued2008-12-01
dc.description.abstractSoil compaction reduces root growth, affecting the yield, especially in the Southern Coastal Plain of the USA. Simulations of the root restricting layers in greenhouses are necessary to develop mechanisms which alleviate soil compaction problems. The selection of three distinct bulk densities based on the Standard Proctor Test is also an important factor to determine which bulk density restricts root penetration. This experiment was conducted to evaluate cotton (Gossypium hirsutum L.) root volume and root dry matter as a function of soil bulk density and water stress. Three levels of soil density (1.2, 1.4, and 1.6 g cm-3), and two levels of water content (70 and 90% of field capacity) were used. A completely randomized design with four replicates in a 3×2 factorial pattern was used. The results showed that mechanical impedance affected root volume positively with soil bulk density of 1.2 and 1.6 g cm-3, enhancing root growth (P>0.0064). Soil water content reduced root growth as root and shoot growth was higher at 70% field capacity than that at 90% field capacity. Shoot growth was not affected by the increase in soil bulk density and this result suggests that soil bulk density is not a good indicator for measuring mechanical impedance in some soils.en
dc.description.affiliationUnited States Department of Agriculture (USDA-ARS) National Soil Dynamics Laboratory, Auburn, AL
dc.description.affiliationRural Engineering Department School of Agronomic Sciences São Paulo State University, Botucatu, SP
dc.description.affiliationUnespRural Engineering Department School of Agronomic Sciences São Paulo State University, Botucatu, SP
dc.format.extent476-491
dc.identifierhttp://200.145.140.50/ojs1/viewarticle.php?id=369&layout=abstract
dc.identifier.citationIrriga, v. 13, n. 4, p. 476-491, 2008.
dc.identifier.file2-s2.0-65849113265.pdf
dc.identifier.issn1413-7895
dc.identifier.issn1808-3765
dc.identifier.lattes9994399667350249
dc.identifier.orcid0000-0003-2737-5788
dc.identifier.scopus2-s2.0-65849113265
dc.identifier.urihttp://hdl.handle.net/11449/70646
dc.language.isoeng
dc.relation.ispartofIrriga
dc.relation.ispartofsjr0,283
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectRoot growth
dc.subjectSoil density
dc.subjectWater stress
dc.subjectbulk density
dc.subjectcotton
dc.subjectdry matter
dc.subjectroot
dc.subjectshoot growth
dc.subjectsoil property
dc.subjectwater stress
dc.subjectGossypium hirsutum
dc.titleCotton root volume and root dry matter as function of high soil bulk density and soil water stressen
dc.typeArtigo
dcterms.licensehttp://irriga.fca.unesp.br/index.php/irriga/about
unesp.author.lattes9994399667350249[3]
unesp.author.orcid0000-0003-2737-5788[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt

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Artigos - Engenharia Rural - FCA