Root growth and nutrient accumulation in cover crops as affected by soil compaction

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dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.authorFoloni, J. S S [UNESP]
dc.contributor.authorTiritan, C. S. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:20:27Z
dc.date.available2014-05-27T11:20:27Z
dc.date.issued2002-03-25
dc.description.abstractCrop rotation using cover crops with vigorous root systems may be a tool to manage soils with some degree of compaction. Root and shoot growth as well as nutrient accumulation by summer species suitable for crop rotation in tropical areas were studied at different subsoil compaction levels. Crotalaria juncea (Indian hemp), Crotalaria spectabilis (showy crotalaria), Helianthus annuus (sunflower), Pennisetum americanum (pearl millet) and Sorghum bicolor (guinea sorghum) were grown for 40 days in pots 33.5 cm high with 10 cm internal diameter. Soil in the pots had uniform bulkdensity of 1.25 Mg m-3 for the top and bottom 15 cm sections. Bulk densities of 1.31, 1.43, 1.58 and 1.70 Mg m-3 Were established in the 3.5 cm middle section. H. annuus and P. americanum had the highest early macronutrient accumulation. The grasses S. bicolor and P. americanum yielded twice as much shoot dry matter as the other species. Root growth generally decreased with increasing soil bulk density with C. spectabilis less affected than other species. Although the grasses were more sensitive to high soil penetration resistance, they showed higher root length densities at all compaction levels. P. americanum had the highest potential to be used as cover crop due to its high root density at high soil penetration resistances, vegetative vigour and ability to accumulate macronutrients. © 2002 Elsevier Science B.V. All rights reserved.en
dc.description.affiliationDepartment of Crop Science College of Agricultural Sciences São Paulo State University, CP 237, 18603-970 Botucatu, SP
dc.description.affiliationUnespDepartment of Crop Science College of Agricultural Sciences São Paulo State University, CP 237, 18603-970 Botucatu, SP
dc.format.extent109-115
dc.identifierhttp://dx.doi.org/10.1016/S0167-1987(01)00286-0
dc.identifier.citationSoil and Tillage Research, v. 65, n. 1, p. 109-115, 2002.
dc.identifier.doi10.1016/S0167-1987(01)00286-0
dc.identifier.issn0167-1987
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.scopus2-s2.0-0036122195
dc.identifier.urihttp://hdl.handle.net/11449/66854
dc.identifier.wosWOS:000174408700010
dc.language.isoeng
dc.relation.ispartofSoil and Tillage Research
dc.relation.ispartofjcr3.824
dc.relation.ispartofsjr1,703
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBiopores
dc.subjectCover crops
dc.subjectCrop rotation
dc.subjectRoots
dc.subjectSoil bulk density
dc.subjectbulk density
dc.subjectcompaction
dc.subjectcover crop
dc.subjectcrop rotation
dc.subjectnutrient
dc.subjectroot system
dc.subjectsoil property
dc.subjectApocynum cannabinum
dc.subjectCannabis
dc.subjectCannabis sativa
dc.subjectCrotalaria
dc.subjectCrotalaria juncea
dc.subjectCrotalaria spectabilis
dc.subjectHelianthus
dc.subjectHelianthus annuus
dc.subjectHibiscus cannabinus
dc.subjectPennisetum
dc.subjectPennisetum glaucum
dc.subjectPoaceae
dc.subjectSorghum bicolor
dc.titleRoot growth and nutrient accumulation in cover crops as affected by soil compactionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes5720775873259528[1]
unesp.author.orcid0000-0003-2001-0874[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas