Ruzigrass root persistence and soybean root growth

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dc.contributor.authorRosolem, Ciro A. [UNESP]
dc.contributor.authorOliveira Neto, Leontino [UNESP]
dc.contributor.authorCosta, Vladimir E. [UNESP]
dc.contributor.authorGrassmann, Camila da Silva [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-10T19:35:50Z
dc.date.available2020-12-10T19:35:50Z
dc.date.issued2019-09-01
dc.description.abstractAims Cropping systems using forage grasses as cover crops have been effective in soil conservation and nutrient cycling, but root persistence of ruzigrass (Urochloa ruziziensis) is significant, and may impair root growth of the next crop. However, it is unknown how this would interfere with soybean root growth and yield under field conditions. Methods Ruzigrass root persistence during soybean development, and its effects on soybean yield were studied under field conditions. Ruzigrass and soybean were grown alone or in rotation, and roots were sampled every 30 days and evaluated using carbon isotope discrimination. Results Despite temporary impairment of soybean root growth in the uppermost soil layer, there was no effect of ruzigrass on soybean yield. The ruzigrass root decay rate was high in the first 30 days after desiccation, and then it slowed down. Soybean roots grew slowly up to 30 days after planting (DAP, V7) and then peaked at 90 DAP (R5). Conclusions Soybean root growth and yield are not affected by decaying ruzigrass roots. Around 50% of the ruzigrass roots are mineralized before soybean flowering. However, by soybean harvest there are still from 25 to 28% of non-decomposed ruzigrass roots up to the soil depth of 0.20 m.en
dc.description.affiliationSao Paulo State Univ, Dept Crop Sci, Sch Agron, Botucatu, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Stable Isotope Ctr, Botucatu, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Crop Sci, Sch Agron, Botucatu, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Stable Isotope Ctr, Botucatu, SP, Brazil
dc.format.extent333-341
dc.identifierhttp://dx.doi.org/10.1007/s11104-019-04198-4
dc.identifier.citationPlant And Soil. Dordrecht: Springer, v. 442, n. 1-2, p. 333-341, 2019.
dc.identifier.doi10.1007/s11104-019-04198-4
dc.identifier.issn0032-079X
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.urihttp://hdl.handle.net/11449/196173
dc.identifier.wosWOS:000485324700023
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofPlant And Soil
dc.sourceWeb of Science
dc.subjectCropping system
dc.subjectSoybean
dc.subjectRuzigrass
dc.subjectRoots
dc.subjectCrop rotation
dc.titleRuzigrass root persistence and soybean root growthen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes5720775873259528[2]
unesp.author.orcid0000-0003-2001-0874[5]
unesp.departmentProdução Vegetalpt
unesp.departmentProdução e Melhoramento Vegetal - FCApt
unesp.departmentSolos e Recursos Ambientais - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas