Gypsum application, soil fertility and cotton root growth

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dc.contributor.authorPivetta, Laercio Augusto
dc.contributor.authorCastoldi, Gustavo
dc.contributor.authorPivetta, Laerte Gustavo
dc.contributor.authorMendonca Maia, Suelen Cristina
dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.institutionUniv Fed Parana
dc.contributor.institutionInst Fed Goiano
dc.contributor.institutionInst Fed Educ Ciencia & Tecnol Mato Grosso
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T02:49:16Z
dc.date.available2019-10-06T02:49:16Z
dc.date.issued2019-04-01
dc.description.abstractSince there is no consensus on phosphogypsum (PG) rates to be used in agriculture, a better understanding of its effects on the soil solution is needed. Cotton root growth was evaluated as related to Al and Ca activity in soil solution affected by PG. The experiment was carried out in rhizotrons filled with 30.dm(-3) of soil. PG rates were estimated by multiplying the soil clay content by 0.0,1.5, 3.0, 6.0 and 12.0, and it was mixed to the sub-soil. In the upper soil layer, limestone was applied. After 90 days, samples were taken for analysis, and cotton was planted. After 27 days, plants were harvested. PG increased soil pH and decreased Al content and activity. Without PG, dissolved organic carbon concentration was high in the soil solution, which explains the predominance of carbon Al-complexed with PG application. From 1,680 kg.ha(-1) of PG (corresponding to 6 x clay content), sulphur and calcium had the highest concentrations, increasing the SO4 Al-complexed. Cotton root length decreased in the upper layer and increased in the subsoil up to 2,324 kg.ha(-1) (corresponding to 8.3 x clay content) of PG. Cotton root growth is better related with soil properties than with soil solution attributes, and the present recommendations for PG use based on soil clay content underestimate the rate to be applied.en
dc.description.affiliationUniv Fed Parana, Dept Ciencias Agron, Palotina, PR, Brazil
dc.description.affiliationInst Fed Goiano, Polo Inovacao, Rio Verde, Go, Brazil
dc.description.affiliationInst Fed Educ Ciencia & Tecnol Mato Grosso, Sorriso, MT, Brazil
dc.description.affiliationInst Fed Goiano, Cristalina, Go, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agron, Dept Agr, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agron, Dept Agr, Botucatu, SP, Brazil
dc.format.extent264-273
dc.identifierhttp://dx.doi.org/10.1590/1678-4499.20180183
dc.identifier.citationBragantia. Campinas: Inst Agronomico, v. 78, n. 2, p. 264-273, 2019.
dc.identifier.doi10.1590/1678-4499.20180183
dc.identifier.fileS0006-87052019000200264.pdf
dc.identifier.issn0006-8705
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.scieloS0006-87052019000200264
dc.identifier.urihttp://hdl.handle.net/11449/186772
dc.identifier.wosWOS:000470863300012
dc.language.isoeng
dc.publisherInst Agronomico
dc.relation.ispartofBragantia
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectaluminum
dc.subjectdissolved organic carbon
dc.subjectsoil chemistry
dc.titleGypsum application, soil fertility and cotton root growthen
dc.typeArtigo
dcterms.rightsHolderInst Agronomico
unesp.author.lattes5720775873259528[5]
unesp.author.orcid0000-0002-2206-2830[2]
unesp.author.orcid0000-0003-3956-1473[3]
unesp.author.orcid0000-0003-2001-0874[5]

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