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Sugarcane response to polyhalite fertilizer in Brazilian Oxisols

dc.contributor.authorPavinato, Paulo Sergio
dc.contributor.authorCora, Jose Eduardo [UNESP]
dc.contributor.authorSantos, Aline de Camargo
dc.contributor.authorBejarano Herrera, Wilfrand Ferney
dc.contributor.authorPavuluri, Kiran
dc.contributor.authorPierce, Francis J.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Florida
dc.contributor.institutionWashington State Univ
dc.date.accessioned2021-06-25T12:36:43Z
dc.date.available2021-06-25T12:36:43Z
dc.date.issued2020-11-01
dc.description.abstractPolyhalite (PYH), (K2SO4.MgSO4.2CaSO(4).2H(2)O), contains four nutrients of great importance to sugarcane (Saccharum spp.), but has lower water solubility than traditional K fertilizers. Two studies were conducted to determine if PYH fertilizer (11.6% K) promoted sugarcane response comparable to other K fertilizers on highly weathered, acidic Oxisol soils in Brazil. A pot study compared PYH with potassium chloride (KCl, 50% K) and potassium sulfate (K2SO4, 40% K and 17% S), both amended to the same Ca, Mg, and S contents, applied at five rates ranging from 0 to 166 kg K ha(-1) in limed and unlimed soil. A field study evaluated PYH with KCl applied in a 5-30-10 blend at planting followed by sidedress applications of K as PYH or KCl in the establishment year and two ratoon crops. In the pot study, there were minimal effects of fertilizer source and application rate on early growth in sugarcane while liming was detrimental. Uptake of K in the biomass was linear and similar among fertilizer sources. PYH increased S uptake and soil tests compared to KCl and K2SO4. In the field study, KCl and PYH had similar sugarcane yield and quality with K uptake in both exceeding K applied and PYH increased S uptake and soil test SO4-S. These studies confirm nutrient release from PYH to sugarcane was adequate and comparable to KCl and K2SO4, with some effect of PYH on nutrient uptake and soil test that did not affect sugarcane yield or quality.en
dc.description.affiliationUniv Sao Paulo, Soil Sci Dept, Luiz de Queiroz Coll Agr, Padua Dias Ave,Box 9, BR-13418900 Piracicaba, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Soil Sci Dept, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUniv Florida, Inst Food & Agr Sci, Everglades Res & Educ Ctr, Agron Dept, 3200 East Palm Beach Rd, Belle Glade, FL 33430 USA
dc.description.affiliation10 Hornbeam Close, York YO306RD, N Yorkshire, England
dc.description.affiliationWashington State Univ, 2640 Cobbs Way, Palm Harbor, FL 34684 USA
dc.description.affiliationUnespSao Paulo State Univ, Soil Sci Dept, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorship(AngloAmerican)
dc.format.extent5264-5278
dc.identifierhttp://dx.doi.org/10.1002/agj2.20452
dc.identifier.citationAgronomy Journal. Hoboken: Wiley, v. 112, n. 6, p. 5264-5278, 2020.
dc.identifier.doi10.1002/agj2.20452
dc.identifier.issn0002-1962
dc.identifier.urihttp://hdl.handle.net/11449/210013
dc.identifier.wosWOS:000615278100057
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofAgronomy Journal
dc.sourceWeb of Science
dc.titleSugarcane response to polyhalite fertilizer in Brazilian Oxisolsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.orcid0000-0002-0223-5829[3]
unesp.departmentSolos e Adubos - FCAVpt

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