Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorVolf, Marcelo R.-
Autor(es): dc.creatorRosolem, Ciro A. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:57:22Z-
Data de disponibilização: dc.date.available2022-02-22T00:57:22Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-23-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s42729-020-00350-7-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209692-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209692-
Descrição: dc.descriptionSlow-release fertilizers have been proposed as tools to increase P fertilizer use efficiency in tropical acidic soils with high P adsorption, low P availability, and mobility. However, results have been controversial since soil diversity and the fertilizer itself may influence the results, which is not completely understood. Soil P diffusion and availability were studied in soils with different P fertilization histories, where triple superphosphate (TSP) and single superphosphate (SSP) coated with a polymer or with humic acid and complexed with humic acid were applied under laboratory conditions. No difference in soil P availability and diffusion was observed between humic acid-complexed, polymer, and humic acid-coated TSP and conventional TSP. For SSP, soil P availability was 15 to 30% lower in the region of application for the polymer and 0 to 16% for the humic-coated fertilizer. For the polymer-coated SSP, P diffusion was lower in some soils. With both base fertilizers, the soil adsorption capacity was more determinant of P diffusion than the protection of the fertilizers. Coating P fertilizers with polymer and complexing or coating the fertilizer with humic acid does not increase P availability or diffusivity in soil since these processes are driven mainly by the soil characteristics. Therefore, the potential of these controlled-release P fertilizers in increasing P use efficiency is low.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionWestern Sao Paulo Univ, Dept Agron, Rod Raposo Tavares,Km 572, BR-19067175 Presidente Prudente, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Dept Crop Sci, Sch Agr Sci, Av Univ 3780, BR-18604034 Botucatu, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Dept Crop Sci, Sch Agr Sci, Av Univ 3780, BR-18604034 Botucatu, SP, Brazil-
Descrição: dc.descriptionFAPESP: 2015/04200-0-
Formato: dc.format162-172-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationJournal Of Soil Science And Plant Nutrition-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectPhosphate fertilizer-
Palavras-chave: dc.subjectSlow release-
Palavras-chave: dc.subjectP adsorption-
Palavras-chave: dc.subjectPolymer-
Palavras-chave: dc.subjectHumic acid-
Título: dc.titleSoil P Diffusion and Availability Modified by Controlled-Release P Fertilizers-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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