Phosphorus fraction in a yellow latosol cropped under no-tilage system in the brazilian Amazon.

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dc.contributorEDILSON CARVALHO BRASIL, CPATU
dc.contributorRUBIA CARLA RIBEIRO DANTAS, UFRA
dc.contributorMÁRIO LOPES DA SILVA JÚNIOR, UFRA
dc.contributorMARCOS ANDRÉ PIEDADE GAMA, UFRA.
dc.creatorBRASIL, E. C.
dc.creatorDANTAS, R. C. R.
dc.creatorSILVA JÚNIOR, M. L. da
dc.creatorGAMA, M. A. P.
dc.date2020-10-28T09:14:46Z
dc.date2020-10-28T09:14:46Z
dc.date2020-10-27
dc.date2020
dc.date.accessioned2026-06-30T23:49:35Z
dc.descriptionPhosphorus (P) deficiency is one of the main factors that limits productivity in Brazilian soils. However, soil management under no-tillage system (NT) may alter the availability of P in the soil. The objective of this study was to evaluate the dynamics ofP fractions in a dystrophic Yellow Latosol, cropped under no-tillage for a long period of time in the Amazon Biome. The study was conducted on a farm located in the municipality of Paragominas, southeastern Pará. This experiment evaluated plots cultivatedin plots at nine (NT9), 11 (NT11) and 13 (NT13) years of no-tillage system adoption, in one plot under conventional cultivation system (CS) and a surrounding area under native forest (NF) at depths of 0-10, 10-20, 20-30 and 30-40 cm. The soil samples weresubjected to P chemical fractionation to determine the different ractions. The soil management systems showed differential capacity of P accumulation. In the areas under no-tillage, P is accumulated in the toplayer and drastically reduced with depth, while in CS, this reduction is less pronounced. In the 0-20 cm depth layer during the adopted period of the no-tillage system, it was observed an increase in the content of inorganic phosphorus extracted by resin and 0.5 M NaHCO3(PiAERand PiBIC) and organicphosphorus extracted by 0.5 M NaHCO3(PoBIC), fractions considered as available for Biomass. Regardless of the year of adoption, the no-tillage system was superior to CS and NF. This was also observed for the inorganic and organic fractions extracted by NaOH 0.1M(PiHid-0.1and PoHid-0.1)and inorganic fraction extracted by HCl 1M (PiHCl).
dc.identifierJournal of Agricultural Studies, v. 8, n. 3, p. 484-504, 2020.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1125938
dc.identifierhttps://doi.org/10.5296/jas.v8i3.16668
dc.identifier.urihttp://hdl.handle.net/123456789/391209
dc.languageeng
dc.rightsopenAccess
dc.subjectYellow Latosol
dc.subjectPlantio Direto
dc.subjectLatossolo Amarelo
dc.subjectFósforo
dc.subjectProfundidade
dc.subjectNo-tillage
dc.subjectPhosphorus
dc.subjectSoil depth
dc.titlePhosphorus fraction in a yellow latosol cropped under no-tilage system in the brazilian Amazon.
dc.typeArtigo de periódico

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Embrapa Amazonía Oriental (CPATU)