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dc.contributor.authorHURTADO, S. M. C.pt_BR
dc.contributor.authorSILVA, C. A.pt_BR
dc.contributor.authorRESENDE, A. V. dept_BR
dc.contributor.authorPINHO, R. G. vonpt_BR
dc.contributor.authorINÁCIO, E. dos S. B.pt_BR
dc.contributor.authorHIGASHIKAWA, F. S.pt_BR
dc.date.accessioned2011-04-10T11:11:11Zpt_BR
dc.date.available2011-04-10T11:11:11Zpt_BR
dc.date.created2010-01-13pt_BR
dc.date.issued2009pt_BR
dc.identifier.citationCiência e Agrotecnologia, Lavras, v. 33, n. 5, p. 1351-1359, set./out. 2009.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/580244pt_BR
dc.descriptionIn Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correctionpt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectGeoestatísticapt_BR
dc.titleSpatial variability of soil acidity attributes and the spatialization of liming requirement for corn.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2018-06-04T11:11:11Zpt_BR
dc.subject.thesagroMilhopt_BR
dc.subject.thesagroZea mayspt_BR
dc.subject.thesagroAgricultura de Precisãopt_BR
riaa.ainfo.id580244pt_BR
riaa.ainfo.lastupdate2018-06-04 -03:00:00pt_BR
dc.identifier.doi10.1590/S1413-70542009000500022pt_BR
dc.contributor.institutionSandro Manuel Carmelino Hurtado, UFLA; Carlos Alberto Silva, UFLA; ALVARO VILELA DE RESENDE, CNPMS; Renzo Garcia von Pinho, UFLA; Euzelina dos Santos Borges Inácio, UFLA; Fábio Satoshi Higashikawa, UFLA.pt_BR
Appears in Collections:Artigo em periódico indexado (CNPMS)

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