Assessing Potential Environmental Impacts of Soil Phosphorus by Soil Testing
2013; Linguagem: Inglês
10.2134/agronmonogr46.c6
ISSN2156-3276
AutoresRory O. Maguire, W.J. Chardon, R. R. Simard,
Tópico(s)Soil Geostatistics and Mapping
ResumoChapter 6 Assessing Potential Environmental Impacts of Soil Phosphorus by Soil Testing Rory O. Maguire, Rory O. Maguire North Carolina State University, Raleigh, North CarolinaSearch for more papers by this authorWim J. Chardon, Wim J. Chardon ALTERRA, Wageningen, The NetherlandsSearch for more papers by this authorRegis R. Simard, Regis R. Simard formerly University of Manitoba, Winnipeg, ManitobaSearch for more papers by this author Rory O. Maguire, Rory O. Maguire North Carolina State University, Raleigh, North CarolinaSearch for more papers by this authorWim J. Chardon, Wim J. Chardon ALTERRA, Wageningen, The NetherlandsSearch for more papers by this authorRegis R. Simard, Regis R. Simard formerly University of Manitoba, Winnipeg, ManitobaSearch for more papers by this author Book Editor(s):J. Thomas Sims, J. Thomas SimsSearch for more papers by this authorAndrew N. Sharpley, Andrew N. SharpleySearch for more papers by this author First published: 01 January 2005 https://doi.org/10.2134/agronmonogr46.c6Citations: 8Book Series:Agronomy Monographs AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onEmailFacebookTwitterLinkedInRedditWechat Summary Sufficient supply of phosphorus (P) to agricultural crops is essential to optimize production and farm income. This chapter focuses on the concentration of P in the soil measured as soil test P (STP). Once the environmental threshold STP is reached, stricter management of P applications comes into effect. STP is not the same as total P, and various soil testing methods have been developed to measure or estimate the fraction of total P that is important for either plant availability, potential environmental impact or both. The chapter discusses the most appropriate soil testing methods and interpretations. As soil sampling recommendations were developed for assessing crop requirements, it is possible that separate soil sampling strategies may be required for environmental soil testing. Several researchers showed that nonconventional soil tests, which are often thought of as environmental soil tests, are only slightly better than conventional soil tests for predicting P losses through surface and subsurface pathways. References Atia, A.M. and A.P. Mallarino. 2002. Agronomic and environmental soil phosphorus testing in soils receiving liquid swine manure. Soil Sci. Soc. Am. J.. 66 1696–1705. 10.2136/sssaj2002.1696 Google Scholar Barber, S.A. 1979. Soil phosphorus after 25 years of cropping with five rates of phosphorus application. Commun. Soil Sci. Plant Anal.. 10 1459–1468. 10.1080/00103627909367000 CASWeb of Science®Google Scholar Barberis, E., F. Ajmone Marsan, R. Scalenghe, A. Lammers, U. Schwertmann, A.C. Edwards, R. Maguire, M.J. Wilson, A. Delgado, and J. Torrent. 1996. 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