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https://hdl.handle.net/2440/1997
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dc.contributor.author | Lombi, E. | - |
dc.contributor.author | McLaughlin, M. | - |
dc.contributor.author | Johnston, C. | - |
dc.contributor.author | Armstrong, R. | - |
dc.contributor.author | Holloway, R. | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Soil Science Society of America Journal, 2004; 68(2):682-689 | - |
dc.identifier.issn | 0361-5995 | - |
dc.identifier.issn | 1435-0661 | - |
dc.identifier.uri | http://hdl.handle.net/2440/1997 | - |
dc.description.abstract | Phosphorus availability is a major factor limiting crop production in highly calcareous soils. Recent field trials on calcareous soils in southern Australia have shown that fluid fertilizers may provide a useful alternative to granular fertilizer products. Fluid sources of P enhance P uptake and yield when compared with granular fertilizers applied at the same rate. This work aimed to compare the behavior of one fluid (technical grade monoammonium phosphate, TG-MAP) and one granular (monoammonium phosphate, MAP) form of P fertilizer in a highly calcareous soil. Changes in soil pH, P diffusion, solubility, and lability (using isotopic dilution techniques) were determined at different distances from the point of application over 5 wk. Furthermore, reaction products in MAP granules were investigated using spectroscopic techniques. The results indicated that P from fluid TG-MAP diffused more and was more available than P supplied as granular MAP. Also, X-ray diffraction (XRD) and energy dispersive X-ray microanalyses (EDXMA) of the MAP granules indicated that a significant percentage (12%) of the initial P remained in the granules even after 5 wk of incubation in the soil. The enhanced P availability of fluid fertilizers observed in field trials compared with granular forms is discussed in relation to differences in the dissolution, diffusion, and reaction processes in soils. | - |
dc.description.statementofresponsibility | E. Lombi, M. J. McLaughlin, C. Johnston, R. D. Armstrong and R. E. Holloway | - |
dc.language.iso | en | - |
dc.publisher | Soil Sci Soc Amer | - |
dc.rights | © 2004 Soil Science Society of America | - |
dc.source.uri | http://soil.scijournals.org/cgi/content/abstract/68/2/682 | - |
dc.title | Mobility and lability of phosphorus from granular fluid monoammonium phosphate differs in a calcareous soil | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.2136/sssaj2004.6820 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | McLaughlin, M. [0000-0001-6796-4144] | - |
Appears in Collections: | Aurora harvest 2 Earth and Environmental Sciences publications Environment Institute publications |
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