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Title: Cotton, wheat and white lupin differ in phosphorus acquisition from sparingly soluble sources
Contributor(s): Wang, Xiaojuan (author); Tang, Caixian (author); Guppy, Christopher  (author)orcid ; Sale, Peter WG (author)
Publication Date: 2010
DOI: 10.1016/j.envexpbot.2010.04.007
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Abstract: Low responsiveness of cotton to P fertilizer application on soils with low soil-test P values indicates that cotton might take up P from stable P pools. The ability of cotton to acquire P from sparingly soluble P sources was examined by comparing with wheat and white lupin. The plants were grown in washed river sand, with P sources applied at a rate of 40 mg P kg⁻¹, as sparingly soluble AlPO₄, FePO₄, or hydroxyapatite. Cotton was inefficient in accessing P from any of the sparingly soluble P sources. Thus, the low responsiveness of cotton to P fertilizers could be attributed to factors other than efficient P acquisition from the stable P pool in the soil. In contrast to white lupin which accessed little P from the sparingly soluble P sources in this study, wheat showed an outstanding ability in utilizing AlPO₄. When compared with the control, total uptake of P from AlPO₄ by wheat was approximately 9 times higher than cotton and 7 times higher than white lupin, which was possibly related to its high root Al concentration and high root:shoot ratio. The study concludes that the three species differed substantially in P acquisition from the sparingly soluble AlPO₄, with cotton being least efficient and wheat most efficient.
Publication Type: Journal Article
Source of Publication: Environmental and Experimental Botany, 69(3), p. 267-272
Publisher: Elsevier BV
Place of Publication: The Netherlands
ISSN: 1873-7307
Field of Research (FOR): 050304 Soil Chemistry (excl Carbon Sequestration Science)
070306 Crop and Pasture Nutrition
Socio-Economic Outcome Codes: 820301 Cotton
820507 Wheat
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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