Liu, Jian and Khalaf, Rafa Abdulhassan and Ulen, Barbro and Bergkvist, Göran
(2013).
Potential phosphorus release from catch crop shoots and roots after freezing-thawing.
Plant and soil. 371
:1-2
, 543-557
[Research article]
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Abstract
Background and Aims Catch crops used for mitigating nutrient losses to water can release phosphorus (P) when exposed to repeated freezing-thawing cycles (FTCs). This study sought to evaluate potential P losses from shoots and roots of eight catch crops. Methods Shoots and roots sampled from perennial ryegrass (Lolium perenne L.), cocksfoot (Dactylis glomerata L.), chicory (Cichorium intybus L.), phacelia (Phacelia tanacetifolia L.), red clover (Trifolium pratense L.), white mustard (Sinapis alba L.), oilseed radish (Raphanus sativus var. oleiformis L.) and white radish (R. sativus var. longipinnatus L.) were treated with no freezing, one single FTC, four continuous FTCs and four discontinuous FTCs. All samples were analysed for water-extractable P (WEP), and root samples also for characteristics such as specific root surface area (SSA). Results Freezing-thawing significantly increased potential P losses from both shoots and roots compared with no freezing. The two radish species and white mustard contained significantly higher concentrations of WEP than the other species, among which chicory and phacelia had the lowest WEP. On average, shoots had 43% higher WEP than roots. Cumulative P release from shoots and roots was strongly correlated with their total-P content (p=0.006 and p=0.002, respectively). Cumulative release of P from taproots was correlated with SSA (p=0.03). Conclusions Chicory, and possibly phacelia, appear to be promising catch crops for P.
Authors/Creators: | Liu, Jian and Khalaf, Rafa Abdulhassan and Ulen, Barbro and Bergkvist, Göran | ||||||
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Title: | Potential phosphorus release from catch crop shoots and roots after freezing-thawing | ||||||
Series Name/Journal: | Plant and soil | ||||||
Year of publishing : | 2013 | ||||||
Volume: | 371 | ||||||
Number: | 1-2 | ||||||
Page range: | 543-557 | ||||||
Number of Pages: | 15 | ||||||
Publisher: | Springer | ||||||
ISSN: | 0032-079X | ||||||
Language: | English | ||||||
Additional Information: | Publicerad open access med Springer. Copyright författarna. | ||||||
Publication Type: | Research article | ||||||
Refereed: | Yes | ||||||
Article category: | Scientific peer reviewed | ||||||
Version: | Published version | ||||||
Full Text Status: | Public | ||||||
Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use | ||||||
Keywords: | Water-extractable phosphorus, Catch crop, Cover crop, Root morphology, Freezing-thawing, Climate change | ||||||
URN:NBN: | urn:nbn:se:slu:epsilon-e-1985 | ||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1985 | ||||||
Additional ID: |
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Alternative URL: | http://link.springer.com/content/pdf/10.1007%2Fs11104-013-1716-y.pdf | ||||||
ID Code: | 11229 | ||||||
Faculty: | NL - Faculty of Natural Resources and Agricultural Sciences (until 2013) | ||||||
Department: | (NL, NJ) > Dept. of Crop Production Ecology (NL, NJ) > Dept. of Soil and Environment (S) > Dept. of Soil and Environment | ||||||
Deposited By: | SLUpub Connector | ||||||
Deposited On: | 30 Jun 2014 09:18 | ||||||
Metadata Last Modified: | 10 Dec 2014 09:07 |
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