Interaction of silicon and phosphorus mitigate manganese toxicity in rice in a highly weathered soil

Tavakkoli, Ehsan and English, Peter and Guppy, Chris (2011) Interaction of silicon and phosphorus mitigate manganese toxicity in rice in a highly weathered soil. Communications in Soil Science and Plant Analysis, 42 (5). pp. 503-513. ISSN 0010-3624

Abstract

Many researchers have reported beneficial effects of silicon (Si) on plant growth when available phosphorus (P) is low, but the reasons for this are poorly understood. Factorial application of three levels of Si and four levels of P to rice plants grown in Red Ferrosol interacted to increase rice growth and Si and P uptake (P < 0.01). Application of Si with P increased P uptake by <120%. Although Si application affected P uptake, yield increases were more likely associated with reduced manganese (Mn) toxicity, particularly as the P/Mn and P/iron ratios increased with increasing Si application. Further research is necessary to determine if the beneficial effects of Si application on P nutrition occur where adequate P is supplied or is limited to situations where alternate nutritional or disease limitations affect growth.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Mr Ehsan Tavakkoli
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 12 Jun 2011 09:07
Last Modified: 05 Jun 2012 03:23
Uncontrolled Keywords: manganese toxicity, phosphorus, P/Mn, P/Fe, silicon, rice, wollastonite
Fields of Research (FOR2008): 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9614 Soils > 961499 Soils not elsewhere classified
Identification Number or DOI: doi: 10.1080/00103624.2011.546931
URI: http://eprints.usq.edu.au/id/eprint/18741

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