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Redox Potential and pH as Major Drivers of Fertility in Submerged Rice Soils: A Conceptual Framework for Management

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Relation http://oar.icrisat.org/8976/
http://dx.doi.org/10.1080/00103624.2015.1043451
 
Title Redox Potential and pH as Major Drivers of Fertility in Submerged Rice Soils: A Conceptual Framework for Management
 
Creator Sahrawat, K L
 
Subject Soil Science
 
Description Submerging soil creates a series of changes that have important implications for fertility and its management in wetland rice. Wetland rice makes an important contribution to the global rice supply and is often cited as an example of a sustainable production system. We little realize that flooding soil is a powerful driver of changes in fertility and nutrient availability via two most important determinants of soil fertility—pH and redox potential (Eh). The fundamental role of pH in regulating the dynamics of major and micronutrients, toxins, and reduction products in soil solution is well known and used to optimize rice production through management; however, the role of Eh, although equally important, is not appreciated and hence not fully exploited in developing improved fertility management practices. From a synthesis of global literature, this article presents a conceptual framework for the dynamics of soil organic matter and plant nutrients in terms of the combined effects of pH and Eh in submerged rice soils. It is hoped that the conceptual framework proposed would aid in developing efficient agronomic practices for better management of rice-based systems.
 
Publisher Taylor & Francis
 
Date 2015
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/8976/1/PA.pdf
Sahrawat, K L (2015) Redox Potential and pH as Major Drivers of Fertility in Submerged Rice Soils: A Conceptual Framework for Management. Communications in Soil Science and Plant Analysis, 46 (13). pp. 1597-1606. ISSN 0010-3624