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Nitrogen mineralization in lowland rice soils: The role of organic matter quantity and quality

OAR@ICRISAT

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Relation http://oar.icrisat.org/83/
http://dx.doi.org/10.1080/03650340903093158
 
Title Nitrogen mineralization in lowland rice soils: The role of organic matter quantity and quality
 
Creator Sahrawat, K L
 
Subject Soil Science
 
Description Ammonium production in wetland soils and sediments is the key process that
impacts nitrogen (N) availability, wetland productivity and environmental
quality. Significant relationships between organic matter content and mineralizable
N have been reported for diverse groups of wetland rice soils. However,
recent research also showed that in soils under intensified wetland rice production
systems, the relationships between organic matter and mineralizable N are poor
or not significant. The review of recent research suggests that both organic matter
quantity and quality are influenced by prolonged submergence, which in turn
affects mineralization and N supply in wetland soils. While organic matter
quantity increases following prolonged submergence of soil; submergence also
changes the chemistry and quality of soil organic matter, which influences N
mineralization. The increase in N mineralization as a result of increase in organic
matter quantity is countered by the change in the chemistry and quality of organic
matter. The changes in chemical composition of soil organic matter and their
influence on N mineralization in submerged soils are discussed with examples
from recent research.
 
Publisher Taylor & Francis
 
Date 2010
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/83/1/ArchOfAgroSoilSci56_3_337-353_2010.pdf
Sahrawat, K L (2010) Nitrogen mineralization in lowland rice soils: The role of organic matter quantity and quality. Archives of Agronomy and Soil Science, 56 (3). pp. 337-353. ISSN 0365-0340