ISSN:
1432-0789
Keywords:
Mineralisation
;
Immobilisation
;
Humification
;
Microbial biomass
;
Oryza sativa L.
;
Intensive production
;
Continuous flooding
;
Yield decline
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract A decline in rice yields has been associated with intensification of rice production. In continuously irrigated systems this has been attributed to a decline in soil N supply. Nutrient mineralisation and immobilisation is constrained by the quantity and nature of the organic substrates and the physico-chemical environment of the soil system itself. A flooded soil is very different from an aerobic one; electron acceptors other than oxygen have to be used. The transition to continuously anaerobic conditions associated with the intensification of wetland rice systems affects their organic matter turnover and may adversely affect their productivity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00336104
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