Relationship between soil neutral sugar composition and the amount of labile soil organic matter in Andisol treated with bark compost or leaf litter |
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| Authors: | T Murata N Nagaishi R Hamada H Tanaka K Sakagami T Kato |
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| Institution: | (1) Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183, Japan Fax 81 423 67 5675, JP;(2) Tokyo Metropolitan Agricultural Station, Fujimi, Tachikawa, Japan, JP |
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| Abstract: | The effect of short-term bark compost (Ba) and leaf litter (Li) applications on the labile soil organic matter (SOM) status
was investigated. The SOM status studied in this paper includes soil microbial biomass, soil available N, hot water extractable
C (HwC) and N (HwN) and soil neutral sugar-C composition. The soil microbial biomass C (MBC) and N (MBN), soil available N,
HwC and HwN increased upon application of Ba and Li. No quantitative relationship was observed between application of organic
material and MBC, MBN or soil available N. A positive linear correlation was observed between MBN and HwC but not between
MBN and soil available N. Among the various soil neutral sugar C, xylose C (Xyl) content in Ba plots showed a remarkable increase
but mannose C (Man) did not differ among Fer (fertilizer), Ba or Li plots. Soil neutral sugar C had a positive linear correlation
with soil available N, MBN and HwC. The proportion of MBN : TN is positively correlated with the Xyl/Man ratio. The increase
in the proportion of MBN in SOM seems to occur with the increase of SOM derived from plant debris.
Received: 20 October 1997 |
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| Keywords: | Organic material application Hot water extractable C Soil microbial biomass Soil neutral sugar Soil available N |
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