Full TGIF Record # 12645
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1988.tb01885.x/epdf
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Publication Type:
Author(s):Larsson, K.; Steen, E.
Author Affiliation:National Swedish Laboratory for Agricultural Chemistry, and Dept. of Ecology and Environmental Research, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Title:Changes in Mass and Chemical Composition of Grass Roots During Decomposition
Source:Grass and Forage Science. Vol. 43, No. 2, June 1988, p. 173-177.
Publishing Information:Oxford, Blackwell Scientific Publications
Keywords:TIC Keywords: Chemical composition; Roots; Decomposition; Lolium perenne
Abstract/Contents:"The decmoposition of dead roots of perennial grasses was examined in nylon litter bags not containing soil at two soil depths, 10 and 20cm, and also in larger nylon bags containing soil at 0-20 cm depth. Bags were sampled three times during the growing season to determine weights of organic matter, crude protein, Klason lignin and non-structural and structural carbohydrates. From 3 July to 5 October (94 days) the litter bags at 10 and 20 cm and the nylon bags lost, respectively, 35, 38 and 65% of their organic mass of particle size > 1 mm. Non-structural carbohydrates constituted 6% of the organic matter in the original sample but only 1% or less during the sampling period. Klason lignin increased from 22 to 29% and crude protein from 8 to 10% of the remaining organic matter, whereas structural carbohydrates changed very little. The constituents were degraded at different rates. The non-structural carbohydrates had decomposed almost completely by the first sampling and of the other constituents the structural carbohydrates were degraded most rapidly. Before the first sampling unexpected amounts of structural carbohydrates, particularly glucans, had disappeared. The results help to explain rapid declines in root mass (up to 50%) during summer in perennial grass leys observed in earlier experiments."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Larsson, K., and E. Steen. 1988. Changes in Mass and Chemical Composition of Grass Roots During Decomposition. Grass Forage Sci. 43(2):p. 173-177.
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    Last checked: 10/02/2015
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MSU catalog number: SB 197 .B7
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