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Decomposition of Carbon‐14 Labeled Plant Material Under Tropical Conditions
Author(s) -
Jenkinson D. S.,
Ayanaba A.
Publication year - 1977
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1977.03615995004100050020x
Subject(s) - lolium multiflorum , decomposition , soil water , chemical process of decomposition , agronomy , lolium , tropical forest , environmental science , zea mays , poaceae , chemistry , soil science , biology , ecology , organic chemistry
Ryegrass ( Lolium multiflorum ) and maize ( Zea mays ) tissue uniformly labeled with 14 C were mixed with soil and allowed to decompose under field conditions in the open or under shade. The incubations were done in the forest zone of Nigeria, using a range of contrasting Nigerian soils. Of the ryegrass Coriginally added to the soil, 20% remained after 1 year, falling to 14% after 2 years. After 1 year the soil retained slightly less maize C than ryegrass C, but the difference was small and the overall pattern of decomposition similar. There was little difference between the rate of decomposition under shade or in the open, even though soil temperatures were considerably greater in the open. A soil containing 6% clay (Apomu series) retained slightly less maize C after 1 year than a soil with 16% clay (Egbeda series), but in general the decomposition rates in the different soils were similar. For ryegrass, the decomposition pattern was very similar under Nigerian conditions to that previously observed for the same plant material in England, except that the whole decomposition process was four times faster in Nigeria.