Determinants of Flemingia congesta and Dactyladenia barteri mulch decomposition in alley-cropping systems in the humid tropics.

J. Henrot, L. Brussaard

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Effects of soil macrofauna, micro-environment and mulch quantity were investigated on an acid Ultisol in a high-rainfall area in S.E. Nigeria, using litterbags or littertubes with leaves from the trees of an alley cropping system with t Flemingia congesta or t Dactyladenia barteri as hedgerow species.There was no effect of mulch quantity on the rate of decomposition. Soil macrofauna contributed to between 30 and 40% of mulch decomposition over the period of approximately 50% of disappearance of the original material. The faunal effect became apparent after a longer incubation period (>20 weeks) with the slower decomposing t Dactyladenia than with the t Flemingia mulch (immediate effect). This is presumably related to t Dactyladenia's higher lignin content (40% compared to 22% for t Flemingia). The t Flemingia mulch decomposed faster in alley cropping with t Dactyladenia hedgerow than with t Flemingia hedgerow, irrespective of faunal access, suggesting a microclimate efffect on decomposition. There were no marked changes in chemical composition of the mulches with decomposition period, except for a rapid decrease of K content in both mulches and a rapid increase in lignin content of the t Flemingia mulch within the first 10 days of decomposition, which indicates that early decomposition affected the relatively easily degradable compounds.
Original languageEnglish
Pages (from-to)101-107
JournalPlant and Soil
Volume191
Issue number1
DOIs
Publication statusPublished - 1997

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Flemingia macrophylla
alley cropping
Flemingia
humid tropics
mulch
cropping systems
decomposition
hedgerow
degradation
mulches
lignin
Ultisol
Ultisols
microclimate
Nigeria
soil
incubation
chemical composition
rain
rainfall

Cite this

@article{40711347917143e89ad649295bed92ef,
title = "Determinants of Flemingia congesta and Dactyladenia barteri mulch decomposition in alley-cropping systems in the humid tropics.",
abstract = "Effects of soil macrofauna, micro-environment and mulch quantity were investigated on an acid Ultisol in a high-rainfall area in S.E. Nigeria, using litterbags or littertubes with leaves from the trees of an alley cropping system with t Flemingia congesta or t Dactyladenia barteri as hedgerow species.There was no effect of mulch quantity on the rate of decomposition. Soil macrofauna contributed to between 30 and 40{\%} of mulch decomposition over the period of approximately 50{\%} of disappearance of the original material. The faunal effect became apparent after a longer incubation period (>20 weeks) with the slower decomposing t Dactyladenia than with the t Flemingia mulch (immediate effect). This is presumably related to t Dactyladenia's higher lignin content (40{\%} compared to 22{\%} for t Flemingia). The t Flemingia mulch decomposed faster in alley cropping with t Dactyladenia hedgerow than with t Flemingia hedgerow, irrespective of faunal access, suggesting a microclimate efffect on decomposition. There were no marked changes in chemical composition of the mulches with decomposition period, except for a rapid decrease of K content in both mulches and a rapid increase in lignin content of the t Flemingia mulch within the first 10 days of decomposition, which indicates that early decomposition affected the relatively easily degradable compounds.",
author = "J. Henrot and L. Brussaard",
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doi = "10.1023/A:1004274115587",
language = "English",
volume = "191",
pages = "101--107",
journal = "Plant and Soil",
issn = "0032-079X",
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}

Determinants of Flemingia congesta and Dactyladenia barteri mulch decomposition in alley-cropping systems in the humid tropics. / Henrot, J.; Brussaard, L.

In: Plant and Soil, Vol. 191, No. 1, 1997, p. 101-107.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - Effects of soil macrofauna, micro-environment and mulch quantity were investigated on an acid Ultisol in a high-rainfall area in S.E. Nigeria, using litterbags or littertubes with leaves from the trees of an alley cropping system with t Flemingia congesta or t Dactyladenia barteri as hedgerow species.There was no effect of mulch quantity on the rate of decomposition. Soil macrofauna contributed to between 30 and 40% of mulch decomposition over the period of approximately 50% of disappearance of the original material. The faunal effect became apparent after a longer incubation period (>20 weeks) with the slower decomposing t Dactyladenia than with the t Flemingia mulch (immediate effect). This is presumably related to t Dactyladenia's higher lignin content (40% compared to 22% for t Flemingia). The t Flemingia mulch decomposed faster in alley cropping with t Dactyladenia hedgerow than with t Flemingia hedgerow, irrespective of faunal access, suggesting a microclimate efffect on decomposition. There were no marked changes in chemical composition of the mulches with decomposition period, except for a rapid decrease of K content in both mulches and a rapid increase in lignin content of the t Flemingia mulch within the first 10 days of decomposition, which indicates that early decomposition affected the relatively easily degradable compounds.

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