Earthworms (Millsonia anomala, Megascolecidae) do not increase rice growth through enhanced nitrogen mineralization

Abstract : Earthworms have been shown to increase plant growth in 75% of the experiments that have compared plant growth in their presence and absence. However, the relative importance of the different mechanisms advanced to explain such a stimulatory effect has never been tested. In a laboratory experiment, we observed increased growth of rice plants in the presence of earthworms (Millsonia anomala, Megascolecidae) and demonstrated that enhanced nitrogen release (generally considered as the principal mechanism involved in earthworm positive effect on plants) was not responsible for this result: earthworms had the same stimulatory effect on plant growth (+20%) irrespective of whether the soil (provided with different amounts of mineral-N fertilizer) was either N-limited or N-saturated. We discuss alternative explanations for the observed variations in rice production.
Document type :
Journal articles
Complete list of metadatas

Cited literature [30 references]  Display  Hide  Download

https://hal-bioemco.ccsd.cnrs.fr/bioemco-00448744
Contributor : Manuel Blouin <>
Submitted on : Wednesday, January 20, 2010 - 10:01:08 AM
Last modification on : Thursday, March 21, 2019 - 1:02:40 PM
Long-term archiving on : Thursday, June 17, 2010 - 11:04:18 PM

Files

Blouin_et_al.pdf
Files produced by the author(s)

Identifiers

Citation

Manuel Blouin, Sébastien Barot, Patrick Lavelle. Earthworms (Millsonia anomala, Megascolecidae) do not increase rice growth through enhanced nitrogen mineralization. Soil Biology and Biochemistry, Elsevier, 2006, 38, pp.2063-2068. ⟨10.1016/j.soilbio.2005.12.023⟩. ⟨bioemco-00448744⟩

Share

Metrics

Record views

562

Files downloads

464