Publications des scientifiques de l'IRD

Blouin Manuel, Barot Sébastien, Lavelle Patrick. (2006). Earthworms (Millsonia anomala, Megascolecidae) do not increase rice growth through enhanced nitrogen mineralization. Soil Biology and Biochemistry, 38 (8), p. 2063-2068. ISSN 0038-0717.

Titre du document
Earthworms (Millsonia anomala, Megascolecidae) do not increase rice growth through enhanced nitrogen mineralization
Année de publication
2006
Type de document
Article référencé dans le Web of Science WOS:000240183900006
Auteurs
Blouin Manuel, Barot Sébastien, Lavelle Patrick
Source
Soil Biology and Biochemistry, 2006, 38 (8), p. 2063-2068 ISSN 0038-0717
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. (c) 2006 Elsevier Ltd. All rights reserved.
Plan de classement
Biologie du sol [074]
Localisation
Fonds IRD [F A010037592]
Identifiant IRD
fdi:010037592
Contact