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| DOI: | 10.1016/0038-0717(94)90181-3 |
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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/0038071794901813
Last checked: 12/15/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hameed, R.;
Cortez, J.;
Bouche, M. B. |
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| Author Affiliation: | Centre d'Ecologie Fonctionnelle Et Evolutive, Montpellier, France |
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| Title: | Biostimulation de la croissance de Lolium perenne L. par l'azote excrete par Lumbricus Terrestris L. - Mesure au laboratoire de ce debit |
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| Source: | Soil Biology & Biochemistry. Vol. 26, No. 4, April 1994, p. 483-493. |
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| Publishing Information: | Amsterdam, The Netherlands: Elsevier |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: Biomass determination; Earthworm castings; Earthworms; Growth analysis; Growth factors; Growth retardation; Lolium perenne; Lumbricus terrestris; Nitrogen; Nutrient availability; Nutrient concentration
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| Abstract/Contents: | "The effect of earthworms (Lumbricus terrestris L.) on plant (Lolium perenne L.) growth (total plant biomass, leaves to roots ratios), and the partitioning of C and N between plants, earthworms and microbial biomass were studied in microcosms under controlled conditions for 42 and 65 days. Lumbricus terrestris was fed with 15N-labelled or unlabelled litter, depending on the experiment. Three experiments were carried out. (1) After 113 days plants (Lolium perenne L.) were no longer growing despite regular addition of 15N-labelled litter of low C:N ratio (9.5) regularly brought to microcosms. Then one earthworm (Lumbricus terrestris L.) was introduced into each microcosm and was fed with unlabelled litter during the next 65 days (experiment called "avec lombriciens introduits"). The plants decreased their 15N enrichment and, in addition, the total plant biomass and the N concentration in plants (mg g-1 plant) significantly increased. 1. (2) Plants were grown from seed in microcosms already containing a L. terrestris (experiment called "avec lombriciens maintenus"). After 113 days, the growth of plants seemed arrested but during the next 42 days, the plants grew again. To explain this phenomenon the authors suggest that earthworms ingested their faeces again, and then released N and other nutrients that had been complexed to microbial biomass, so stimulating plant growth, 2. (3) The nitrogen flow (mg day-1) through L. terrestris was measured in microcosms. Values obtained by direct measurement and by calculation were in agreement. Daily nitrogen flux varied from 13.6% to 14.3% of total body nitrogen, depending on the experiment. This difference could indicate that L. terrestris principally ingests litter but also surface and subsurface casts." |
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| Language: | French |
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| References: | 37 |
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| Note: | English summary as abstract
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hameed, R., J. Cortex, M. B. Bouche, J. Cortez, and M. B. Bouche. 1994. Biostimulation de la croissance de Lolium perenne L. par l'azote excrete par Lumbricus Terrestris L. - Mesure au laboratoire de ce debit. (In French) Soil Biol. Biochem. 26(4):p. 483-493. |
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| DOI: 10.1016/0038-0717(94)90181-3 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/0038071794901813
Last checked: 12/15/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2217194 |
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