Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands
The aim of the study was to evaluate the potential impact of grazing on the control of Mimosa pudica, a ligneous weed species that invades grasslands in French Guiana. Three experiments were conducted in a glass-house to test the potential impact of: (i) shading by testing different Photsynthetically Active Radiation (PAR) fluxes on seedlings and (ii) cutting of juveniles, at three stages of development, on their survival, flowering rate and nutritive value as measured by the mass:length ratio of stems and by branching processes. A significant mortality rate (0.20) was obtained only for seedlings at the cotyledon stage when the PAR flux was reduced proportionately by 0.83. Shading reduced both flowering rate and mass:length ratio of stems. For seedlings at the cotyledon stage, the flowering rate decreased from 0.85 for the control to zero for the low light treatment (0.13 of PAR flux of the control treatment). The mass:length ratio of stems of seedlings in the low light treatment was reduced to 0.20 of that of control seedlings, at the fifth-leaf stage. Cutting treatment had no effect on mortality of juvenile plants whatever the size of the juvenile plant. The proportion of juvenile plants flowering was high for all cutting treatments. It is suggested that regular, but not continuous grazing, could maintain a dense sward to limit recruitment by seedling establishment and seed production, and maintain branched and juvenile plants with a high-nutritive value at the seedling stage.
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dig-cirad-fr-5377142023-06-23T09:29:44Z http://agritrop.cirad.fr/537714/ http://agritrop.cirad.fr/537714/ Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands. Magda D., Duru Michel, Huguenin Johann, Gleizes B.. 2006. Grass and Forage Science, 61 (1) : 89-96.https://doi.org/10.1111/j.1365-2494.2006.00512.x <https://doi.org/10.1111/j.1365-2494.2006.00512.x> Researchers Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands Magda, D. Duru, Michel Huguenin, Johann Gleizes, B. eng 2006 Grass and Forage Science L02 - Alimentation animale The aim of the study was to evaluate the potential impact of grazing on the control of Mimosa pudica, a ligneous weed species that invades grasslands in French Guiana. Three experiments were conducted in a glass-house to test the potential impact of: (i) shading by testing different Photsynthetically Active Radiation (PAR) fluxes on seedlings and (ii) cutting of juveniles, at three stages of development, on their survival, flowering rate and nutritive value as measured by the mass:length ratio of stems and by branching processes. A significant mortality rate (0.20) was obtained only for seedlings at the cotyledon stage when the PAR flux was reduced proportionately by 0.83. Shading reduced both flowering rate and mass:length ratio of stems. For seedlings at the cotyledon stage, the flowering rate decreased from 0.85 for the control to zero for the low light treatment (0.13 of PAR flux of the control treatment). The mass:length ratio of stems of seedlings in the low light treatment was reduced to 0.20 of that of control seedlings, at the fifth-leaf stage. Cutting treatment had no effect on mortality of juvenile plants whatever the size of the juvenile plant. The proportion of juvenile plants flowering was high for all cutting treatments. It is suggested that regular, but not continuous grazing, could maintain a dense sward to limit recruitment by seedling establishment and seed production, and maintain branched and juvenile plants with a high-nutritive value at the seedling stage. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/537714/1/537714.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/j.1365-2494.2006.00512.x 10.1111/j.1365-2494.2006.00512.x http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=195977 info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2494.2006.00512.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/j.1365-2494.2006.00512.x |
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L02 - Alimentation animale L02 - Alimentation animale Magda, D. Duru, Michel Huguenin, Johann Gleizes, B. Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
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The aim of the study was to evaluate the potential impact of grazing on the control of Mimosa pudica, a ligneous weed species that invades grasslands in French Guiana. Three experiments were conducted in a glass-house to test the potential impact of: (i) shading by testing different Photsynthetically Active Radiation (PAR) fluxes on seedlings and (ii) cutting of juveniles, at three stages of development, on their survival, flowering rate and nutritive value as measured by the mass:length ratio of stems and by branching processes. A significant mortality rate (0.20) was obtained only for seedlings at the cotyledon stage when the PAR flux was reduced proportionately by 0.83. Shading reduced both flowering rate and mass:length ratio of stems. For seedlings at the cotyledon stage, the flowering rate decreased from 0.85 for the control to zero for the low light treatment (0.13 of PAR flux of the control treatment). The mass:length ratio of stems of seedlings in the low light treatment was reduced to 0.20 of that of control seedlings, at the fifth-leaf stage. Cutting treatment had no effect on mortality of juvenile plants whatever the size of the juvenile plant. The proportion of juvenile plants flowering was high for all cutting treatments. It is suggested that regular, but not continuous grazing, could maintain a dense sward to limit recruitment by seedling establishment and seed production, and maintain branched and juvenile plants with a high-nutritive value at the seedling stage. |
format |
article |
topic_facet |
L02 - Alimentation animale |
author |
Magda, D. Duru, Michel Huguenin, Johann Gleizes, B. |
author_facet |
Magda, D. Duru, Michel Huguenin, Johann Gleizes, B. |
author_sort |
Magda, D. |
title |
Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
title_short |
Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
title_full |
Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
title_fullStr |
Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
title_full_unstemmed |
Impact of shading and cutting on the demography and composition of Mimosa pudica L., a ligneous weed species of tropical grasslands |
title_sort |
impact of shading and cutting on the demography and composition of mimosa pudica l., a ligneous weed species of tropical grasslands |
url |
http://agritrop.cirad.fr/537714/ http://agritrop.cirad.fr/537714/1/537714.pdf |
work_keys_str_mv |
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1769605075513114624 |