Evaluation of three commercial herbaceous legumes, with and without poultry manure addition, for the early protection of burnt soils
Organic amendments combined with gramineous sowing are effective for early protection of burnt soils (BS), but insufficient to restore the pre-fire soil N status, leading to interest for their use combined with N2 fixer legumes. Usefulness of poultry manure (PM; 2 Mg ha-1) and legumes sowing (Lotus...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/78899 |
| Acesso em linha: | http://hdl.handle.net/10261/78899 |
| Access Level: | acceso abierto |
| Palavra-chave: | N availability Soil conservation wildfires |
| Resumo: | Organic amendments combined with gramineous sowing are effective for early protection of burnt soils (BS), but insufficient to restore the pre-fire soil N status, leading to interest for their use combined with N2 fixer legumes. Usefulness of poultry manure (PM; 2 Mg ha-1) and legumes sowing (Lotus corniculatus, Lupinus polyphyllus and Trifolium repens) for early protection of BS was compared with that of PM + Lolium perenne and these four species without PM in a 3-month pot experiment, which also included a control unburnt soil (US). In US, shoots and roots biomass increased as follows: Trifolium . Lotus<<Lolium < Lupinus. Compared with those from US, plants from BS were smaller and weaker in three species (Lupinus, Lolium and Trifolium); the reverse was true for the four species in BS+PM, showing the benefits of PM addition. In all treatments, plant N uptake, which prevents soil-N losses, increased as follows: Trifolium . Lotus < Lupinus < Lolium. The lack of nodules suggested that no legume fixed atmospheric-N2. |
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