Impact of Fertilization with Cattle Slurry in a Poplar Short Rotation Coppice on Mass Balance of Nutrients and Biomass Productivity
Rattachement africain : pt. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The incorporation of cattle slurry in soil in short-rotation-cycle poplar cultivations can be a win–win strategy, insofar as a main feedstock derived from local intensive dairy cattle breeding can be used as a natural fertilizer and in bioenergy produced in the same region. The circularity of this process can contribute to boosting local socio-economic value. In this context, this work involved the installation of a poplar SRC plantation with a density of 5330 trees ha−1 in a 4000 m2 moderately fertile flat site, which was formerly used as a vineyard. Mechanical dosages of slurry of 0, 26.6, 53.2, and 106.5 Mg ha−1, designated as treatments T0, T1, T2, and T3, were applied three times per year during 2019, 2020, and 2021. The variables quantified were related to plant growth, biomass productivity and mass balances of K, P, Cu, Zn, Mg, and N, and organic matter in the whole soil, plant, and slurry system during the first rotation cycle. For treatments T0 and T1, all these seven chemical components showed positive balances in the system, with cumulative demand by soil and biomass being higher than cumulative supply by slurry. Negative balances occurred for P with T2 and T3 and for Zn with T3, so that an overall condition of nutrient saturation of the whole system was not achieved. A no-slurry application, or at most a moderate application equivalent to T1, in the second rotation cycle should therefore be prescribed to allow a nutrient equilibrium status to be achieved through internal seasonal recycling mechanisms. The biomass average productivities ranged from 6.1 to 11.8 Mg ha−1 y−1, peaking under treatment T2, and are within the typical values for a first rotation cycle for poplar SRCs. The biomass fuel quality was not affected by the slurry treatments. A good performance of plant total height and growth in diameter at breast height suggested that poplar trees were not stressed by the applied slurry. Only treatment T1 could assure that cattle CO2-eq methane emissions were overall equilibrated by the carbon sequestration from poplar cultivation, with an absence of climatic-warming impacts. Treatments T2 and T3 could only partially minimize that impact, which would always exist. Globally, this site-specific analysis showed that, under moderately fertile conditions, controlled cattle slurry fertilization of poplar SRC cultivations, which would assure a long-term steady-state equilibrium, can be a viable option to contribute to decentralized production of bioenergy in rural communities.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Impact of Fertilization with Cattle Slurry in a Poplar Short Rotation Coppice on Mass Balance of Nutrients and Biomass Productivity
- Date Crossref
- 22/11/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento pays non établi dans la noticeOrganisation à but non lucratif
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University of Lisbon pays non établi dans la noticeUniversité ou école supérieure
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Instituto Nacional de Investigação Agrária e Veterinária pays non établi dans la noticeStructure de recherche
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Instituto Superior Técnico Instituto de Engenharia Mecânica pays non établi dans la noticeStructure de recherche
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Universidade Católica Portuguesa Escola Superior de Biotecnologia pays non établi dans la noticeUniversité ou école supérieure
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Centro de Biotecnologia e Química Fina pays non établi dans la noticeStructure de recherche
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University of Trás-os-Montes and Alto Douro pays non établi dans la noticeUniversité ou école supérieure
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Campo Arqueologico de Mertola pays non établi dans la noticeOrganisation à but non lucratif
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Universidade de Lisboa Instituto Superior Técnico pays non établi dans la noticeUniversité ou école supérieure
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Universidade de Trás-os-Montes e Alto Douro Inov4Agro pays non établi dans la noticeUniversité ou école supérieure
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BIOPOLIS Program in Genomics pays non établi dans la noticeInstitution
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Estação Biológica de Mértola (EBM) pays non établi dans la noticeInstitution
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento, University of Lisbon et Instituto Nacional de Investigação Agrária e Veterinária, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.