Nitrogen mineralisation rates from chicory-based pastures
Rattachement africain : au. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The incorporation of chicory (Cichorium intybus) into phased crop-pasture farming systems requires an understanding of the dynamics of nitrogen (N) mineralisation of residues and the potential supply of N to subsequent crops. A 3-year field experiment was conducted to compare relative N mineralisation rates from the pure chicory pasture, compared to the chicory-subterranean clover (Trifolium subterraneum) or lucerne (Medicago sativa)-subterranean clover pastures. Existing pastures were chemically fallowed in either spring or the following autumn. Soil mineral N and soil gravimetric water content were measured at 0, 6 and 12 months after pasture removal. Six months after pasture removal, chicory-subterranean clover pasture exhibited the highest N mineralisation rate for the spring and autumn removals (0.36 and 0.37 kg mineral N ha−1 day−1, respectively), whereas lucerne-subterranean clover pasture had the lowest for the spring and autumn removals (0.04 and 0.05 kg mineral N ha−1 day−1, respectively). However, the daily N mineralisation rate for the lucerne-subterranean clover pasture increased dramatically to 0.51 and 0.98 kg mineral N ha−1 day−1 12 months after pastures were removed in spring and autumn, respectively. In contrast, the chicory pasture produced 0.15 vs 0.63 kg mineral N ha−1 day−1 for the spring and autumn removals, respectively. Including subterranean clover in mixtures with chicory significantly increased the availability of mineral N by 28% with the spring removal and 45% with the autumn removal compared to the pure chicory pasture. Due to the quicker rate of N mineralisation with chicory-based pastures, an opportunity exists to remove chicory-based pastures later than lucerne-based pastures without having a detrimental effect on N supply to the following crop while still providing additional feed for livestock.
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
- Nitrogen mineralisation rates from chicory-based pastures
- Date Crossref
- 01/04/2024
- Éditeur
- Elsevier BV
- 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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Charles Sturt University The Gulbali Institute pays non établi dans la noticeUniversité ou école supérieure
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Wagga Wagga Base Hospital pays non établi dans la noticeÉtablissement de santé
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New South Wales Department of Primary Industries pays non établi dans la noticeOrganisme public
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Agricultural Marketing and Production Systems pays non établi dans la noticeInstitution
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School of Agricultural pays non établi dans la noticeUniversité ou école supérieure
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Wagga Wagga Agricultural Institute NSW Department of Primary Industries pays non établi dans la noticeStructure de recherche
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Retired pays non établi dans la noticeInstitution
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NSW Department of Primary Industries pays non établi dans la noticeInstitution
The Gulbali Institute — Charles Sturt University, Wagga Wagga Base Hospital et New South Wales Department of Primary Industries, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.