Long-term nitrogen dynamics in various catch crop scenarios: Test and simulations with STICS model in a temperate climate
| Autor: | Julie Constantin, Marie Launay, Nicolas Beaudoin, Bruno Mary, Jérôme Duval |
|---|---|
| Přispěvatelé: | Beaudoin, Nicolas, Agrosystèmes et impacts environnementaux carbone-azote (Agro-Impact), Institut National de la Recherche Agronomique (INRA), Agroclim (AGROCLIM), ARVALIS Institut du Vegetal, Région Picardie, Agence de l'Eau Seine-Normandie, PIREN Seine |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
0106 biological sciences
Mineralization Cover crop Nitrate Leaching Sequestration Fertilization Climate change Modelling Simulation lessivage du sol eau du sol 01 natural sciences modèle de culture chemistry.chemical_compound Temperate climate Leaching (agriculture) 2. Zero hunger [SDV.EE]Life Sciences [q-bio]/Ecology environment azote changement climatique Ecology fungi food and beverages 04 agricultural and veterinary sciences Mineralization (soil science) culture derobée 15. Life on land Agronomy chemistry 13. Climate action Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Animal Science and Zoology minéralisation Arable land Catch crop Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Agriculture, Ecosystems and Environment (147), 36-46. (2012) Agriculture, Ecosystems and Environment Agriculture, Ecosystems and Environment, Elsevier Masson, 2012, 147, pp.36-46. ⟨10.1016/j.agee.2011.06.006⟩ |
| ISSN: | 0167-8809 |
| DOI: | 10.1016/j.agee.2011.06.006⟩ |
| Popis: | CT3 ; CT1 ; EnjS4 ; EnjS1 ; Dispositif expérimental de longue durée ; Base de données Agroclim; International audience; The long term effects of repeated catch crops on N dynamics in arable farming were assessed using mid-term experiments and long-term simulations. The soil-crop model STICS (v6.9) was tested against a database provided by three experiments (13–17 years) carried out in Northern France, including treatments with or without repeated catch crops. STICS performance was checked for crop biomass, N uptake, soil water content and mineral N at harvest of main crops, drained water, N leaching and mineralization rates. The model satisfactorily reproduced these variables, except for soil mineral N and N leached at one site. N leached was predicted with a slight bias, between −3 and +7 kg N ha−1 yr−1, and soil N mineralized was simulated with a bias lower than 7 kg N ha−1 yr−1. The model simulated correctly the N uptake by catch crops and the kinetics of extra N mineralization due to catch crops. Seven scenarios varying in the presence of catch crops, fertilization rate and climate were simulated on long-term (60 years); their effects on N uptake, soil N storage, N mineralization and nitrate leaching were compared by difference with a control scenario. Repeated catch crops lead to reduce N leaching, sequester organic N and increase N mineralization. The model indicated that the sequestered N reached a maximum of 430–750 kg N ha−1 after 23–45 years depending on site. The extra-mineralization due to catch crops progressively increased up to 38–65 kg N ha−1 yr−1. A strategy of constant N fertilizer rate resulted in raising the N uptake of main crops and slowing down the abatement of nitrate leaching. Conversely, when N fertilization rates were reduced by 20–24 kg N ha−1 yr−1, crop production remained stable and catch crops reduced N leaching on the long term by 33–55%. Therefore catch crop is a promising technique for controlling the N cascade. |
| Databáze: | OpenAIRE |
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