On farm analysis of the effect of the preceding crop on N uptake and grain yield of durum wheat (Triticum durum Desf.) in Mediterranean conditions

Ben Zekri Yosser, Barkaoui Karim, Marrou Hélène, Mekki Insaf, Belhouchette Hatem, Wery Jacques. 2019. On farm analysis of the effect of the preceding crop on N uptake and grain yield of durum wheat (Triticum durum Desf.) in Mediterranean conditions. Archives of Agronomy and Soil Science, 65 (5) : 596-611.

https://doi.org/10.1080/03650340.2018.1514111

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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	Version publiée - Anglais Accès réservé aux personnels Cirad Utilisation soumise à autorisation de l'auteur ou du Cirad. On farm analysis of the effect of the preceding crop on N uptake and grain yield of durum wheat Triticum durum Desf in Mediterranean conditions.pdf Télécharger (2MB) \| Demander une copie

Quartile : Q2, Sujet : AGRONOMY / Quartile : Q3, Sujet : SOIL SCIENCE

Résumé : One of the challenges of eco-efficient agriculture is the development of operational farming practices to increase the level of agricultural production, maximize the efficiency of resource use and reduce environmental impacts. Based on the efficiency frontier concept and the decomposition of resource use efficiency, we used a three-quadrant framework allowing to carry a functional analysis of the cropping system. Using a data envelope approach, we established boundary curves which represent the maximum achievable performances (yield, N uptake) when N is the only limiting factor. This framework has been first implemented and tested using published data from 112 agronomic situations of rainfed durum wheat in experimental fields in northern Syria and then further applied on a data set of 245 agronomic situations of durum wheat in farmers' fields in two grain-producing regions of Tunisia. The results demonstrated the impact of preceding crops: durum wheat following legumes or vegetable showed a higher potential for N uptake but with only a minor effect on its conversion into grains. This positive effect of diversified rotation on potential N uptake by durum wheat is partly of-set by increased N uptake gaps in farmer's fields indicating a higher effect of other limiting factors.

Mots-clés Agrovoc : rendement des cultures, rotation culturale, absorption de substances nutritives, Triticum durum

Mots-clés géographiques Agrovoc : Tunisie, République arabe syrienne

Mots-clés libres : Eco-efficiency, Resource efficiency, Crop succesion, N-uptake gap

Classification Agris : F08 - Systèmes et modes de culture
P35 - Fertilité du sol

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Auteurs et affiliations