Crop growth and nutrient acquisition under phosphorus gradients in a model legume tree-cereal intercropping system

Isaac Marney E., Harmand Jean-Michel, Hinsinger Philippe. 2010. Crop growth and nutrient acquisition under phosphorus gradients in a model legume tree-cereal intercropping system. In : Proceedings of Agro 2010 : the XIth ESA Congress, August 29th - September 3rd, 2010, Montpellier, France. Wery Jacques (ed.), Shili-Touzi I. (ed.), Perrin A. (ed.). Montpellier : Agropolis international, 283-284. ISBN 978-2-909613-01-7 ESA Congress. 11, Montpellier, France, 29 Août 2010/3 Septembre 2010.

Résumé : In the current geopolitical context, the development of nutrient-conserving systems in agriculture environments is increasingly urgent, particularly with the rise of inaccessible or undesirable fertilizer use (Sanchez 2002; Vitousek et al. 2009). Thus, the advancement of low-input agriculture dependent on plant-based nutrient supply, such as through N2-fixation, is very important for best management practices. Deciphering nutrient acquisition strategies is necessary to encourage positive interactions for improved low-input agriculture. However, accurate estimates of nutrient sources, rhizosphere uptake and mineral transfer processes under varying abiotic gradients are necessary to minimize interspecific competition in intercropped production systems (Vance et al. 2003; Isaac et al. 2007). Our research objectives were to 1) compare plant performance and rhizosphere processes along a pre-contact P gradient in an N2-fixing tree-cereal crop association in comparison to a monoculture crop, and 2) quantify N and P acquisition and N transfer from the N2-fixing tree to the crop with varying root contact intensity.

Mots-clés Agrovoc : Acacia senegal, Triticum turgidum

Classification Agris : F08 - Systèmes et modes de culture
F61 - Physiologie végétale - Nutrition
F04 - Fertilisation
F62 - Physiologie végétale - Croissance et développement

Auteurs et affiliations

• Isaac Marney E.
• Harmand Jean-Michel, CIRAD-PERSYST-UPR Ecosystèmes de plantations (FRA) ORCID: 0000-0002-8065-106X
• Hinsinger Philippe, INRA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/557224/)

Métriques

[ Page générée et mise en cache le 2024-03-24 ]