Kirk G.J.D., George Thomas, Courtois Brigitte, Senadhira D.. 1998. Opportunities to improve phosphorus efficiency and soil fertility in rainfed lowlad and upland rice ecosystems. Field Crops Research, 56 (1/2) : 73-92.
Version publiée
- Anglais
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Résumé : The use of improved germplasm and management to increase rice production in rainfed lowland and upland systems is discussed. Understanding of the mechanisms conferring P efficiency, particularly external efficiency through root-induced changes in the rhizosphere, is reviewed together with evidence for genetic variation in P efficiency in upland and lowland rice germplasm. The following areas for improving resource and input management are considered: P management under alternately wet and dry soil conditions; P fertilizer formulations for banding in highly-weathered soils; cumulative responses to P fertilizer, including interactions with biological N fixation by legumes; amelioration of subsoil acidity, especially by eaching down the effects of surface-applied lime; and the management of soil spatial variability. Areas for future research are given.
Mots-clés Agrovoc : Oryza, riz inondé, riz pluvial, phosphore, germoplasme, engrais phosphaté, fertilité du sol, relation plante sol, rhizosphère, pH du sol, propriété physicochimique du sol, amélioration des plantes, gestion du sol
Classification Agris : P35 - Fertilité du sol
F30 - Génétique et amélioration des plantes
Auteurs et affiliations
- Kirk G.J.D.
- George Thomas
- Courtois Brigitte, CIRAD-CA-CALIM (PHL) ORCID: 0000-0003-2118-7102
- Senadhira D.
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/391813/)
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