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) : pp. 73-92.
Abstract : 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. (Résumé d'auteur)
Mots-clés Agrovoc : Oryza, Riz inondé, Riz pluvial, Phosphore, Germplasm, 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 - Soil fertility
F30 - Plant genetics and breeding
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
- Localisation du document : CD_PE1291 [(Bibliothèque de Lavalette)]
Source : Cirad - Agritrop (https://agritrop.cirad.fr/391813/)
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