Titre du document / Document title

Heavy metal uptake by Lolium italicum and root mortality as affected by salt water irrigation

Auteur(s) / Author(s)

HELAL H. M. ⁽¹⁾ ; RAMADAN A. ⁽²⁾ ; AZAM F. ⁽³⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Federal Agricultural Research Centre (FAL), Braunschweig, ALLEMAGNE
⁽²⁾ Federal Republic of Germany Environmental Department, Atomic Energy Authority (AEA), Cairo, EGYPTE
⁽³⁾ Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, PAKISTAN

Résumé / Abstract

The use of saline waters to grow crops on increasingly metal polluted soils is becoming a common practice in the arid regions. Nevertheless, the effects of soil and water salinity on heavy metal fluxes in polluted areas are not well understood. The aim of this study was to evaluate in pot experiments the plant uptake of Zinc, Cadmium and Copper from a polluted alluvial aridisol as affected by salt water irrigation. Fertilized soil material was planted in pots with L. italicum for 18 weeks under greenhouse conditions. The plants were irrigated either with water or with salt solution of variable Na/Ca ratio and harvested every 5-7 weeks. In addition to elemental analysis of plants and soil extracts, root length was determined by a gridline intersect method and the viable part of the roots was estimated by a root protein index. Saline (Na) water irrigation increased heavy metal solubility in soil, reduced root viability and enhanced the uptake of Na, Cd, Cu and Zn by L. italicum. Ca counteracted these effects partly. The presented results demonstrate a dual effect of salinity on heavy metal availability to plants and suggest a relationship between root mortality and the enhanced heavy metal uptake by salt stressed plants.

Revue / Journal Title

Les Colloques de l'I.N.R.A.   ISSN 0293-1915 

Source / Source

Congrès
Contaminated soils :   ( Paris, 15-19 May 1995 (Full proceedings on CD-ROM) )
International conference on the biogeochemistry of trace elements N^o3, Paris , FRANCE (15/05/1995)
1997-  , n^o 85, pp. 189-194[Note(s) :  [523 p.]] (8 ref.) ISBN 2-7380-0775-9 ;  Illustration : Illustration ;

Langue / Language

Anglais
Revue : Anglais

Editeur / Publisher

INRA, Versailles, FRANCE  (1981-2005) (Revue)
INRA, Paris, FRANCE  (1997) (Monographie)

Mots-clés anglais / English Keywords

Absorption ; Irrigation ; Mortality ; Soil pollution ; Salinity ; Stress ; Root ; Lolium multiflorum ; Brackish water ; Heavy metal ; Cadmium ; Copper ; Zinc ; Aridisols ; Alluvial soil ; Cultivated soil ; Experimental study ; Egypt ; POLLUTED SOIL ; POT EXPERIMENTATION ; Gramineae ; Monocotyledones ; Angiospermae ; Spermatophyta ; Africa ; Water management ; Biogeochemistry ; Pollutant behavior ; Environment ; Environmental factor ; Phytotoxicity ; Soil plant relation ; Fodder crop ; Trace element ; Arid region ; Subtropical zone ;

Mots-clés français / French Keywords

Absorption ; Irrigation ; Mortalité ; Pollution sol ; Salinité ; Stress ; Racine ; Lolium multiflorum ; Eau saumâtre ; Métal lourd ; Cadmium ; Cuivre ; Zinc ; Aridisol ; Sol alluvial ; Sol cultivé ; Etude expérimentale ; Egypte ; SOL POLLUE ; EXPERIMENTATION EN POT ; Gramineae ; Monocotyledones ; Angiospermae ; Spermatophyta ; Afrique ; Aménagement hydraulique ; Biogéochimie ; Devenir polluant ; Environnement ; Facteur milieu ; Phytotoxicité ; Relation sol plante ; Plante fourragère ; Elément trace ; Zone aride ; Zone subtropicale ;

Mots-clés espagnols / Spanish Keywords

Absorción ; Irrigación ; Mortalidad ; Polución suelo ; Salinidad ; Stress ; Raíz ; Lolium multiflorum ; Agua salobre ; Metal pesado ; Cadmio ; Cobre ; Zinc ; Aridisols ; Suelo aluvial ; Suelo cultivado ; Estudio experimental ; Egipto ; SUELO CONTAMINADO ; EXPERIMENTACION EN CONTENEDOR ; Gramineae ; Monocotyledones ; Angiospermae ; Spermatophyta ; Africa ; Aprovechamiento hidráulico ; Biogeoquímica ; Evolución contaminante ; Medio ambiente ; Factor medio ; Fitotoxicidad ; Relación suelo planta ; Planta forrajera ; Elemento traza ; Zona árida ; Zona subtropical ;

Localisation / Location

INIST-CNRS, Cote INIST : 22459, 35400007637953.0110