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Titre du document / Document title

Soil pH and magnesium effects on manganese toxicity in peanuts

Auteur(s) / Author(s)

DAVIS J. G. (1) ;

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

(1) Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523-1170, ETATS-UNIS

Résumé / Abstract

Manganese (Mn) toxicity can develop in peanuts grown on low pH soils. The objectives of this study were to quantify the impact of soil pH and magnesium (Mg) on the uptake of Mn and the development of Mn toxicity symptoms in peanut plants and to evaluate the use of the Mg:Mn ratio as a diagnostic tool for Mn toxicity in peanuts. Three greenhouse tests were utilized to meet these objectives: a study to determine dolomitic limestone effects, an experiment comparing rate effects of calcium (Ca), Mg, and potassium (K) on Mn toxicity, and a test to separate the effects of pH, Mn, and Mg on Mn toxicity. Soil, leaf, and stem samples were taken for analysis, and toxicity ratings were made. Increasing pH diminished the toxicity rating and leaf Mn concentration and increased the leaf Mg:Mn ratio. The toxicity rating was significantly correlated with both leaf Mn and Mg:Mn ratio, but leaf Mn generally had stronger correlations and was more useful in diagnosis. Magnesium application resulted in a marked reduction in the Mn toxicity rating and leaf and stem Mn concentrations in the second experiment; however, this result was not repeated in the final test. Using Mg to prevent Mn toxicity would require large Mg applications, which could have the serious detrimental effect of interfering with Ca uptake by the peanut fruit. Liming is the more practical method for avoidance of Mn toxicity in peanuts.

Revue / Journal Title

Journal of plant nutrition    ISSN  0190-4167   CODEN JPNUDS 

Source / Source

1996, vol. 19, no3-4, pp. 535-550 (1 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

Taylor & Francis, Philadelphia, NJ, ETATS-UNIS  (1979) (Revue)

Mots-clés anglais / English Keywords

Quantitative analysis

;

Uptake

;

Diagnosis

;

Interelement effect

;

Edaphic factor

;

Plant leaf

;

Lesion

;

pH

;

Phytotoxicity

;

Arachis hypogaea

;

Magnesium

;

Manganese

;

Ratio

;

Symptomatology

;

Stem

;

Leguminosae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Property of soil

;

Bioinorganic chemistry

;

Methodology

;

Nutrition

;

Soil plant relation

;

Grain legume

;

Oil plant(vegetal)

;

Limestone

;

Inorganic element

;

Group VIIA metal

;

Trace element (nutrient)

;

Poison

;

Soils

;

Ultisols

;

Soil chemistry

;

Mots-clés français / French Keywords

Analyse quantitative

;

Captation

;

Diagnostic

;

Effet interélément

;

Facteur édaphique

;

Feuille végétal

;

Lésion

;

pH

;

Phytotoxicité

;

Arachis hypogaea

;

Magnésium

;

Manganèse

;

Ratio

;

Symptomatologie

;

Tige

;

Calcaire dolomitique

;

Kandiudult plinthique arénique

;

Kandiudult rhodique

;

Leguminosae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Caractéristique sol

;

Chimie biominérale

;

Méthodologie

;

Nutrition

;

Relation sol plante

;

Légumineuse grain

;

Plante oléagineuse

;

Calcaire

;

Elément minéral

;

Métal groupe VIIA

;

Oligoélément

;

Toxique

;

Sol

;

Ultisol

;

Chimie du sol

;

Mots-clés espagnols / Spanish Keywords

Análisis cuantitativo

;

Captación

;

Diagnóstico

;

Efecto interelemento

;

Factor edáfico

;

Hoja vegetal

;

Lesión

;

pH

;

Fitotoxicidad

;

Arachis hypogaea

;

Magnesio

;

Manganeso

;

Ratio

;

Sintomatología

;

Tallo

;

Leguminosae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Característica suelo

;

Química bioinorgánica

;

Metodología

;

Nutrición

;

Relación suelo planta

;

Leguminosa grano

;

Planta oleaginosa

;

Calcáreo

;

Elemento inorgánico

;

Metal grupo VIIA

;

Oligoelemento

;

Tóxico

;

Suelo

;

Ultisols

;

Química del suelo

;

Localisation / Location

INIST-CNRS, Cote INIST : 18386, 35400004433950.0060

Nº notice refdoc (ud4) : 3046546



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