Lime responses by barley as related to available soil aluminium and manganese [soil acidity; mineral toxicity; test procedures]

Samples of 23 surface soils from lime trials were incubated at 6 rates of lime and used in pot trials with barley, grown for 5 weeks. Each pot was tested for exchangeable cations, pH, and four different estimators of aluminium availability. Soil tests were compared for their prediction of the dry ma...

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Published inAustralian journal of agricultural research Vol. 42; no. 3
Main Authors Conyers, M.K, Poile, G.J, Cullis, B.R. (New South Wales Agriculture and Fisheries, Wagga (Australia). Agricultural Research Inst.)
Format Journal Article
LanguageEnglish
Published 1991
Subjects
ALUMINIO
ALUMINIUM
ANALISIS DEL SUELO
ANALYSE DE SOL
CHAULAGE
ENCALADO
HORDEUM VULGARE
MANGANESE
MANGANESO
NUTRIENTES
SOL ACIDE
SUBSTANCE NUTRITIVE
SUELO ACIDO
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Summary:Samples of 23 surface soils from lime trials were incubated at 6 rates of lime and used in pot trials with barley, grown for 5 weeks. Each pot was tested for exchangeable cations, pH, and four different estimators of aluminium availability. Soil tests were compared for their prediction of the dry matter yield of whole tops. The four tests of Al were each better indicators of the infertility of the acid soils than soil pH; their prediction of DM yield was improved by the inclusion of exchangeable soil Mn in the statistical analysis. The use of 0.01 M CaCl2 is recommended as a routine extraction procedure for diagnosing Al toxicity. Soil Mn should also be measured and included in correlations with crop growth. Pyrocatechol violet is the recommended analytical procedure for Al owing to its comparative simplicity.
Bibliography:H50
P35
9102140
ISSN:0004-9409
DOI:10.1071/AR9910379