Journal ArticleDOI
Evaluation of tests for predicting the availability of soil manganese to plants
TLDR
The best prediction of Mn uptake was provided by a combination of CH3COONH4-extractable Mn and pH; 52·9 % of the variability in Mn uptakewas accounted for by these two variables.Abstract:
SUMMARY Eight soil Mn tests, namely, CH3COONH4-, Mg(NO3)2-, H3PO4-, hydroquinone-, 3m-NH4H2PO4-,1·5m-NH4H2PO4- and EDTA-extractable Mn and total Mn were evaluated for their ability to predict Mn uptake by maize (Zea mays L.) on 63 soils of diverse origin. Regression equations were derived by comparing Mn uptake with each test in combination with pH. The best prediction of Mn uptake was provided by a combination of CH3COONH4-extractable Mn and pH; 52·9 % of the variability in Mn uptake was accounted for by these two variables. EDTA and H3PO4-extractable Mn were superior to the other soil Mn tests in predicting Mn uptake. The effect of soil properties on the extractability of soil Mn by each extractant was analysed statistically. Only with hydroquinone-extractable Mn did the soil variables investigated account for a major portion of the variability in the Mn test. The soil variables most often correlated significantly with the Mn test were pH and total Mn. Organic carbon and clay contents were significant only in determining EDTA- and Mg(NO3)2-extractable Mn, respectively.read more
Citations
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Journal Article
Manganese 色料 散考
TL;DR: In this paper, the authors describe a lustrous, silvery solid; silvery or greyish flakes or chunks of Manganese are used to construct test strips and to measure the strength of a sample.
Book ChapterDOI
Testing soils for copper, iron, manganese, and zinc.
W. L. Lindsay,D. C. Martens +1 more
Journal ArticleDOI
Edaphic Climax Pattern of the Pygmy Forest Region of California
TL;DR: A ranking of stands along a soil nutrient gradient, based on field observations and presence data for species, correlated successively less strongly with ordinations computed by similarity—projection, Bray—Curtis method, importance— projection, principal components analysis, and factor analysis.
Journal ArticleDOI
Comparative lime requirements of tropical and temperate legumes
D. N. Munns,R. L. Fox +1 more
TL;DR: Improved calcium availability could account for plant responses to lime rates over 3 to 4 tons/ha, and response curves showed no distinct general difference between tropical and temperate legumes.
Influence of Disposal Environment on Availability and Plant Uptake of Heavy Metals in Dredged Material.
TL;DR: In this paper, heavy metal uptake by Cyperus esculentus from 15 highly contaminated freshwater sediments under reduced (flooded) and oxidized (upland) disposal conditions was investigated in the greenhouse.
References
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An Examination of the Degtjareff Method for Determining Soil Organic Matter, and a Proposed Modification of the Chromic Acid Titration Method
A Walkley,I A Black +1 more
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Journal Article
Manganese 色料 散考
TL;DR: In this paper, the authors describe a lustrous, silvery solid; silvery or greyish flakes or chunks of Manganese are used to construct test strips and to measure the strength of a sample.
Journal ArticleDOI
Contribution of organic matter and clay to soil cation- exchange capacity as affected by the ph of the saturating solution
TL;DR: The effect of pH of buffered saturating solution on the cation-exchange capacity (CEC) of 60 Wisconsin soils was determined within the pH range 2.5 to 8.0 as discussed by the authors.
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