NDLI: The use of DGT for prediction of plant available copper, zinc and phosphorus in agricultural soils

Content Provider	Springer Nature Link
Author	Tandy, S. Mundus, S. Yngvesson, J. Bang, T. C. Lombi, E. Schjoerring, J. K. Husted, S.
Copyright Year	2011
Abstract	Soil chemical extractions are widely used to predict the nutritional status of soils. However, the correlation between extracted elements and plant uptake is often poor, especially if compared over a range of soil types. The aim of this study was to examine a new method called Diffusive Gradients in Thin films (DGT), which measures the diffusive supply of elements, thereby mimicking a plant root. The ability of DGT to assess plant-available P, Zn and Cu was tested in a wide range of typical Scandinavian agricultural soils along with conventional methods (EDTA and DTPA for Cu and Zn; NaHCO$_{3}$ for P and soil solution concentrations). Extracted soil concentrations were compared to that of the element in the youngest fully developed leaf of barley (Hordeum vulgare L.) grown in pots. For Zn and P, only DGT could predict plant uptake while conventional extraction methods and soil solution analyses performed poorly. All soil tests could predict Cu concentration in leaves, but the DGT technique proved to be most accurate followed by the soil solution concentration of Cu. We conclude that DGT is much more accurate at predicting plant-available P, Zn and Cu than commonly used methods for analysing plant-available nutrients in soil.
Starting Page	167
Ending Page	180
Page Count	14
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	346
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-05-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	DGT Cu Zn P EDTA DTPA Soil solution Micronutrients Nutrient availability Soil Science & Conservation Plant Sciences Ecology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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