Joint International Conference on Long-term Experiments ...

SUMMARY
27 soil samples with various soil properties were extracted by three different methods,
LE and KCL-EDTA extracted nearly the same Zn and Cu amounts, while the buffered
DTPA-CaCl2 extracted only half - third of that. We suppose that LE and KCl-EDTA
solve such micronutrients forms that are not available for plants. The extracted Zn and
Cu amounts showed good correlation in most of the cases. To determine the exact
relationship between the extractants further studies are required.
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