Premium
Evaluation of Two Methods of Measuring Available Soil Copper and the Effects of Soil pH and Extractable Aluminum on Copper Uptake by Plants
Author(s) -
Blevins R. L.,
Massey H. F.
Publication year - 1959
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1959.03615995002300040020x
Subject(s) - copper , chemistry , soil water , dithizone , environmental chemistry , aluminium , greenhouse , soil ph , poaceae , agronomy , nuclear chemistry , soil science , environmental science , biology , organic chemistry
The relationship between Cu uptake by millet grown in the greenhouse on 34 Kentucky soils and the available Cu in the soil as determined by the versenate procedure of Cheng and Bray and an adaptation of the dithizone procedure for Zn of Shaw and Dean was studied. The pH of the soil and the Al extracted by 0.1 N CaCl 2 were also correlated with Cu uptake. Highly significant correlations between both methods for available Cu and Cu uptake by the millet plants were obtained, but the relatively low values of the correlation coefficients indicate that neither procedure adequately measures available soil Cu. There was no correlation between soil pH and Cu uptake. Al extracted by 0.1 N CaCl 2 was inversely correlated with Cu uptake. The uptake of Cu by wheat plants was decreased by Al concentrations of 0.4 to 1.0 ppm. in short term solution‐culture experiments. An Al concentration of 0.1 ppm. appeared to increase the uptake of Cu.