threshold of minimum and maximum soil elements ON SOIL QUALITY

Farzaneh Derakhshan Babaei @Farzaneh-Derakhshan-Babaei

01 January 1970 0 733 Report

I need the threshold of minimum and maximum soil elements such as calcium, magnesium, etc. on soil quality. I searched a lot, but unfortunately I didn't find a reference for this. Can anyone help?

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