In a muck soil or soil having higher organic matter content, which deficiency of which element will be encountered first?

In a muck soil or soil having higher organic matter content, deficiency of Copper (Cu) is encountered first.
A muck soil is usually a peat deposit that has drained and cultivated and in which the surface layer has undergone considerable oxidation and disintegration of the original peat fibres.n it is sapric soil that is naturally waterlogged or artificially drained.