Copper availability is low on humic, sandy, friable soil, on soil with a high pH-value, during cold or in waterlogged or very dry soils.
Symptoms of copper deficiency
Copper deficieny is shown by twisted flag leaf and twisted younger leaves, shrivelling leaf tips, blind grain sites on ears, poor grain formation, stunted plants. Especially in oats, wheat and barley; rye and triticale are less sensitive.
What is copper important for?
- Protein metabolism
- Lignin synthesis
- Protective function of plants (immune system)
Whereby copper deficiency is enhanced?
- Humus-rich, sandy, loose soil
- High pH value
- Coldness and moisture
- High nitrogen fertilisation
- Severe drying