Copper deficiency made worse by
- Organic soils
- Chalky soils
- Sandy soils
- Reclaimed heathland
- High nitrogen applications
Copper is important for
- Increased fertility (number of grains per ear)
- Better grain quality
Yara recommended fertilizers for Copper
YaraVita COPTRAC 500
Cereals: 175 to 500 ml/ha. From 4 leaf stage to start of stem extension (G.S. 30). Water rate: 50-200 l/ha.
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Cereals: 1 l/ha from the 2 leaf stage in the autumn (Zadok's G.S. 12). Also, 2 l/ha from main shoot and 7 tillers to flag leaf just visible (Zadok's G.S. 27 to 37). In addition, 1 l/ha from flag leaf fully emerged to the end of booting (Zadok's G.S. 39 to 49). Water rate: 200 l/ha.
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