Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Mo Molybdenum
Zn Zinc

Cereals - Deformation

Symptoms
Ears of Cu deficient plants are often trapped in the sheath and emerge with white tips and blind spikelets. Plants show dry, white and twisted or curled leaf tips (white tip). Young leaves wilt on their tips, whereas the basal leaves remain dark green.

Reasons
Copper deficiency. Severe drought, heavy frosts and herbicide damage can cause blind ears, too.

Cereals - Wilting

Symptoms
Young leaves show dry, white and twisted or curled leaf tips (white tip). The basal leaves remain dark green. The complete plant growth is stunted.

Reasons
Copper deficiency.

Cereals - Wilting

Symptoms
Young leaves show dry, white and twisted or curled leaf tips (white tip). The basal leaves remain dark green. The complete plant growth is stunted.

Reasons
Copper deficiency.

Cereals - Deformation

Symptoms
Ears of Cu deficient plants are often trapped in the sheath and emerge with white tips and blind spikelets. Less severe symptoms may be seen as curved ears which do not ripen with an accumulation of the dark coloured melanin.

Reasons
Copper deficiency.

Cereals - Deformation

Symptoms
Ears are often trapped in the sheath and emerge with white tips and blind spikelets. Plants show dry, white and twisted or curled leaf tips (white tip).

Reasons
Copper deficiency.

Cereals - Deformation

Symptoms
Ears are often trapped in the sheath and emerge with white tips and blind spikelets. Less severe symptoms may be seen as curved ears which do not ripen, often with an accumulation of the dark coloured melanin.

Reasons
Copper deficiency.

Cereals - Size reduced

Symptoms
Ears of Cu deficient plants show blind grain sites (blind spikelets) or poor grain formation.

Reasons
Copper deficiency (right ear). Cereal plants deficient in copper often suffer from increased pollen sterility and lower pollen fertility resulting in reduced seed set. Severe drought, heavy frosts and herbicide damage can cause blind ears, too.

Cereals - Size reduced

Symptoms
Ears of Cu deficient plants show blind grain sites (blind spikelets) or poor grain formation. As the ears are lightweight they stand more upright than sufficiently supplied ones and give the plant a different habitus.

Reasons
Copper deficiency.

Copper deficiency made worse by

  • Organic soils
  • Calcareous 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™

YaraVita® COPTRAC™

Cereals (Wheat, Barley, Oats): 0.5 l/ha from 2 leaf stage to second node detectable (Zadok’s G.S. 12 to 32). For moderate to severe deficiency, repeat the application once or twice at 10 to 14 day intervals within these growth stages. Water rate: 50 to 200 l/ha. For aerial application apply 0.25 l/ha at the timings described above. Water rate: 50 l/ha Céréales (Blé, Avoine, Orge ): 0.5 l/ha à partir du stade 2 feuilles jusqu’au stade deuxième noeud décelable (Zadok’s 12 – 32). En cas de carence moyenne ou sévère, répéter l’application une ou deux fois à 10 à 14 jours d’intervalle entre ces stades. Volume d’eau: 50 à 200 l/ha. Pour applications par avion appliquer 0.25 l/ha à ces mêmes stades. Volume d’eau: 50 l/ha.

Read more about YaraVita® COPTRAC™

Other recommended products

YaraVita® OPTITREL™
Cereals (Wheat, Barley, Oats): 1 to 3 l/ha from 2 leaf stage to second node detectable (Zadok's G.S. 12 to 32). For moderate to severe deficiency repeat applications at 7 to 14 day intervals as necessary within these growth stages. Water rate: 30 to 200 l/ha. Céréales (Blé, Avoine, Orge): 1 to 3 l/ha du stade 2 feuilles au deuxième noeud décelable (Zadok's 12 à 32). En cas de carence moyenne ou sévère répéter l'application à 10 à 14 jours d'intervalle entre ces stades. Volume d'eau: 30 à 200 l/ha.