Nutrients

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

Corn - Chlorosis

Symptoms
Severely affected leaf (left) shows red and purple tints with interveinal streaky lesions. Whilst mildly affected leaf (centre and right) shows interveinal chlorosis and streaky lesions only.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow/white stripes show red and purple tints and streaky lesions.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. White necrotic spots later develop within these chlorotic zones which coalesce to necrotic stripes between the veins. With progressing deficiency the tips and edges may die off. Growth of plant is normal, unless deficiency is severe.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. Yellow to white stripes or typical beaded lesions occur; tissue along the main vein stays green for the longest time.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. Yellow to white stripes or typical beaded lesions occur; tissue along the main vein stays green for the longest time.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Corn - Chlorosis

Symptoms
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.

Reasons
Magnesium deficiency. Iron and manganese deficiencies show similar symptoms but begin at younger leaves.

Magnesium deficiency made worse by

  • Sandy soils
  • Acidic soils
  • Potassium rich soils
  • Soils receiving high potash applications
  • Cold wet periods

Magnesium is important for

  • Good plant development early in the season
  • Improves yield
  • Brings forward harvest date

Yara recommended fertilizers for Magnesium

YaraVita® HYDROMAG™

YaraVita® HYDROMAG™

Maize/Sweetcorn: 4 l/ha (1.6 l/acre) at 4 to 6 leaf stage. Water rate: 200 l/ha (80 l/acre). Maïs/Maïs doux: 4 l/ha au stade 4-6 feuilles. Volume d'eau: 200 l/ha.

Read more about YaraVita® HYDROMAG™

Other recommended products

YaraVita® HYDROPHOS™
Maize/Sweetcorn: 5 l/ha at the 4 to 6 leaf stage. Repeat at 10 to 14 day intervals if necessary. Water rate: 30 to 200 l/ha. Maïs/Maïs doux: 5 l/ha au stade 4-6 feuilles. Répéter à 10-14 jours d'intervalle si nécessaire. Volume d'eau: 30 à 200 l/ha.