Nutrients

N Nitrogen
K Potassium
Ca Calcium
S Sulphur
B Boron
Fe Iron
Mn Manganese
Zn Zinc

Rice - Discolouration

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer while.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Discolouration

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer time. Tips of older leaves wither and become white.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Discolouration

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer time. With ongoing deficiency the complete leaf blade turns bronze to brown.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Growth retardation

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer while.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Chlorosis

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer while.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Chlorosis

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer while.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Rice - Necrosis

Symptoms
Older leaves show a bronze tint starting from the leaf margins thus the midrib remains green for a longer while.

Reasons
Zinc Deficiency (Hudda disease - Pakistan, Khaira disease - India) Rice is sensitive to Zn deficiency.

Zinc deficiency made worse by

  • Organic soils
  • High pH soils
  • Soils rich in phosphorus
  • Soils receiving high phosphorus application
  • Cold wet conditions

Zinc is important for

  • Efficient photosynthesis (sugar production)
  • Healthy crop
  • Strong, early vigour
  • Grain formation (yield)