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

Soya bean - Chlorosis

Symptoms
Younger leaves of Zn-deficient plants show interveinal chlorosis and necrotic brown leaf veins.

Reasons
Zinc deficiency The tolerance of Zn deficiency varies strongly between different soybean cultivars.

Soya bean - Chlorosis

Symptoms
Zinc-deficient plants show chlorotic interveinal areas on younger leaves. With ongoing deficiency, necrosis develops on the concerned tissue. Finally, entire leaves may turn brown or gray and drop off.

Reasons
Zinc deficiency The tolerance of Zn deficiency varies strongly between different soybean cultivars.

Soya bean - Chlorosis

Symptoms
Younger leaves of Zn-deficient plants show interveinal chlorosis and necrotic brown leaf veins.

Reasons
Zinc deficiency The tolerance of Zn deficiency varies strongly between different soybean cultivars.

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

  • Correct functioning of enzymes
  • Better synthesis of nucleic acids
  • Improved auxin (plant hormone) metabolism