Nutrients

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

Cotton - Chlorosis

Symptoms
Young leaves show a diffuse interveinal chlorosis. Subsequently necrotic, sunken patches appear on the marginal or interveinal area.

Reasons
Boron deficiency B leaching from sandy soils, but also reduced uptake in dry periods may cause Boron undersupply.

Cotton - Chlorosis

Symptoms
Young leaves show a diffuse interveinal chlorosis. Subsequently necrotic, sunken patches appear on the marginal or interveinal area.

Reasons
Boron deficiency B leaching from sandy soils, but also reduced uptake in dry periods may cause Boron undersupply.

Boron deficiency made worse by

  • Sandy soils
  • Alkaline soils
  • Soils low in organic matter
  • High levels of nitrogen
  • High levels of calcium
  • Cold wet weather
  • Periods of drought

Boron is important for

  • Better boll set
  • Increased yields

Yara recommended fertilizers for Boron

YaraVita BORTRAC

YaraVita BORTRAC

Cotton: 1-2 l/ha applied at 4 to 6 leaf stage, appearance of first squares and again at first open flowers stage. Water rate: 50-150 l/ha.

Read more about YaraVita BORTRAC