Nutrients

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

Olives - Chlorosis

Symptoms
Yellowgreen chlorosis spreading from young leaf tip towards leaf base. Boron deficiency is difficult to be seen in trees in the field. It shows chlorosis in the leaf tips, leaves forms rosettes in new shoots known as “willow brush”, and misshapen fruits.

Reasons
Boron deficiency (two leaves on the right) vs. control Symptoms in leaf may be confused with those originated by calcium deficiency, and those in new shoots caused by Zn deficiency. Sometimes confused with K deficiency.

Olives - Chlorosis

Symptoms
Yellowgreen chlorosis spreading from young leaf tip towards leaf base. Boron deficiency is difficult to be seen in trees in the field. It shows chlorosis in the leaf tips, leaves forms rosettes in new shoots known as “willow brush”, and misshapen fruits.

Reasons
Symptoms in leaf may be confused with those originated by calcium deficiency, and those in new shoots caused by Zn deficiency. Sometimes confused with K deficiency.

Olives - Chlorosis

Symptoms
Yellowgreen chlorosis spreading from young leaf tip towards leaf base. Boron deficiency is difficult to be seen in trees in the field. It shows chlorosis in the leaf tips, leaves forms rosettes in new shoots known as “willow brush”, and misshapen fruits.

Reasons
Symptoms in leaf may be confused with those originated by calcium deficiency, and those in new shoots caused by Zn deficiency. Sometimes confused with K deficiency.

Olives - Chlorosis

Symptoms
Yellowgreen chlorosis spreading from young leaf tip towards leaf base. Boron deficiency is difficult to be seen in trees in the field. It shows chlorosis in the leaf tips, leaves forms rosettes in new shoots known as “willow brush”, and misshapen fruits.

Reasons
Symptoms in leaf may be confused with those originated by calcium deficiency, and those in new shoots caused by Zn deficiency. Sometimes confused with K deficiency.

Boron deficiency vs. control 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

  • Improved bud development
  • Better flowering
  • Improved fruit formation
  • Better skin finish
  • Improved yield

Yara recommended fertilizers for Boron

YaraVita BORTRAC 150

YaraVita BORTRAC 150

Olive: 2-3 l/ha applied at bud break and again at the opening of the calyx if necessary. In addition, one or two applications of 2-3 l/ha at a 10 to 14 day interval post-flowering. Also, 2-3 l/ha applied post-harvest. Water rate: 400-1000 l/ha.

Read more about YaraVita BORTRAC 150

YaraVita BUD BUILDER FL

YaraVita BUD BUILDER FL

Olive: 5 to 10 l/ha applied from bud burst to start of flowering. Water rate: 500 l/ha.

Read more about YaraVita BUD BUILDER FL

Other recommended products

YaraVita MOLYBOR
Olive: 2 to 3 l/ha prior to flowering in the spring. Water rate: 400-1000 l/ha.
YARA SOLUBLE BORON
Olive: 2-3 kg/ha applied at bud break and again at the opening of the calyx if necessary. In addition, one or two applications of 2-3 kg/ha at a 10 to 14 day interval post-flowering. Also, 2-3 kg/ha applied post-harvest. Water rate: 400-1000 l/ha.