Zinc deficiency-Olives | Yara New Zealand

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Nutrients

Olives - Deformation

Symptoms
Marginal chlorosis in the olive leaves. Leaves usually are stunted and grouped in rosettes at the branch apex.

Reasons
Zinc deficiency Symptoms are similar to those created by Mg and Mn deficiencies except for the rosettes at the apex of the branch, which can be confused with B deficiency.

Olives - Chlorosis

Symptoms
Marginal chlorosis in the olive leaves. Leaves usually are stunted and grouped in rosettes at the branch apex.

Reasons
Zinc deficiency Symptoms are similar to those created by Mg and Mn deficiencies except for the rosettes at the apex of the branch, which can be confused with B deficiency.

Olives - Chlorosis

Symptoms
Marginal chlorosis in the olive leaves. Leaves usually are stunted and grouped in rosettes at the branch apex.

Reasons
Zinc deficiency (leaves on the right) Symptoms are similar to those created by Mg and Mn deficiencies except for the rosettes at the apex of the branch, which can be confused with B 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

Combats chlorosis
Prevents premature leaf fall
Gives healthier greener trees
Improves resistance to cold weather and late frosts
Improves bud development, flowering and fruit set
Better internode length

Yara recommended fertilizers for Zinc

YaraVita BUD BUILDER FL

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

YaraVita ZINTRAC 700

Olive: 1 l/ha applied at bud break and again at the opening of the calix. Water rate: 500 l/ha.