Zinc deficiency-Wheat | Yara New Zealand

Symptoms
Affected plants are paler in colour than normal and the leaves have a purplish tint. Necrotic spots (often light brown with dark margin) occur on the older leaves. Growth is also reduced due the affect of zinc on chlorophyll function. Internodes are shortened.

Reasons
Zinc deficiency

Cereals - Chlorosis

Symptoms
Medium leaves show interveinal chlorosis.

Reasons
Zinc deficiency on durum wheat

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

Increased fertility (number of grains per ear)
Better grain quality

Yara recommended fertilizers for Zinc

YaraVita GRAMITREL

Cereals: 1 l/ha from the 2 leaf stage in the autumn (Zadok's G.S. 12). Also, 2 l/ha from main shoot and 7 tillers to flag leaf just visible (Zadok's G.S. 27 to 37). In addition, 1 l/ha from flag leaf fully emerged to the end of booting (Zadok's G.S. 39 to 49). Water rate: 200 l/ha.

YaraVita ZINTRAC 700

Cereals: 300 ml to 1 l/ha from 2 leaf stage to first node detectable (Zadok's G.S. 12 to 31). Water rate: 50-200 l/ha.