Iron deficiency - Strawberry | Yara Ireland

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Nutrients

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With prolonged deficiency also veins turn yellow and necrotic areas appear on leaf margins. Iron deficiency has little effect on fruits. Only with severe deficiency sepals show yellow areas or brown tips.

Reasons
Iron deficiency on leaves and fruits Leaf symptoms may be confused with magnesium or manganese deficiency. But in this cases interveinal yellowing does not start on youngest leaves.

Strawberry - Discolouration

Symptoms
Chlorosis of young leaves with veins remaining green. Leaves become more chlorotic and bleached as deficiency worsens. Eventually leaf margins and interveinal areas become necrotic.

Reasons
Iron Deficiency Iron deficient leaf blades contain less than 40 ppm iron on dry basis. Damage to root system by waterlogging or root damage can produce similar symptoms.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow and necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Severe iron deficiency on leaves Iron deficient leaf blades contain less than 40 ppm iron on dry basis. May be confused with magnesium or manganese deficiency. But in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms as well.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow, while the intercostal tissue becomes almost white. Necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Severe iron deficiency on leaves Iron deficient leaf blades contain less than 40 ppm iron on dry basis. May be confused with magnesium or manganese deficiency. But in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms as well.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow and necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Iron deficiency May be confused with magnesium or manganese deficiency, but in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms. Fe availibility declines as pH increases above 6.5. Iron deficient leaf blades contain less than 40 ppm Fe on dry basis.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow and necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Iron deficiency May be confused with magnesium or manganese deficiency, but in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms. Fe availibility declines as pH increases above 6.5. Iron deficient leaf blades contain less than 40 ppm Fe on dry basis.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow and necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Iron deficiency May be confused with magnesium or manganese deficiency, but in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms. Fe availibility declines as pH increases above 6.5. Iron deficient leaf blades contain less than 40 ppm Fe on dry basis.

Strawberry - Chlorosis

Symptoms
Symptoms always start on youngest leaves with yellow or pale yellow intercostal chlorosis. With ongoing deficiency also veins turn yellow and necrotic areas appear on leaf margins and spread over whole leaves. Plant growth is stunted.

Reasons
Iron deficiency (right) May be confused with magnesium or manganese deficiency, but in these cases interveinal yellowing does not start on youngest leaves. Damage to root system by waterlogging or root damage can produce similar symptoms. Fe availibility declines as pH increases above 6.5. Iron deficient leaf blades contain less than 40 ppm Fe on dry basis.

Iron deficiency made worse by

High pH
Water logged soils
Calcareous soils
High copper, manganese or zinc soils

Iron is important for

Stronger plants
Healthier plants
Gives plants more resistance to cold weather

Yara recommended fertilizers for Iron

YaraVita FERLEAF 100

YaraVita FERLEAF 100

Strawberry (field grown): 1 litre/ha in 1,000 litres of water, repeated 3-8 times at 7-14 day intervals. Applications should commence as soon as there is sufficient leaf cover (preventative treatment) or as soon as first symptoms are seen (curative treatment). Do not apply during flowering.

Read more about YaraVita FERLEAF 100

Other recommended products

YaraTera KRISTALON BLUE LB

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTALON GREEN LB

Strawberry (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced for protected crops using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTALON RED

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.