Apples - Chlorosis
Symptoms
Symptoms always start at youngest leaves with yellow green, later lemon yellow and pale yellow interveinal chlorosis. Main veins still remain green.
At strong deficiency veins become chlorotic too and necrotic areas appear near leaf margin.
Severe deficiency produces symptoms at older leaves too.
Often young shoots of one tree are different in grade of damaging.
Reasons
Severe Iron deficiency
May be confused with magnesium deficiency. But magnesium deficiency produces symptoms at older leaves first.
Apples - Chlorosis
Symptoms
Symptoms always start at youngest leaves with yellow green, later lemon yellow and pale yellow interveinal chlorosis. Main veins still remain green.
At prolonged deficiency veins become chlorotic too and necrotic spots appear in the chlorotic area of the leaves.
Flowers also show necrotic blotches.Later symptoms extend to older leaves.
Often young shoots of one tree are different in grade of damaging.
Reasons
Severe Iron deficiency
Apples - Chlorosis
Symptoms
Symptoms always start at youngest leaves with yellow green, later lemon yellow and pale yellow to whitish interveinal chlorosis. Main veins still remain green.
Often young shoots of one tree are different in grade of damaging.
Reasons
Severe Iron deficiency
May be confused with magnesium deficiency. But magnesium deficiency produces symptoms at older leaves first.
Iron deficiency made worse by
- High pH
- Water logged soils
- Calcareous soils
- High copper, manganese or zinc soils
Iron is important for
- New growth is healthy and vigorous
- Fruit quality and yield may be improved
Yara recommended fertilizers for Iron
YaraVita FERLEAF 100
Apple: 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 to fruit trees during flowering.
Read more about YaraVita FERLEAF 100
