Apples - Chlorosis
Symptoms
Symptoms start at young, fully developed and medium leaves. They show yellow green or yellow interveinal chlorosis. Veins and streaks along the veins remain green.
Sometimes leaves look like a mosaic, because also fine veins remain green.
Later necrotic spots, sometimes white in colour, and necrotic blotches appear.
Causes
Manganese deficiency
Apples - Chlorosis
Symptoms
Symptoms start at young, fully developed and medium leaves. They show yellow green or yellow interveinal chlorosis. Veins and adjacent tissue remain green.
Sometimes leaves look like a mosaic, because also fine veins remain green.
Later necrotic spots, sometimes white in colour, and necrotic blotches appear.
Causes
Manganese deficiency
Manganese deficiency made worse by
- Organic soils
- Sandy soils
- High pH
- Cold wet periods
- Fluffy soils
Manganese is important for
- Vigorous shoot and leaf growth
- Fruit quality and yield may be improved
Yara recommended fertilisers for Manganese deficiency
YaraVita MANTRAC PRO
Apple: 1 l/ha prior to flowering (for severe deficiency), otherwise at petal fall. Repeat 10-14 days later. Water rate: 500-1,000 l/ha.
Read more about YaraVita MANTRAC PRO
