Pomme - Chlorosis
Symptômes
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.
Raisons
Manganese deficiency
Pomme - Chlorosis
Symptômes
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.
Raisons
Manganese deficiency
Manganese deficiency aggravé par
- Organic soils
- Sandy soils
- High pH
- Cold wet periods
- Fluffy soils
Manganèse est important pour
- Vigorous shoot and leaf growth
- Fruit quality and yield may be improved
Yara a recommandé cet engrais pour Manganèse
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.
En savoir plus YaraVita MANTRAC PRO
