Tomato - Chlorosis
Symptoms
Plants deficient in Fe show chlorosis of intercostal areas of young leaves, followed by yellowing of whole shoot tips.
At severe deficiency, the leaves may become nearly white, and the veins are chlorotic, too.
Reasons
Iron deficiency
Magnesium deficiency also shows chlorosis in the interveinal areas, but these symptoms start on the older leaves, and the chlorosis has a more yellow-orange colour.
Manganese deficiency also shows chlorosis on younger leaves, but the veins remain green even at severe deficiency.
Tomato - Chlorosis
Symptoms
Plants deficient in Fe show chlorosis of intercostal areas of young leaves, followed by yellowing of whole shoot tips.
At severe deficiency, the leaves may become nearly white, and the veins are chlorotic, too.
Reasons
Iron deficiency
Magnesium deficiency also shows chlorosis in the interveinal areas, but these symptoms start on the older leaves, and the chlorosis has a more yellow-orange colour.
Manganese deficiency also shows chlorosis on younger leaves, but the veins remain green even at severe deficiency.
Iron deficiency made worse by
- High pH
- Water logged soils
- Calcareous soils
- High copper, manganese or zinc soils
Iron is important for
- Chlorophyll formation
- Photosynthesis
- Protein synthesis
- Fruit colour
