Apples - Spongy tissue
Symptoms
Low phosphor concentrations in fruits produce "low temperature breakdown", shown by brown and soft areas within flesh in store.
Only at progressed stage damage is visible from the outside. Fruits are squashy and show brown areas on surface.
Causes
Phosphor deficiency
Apples - Spongy tissue
Symptoms
Low phosphor concentrations in fruits produce "low temperature breakdown", shown by brown and soft areas within flesh in store.
At progressed stage damage is visible from the outside. Fruits are brown and squashy.
Causes
Phosphorus deficiency
Phosphorus deficiency made worse by
- Acidic or very alkaline (calcareaus) soils
- Low organic matter
- Cold or wet conditions
- Crops with a poorly developed root system
- Soils with low P reserves
- Soils with a high phosphate capacity
- Iron rich soils
Phosphorus is important for
- Increases fruit size
- Gives better colour
- Increases firmness
- Reduces storage disorders
- Increase fruit calcium levels
