Oilseed Rape - Discolouration
Symptoms
Dark green, older leaves show a reddish/purple discoloration.
Reasons
Phosphorus deficiency
Oilseed Rape - Discolouration
Symptoms
The older leaves show a distinct reddish/purple discoloration along the marginal area. The entire leaf blade shos a faint reddish tint.
Reasons
Phosphorus deficiency
Oilseed Rape - Discolouration
Symptoms
Older leaves show a distinct reddish/purple discoloration along the marginal area. The entire leaf blade including the veins shows a reddish tint.
Reasons
Phosphorus deficiency
Oilseed Rape - Discolouration
Symptoms
Older leaves show a distinct reddish/purple discoloration along the marginal area. The entire leaf blades including the veins show a reddish tint, as well as the leaf stalks.
Reasons
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
- Improved crop establishment
- Improved winter hardiness
- Improved yield
