Oilseed Rape - Growth retardation
Symptoms
Nitrogen deficiency is characterized by reduced vigor, smaller leaves and pale green or yellowish leaf color. Growth is strongly restricted and the stand looks more loose than normal. Reduced flowering.
Reasons
Nitrogen deficiency
Oilseed Rape - Growth retardation
Symptoms
Nitrogen deficiency is characterized by reduced vigor, smaller leaves and pale green or yellowish leaf color. Sometimes a purple discoloration, mainly on mature leaves, may occur.
Older leaves senesce prematurely.
Reasons
Nitrogen deficiency
The purple leaf color is similar to the discoloration caused by P, Mg, B or S deficiency.
Nitrogen deficiency made worse by
- Low or high pH soils
- Sandy or light soils (leaching
- ) Low organic matter
- Drought conditions
- High rainfall (leaching) or heavy irrigation
- Addition or high levels of non-decomposed organic matter/manure (eg straw)
- Fast growing crops
Nitrogen is important for
- Improved crop development
- Increased yield
