Colza - Growth retardation
Symptômes
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.
Raisons
Nitrogen deficiency
Colza - Growth retardation
Symptômes
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.
Raisons
Nitrogen deficiency
The purple leaf color is similar to the discoloration caused by P, Mg, B or S deficiency.
Nitrogen deficiency aggravé par
- 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
Azote est important pour
- Improved crop development
- Increased yield
Yara a recommandé cet engrais pour Azote
YaraVita SAFE-N 300
Oilseed Rape: 10 to 20 l/ha at the 4 to 8 leaf stage. Also, 10 to 20 l/ha at the onset of stem extension. Repeat 10 to 14 days later if necessary. Water rate: 200 l/ha.
En savoir plus YaraVita SAFE-N 300
