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
- Essential for energy transfer within the plant, therefore direct effect on yield and quality
- Boosts yield and bulb size
- Helps ensuring top yields through use of high rates of N with little quality deterioration
Yara recommended fertilizers for Phosphorus
YaraVita MAGPHOS K
Onion: 5 l/ha. Apply when the foliage is 15cm tall, with a second application 10 to14 days later if necessary. Also,1 to 2 applications of 5 l/ha during bulb filling, with a 10 to 14 day interval between sprays. Water rate: 30 to 200 l/ha.
Read more about YaraVita MAGPHOS K
