Nutrients

N Nitrogen
P Phosphorus
Mg Magnesium
S Sulphur
B Boron
Cu Copper
Mn Manganese
Zn Zinc

Sugar Beet - Discolouration

Symptoms
Phosphorus deficiency inhibits growth of the sugar beet plants, and the plants have a stiff appearance. The colour of the leaves ranges from dark green to dull blue-green. Furthermore, anthocyan may be visible, giving the leaf veins and margins a red/violet colour.

Causes
Phosphorus deficiency. Excess N fertilisation also causes dark green leaves, but the plants do not remain smaller then, and they do not have a stiff appearance as they have at P 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

  • Better crop establishment
  • Improved early root development
  • Improved yield
  • Even crop maturation

Yara recommended fertilisers for Phosphorus deficiency

YaraVita MAGPHOS K

YaraVita MAGPHOS K

Sugar Beet: 5 l/ha at 4-6 leaf stage. Repeat applications may be made at 10-14 day intervals. Water rate: 200 l/ha.

Read more about YaraVita MAGPHOS K

Other recommended products

YaraVita CROPLIFT PRO
Sugar Beet: 2.5 to 5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Water rate: 200 l/ha.
YaraVita SENIPHOS
Sugar Beet: 5 l/ha at 4-6 leaf stage. For moderate to severe deficiency, repeat applications should be made at the above rate at 10-14 day intervals. Water rate: 200 l/ha.