Sulphur availability is low on acidic soils, light or sandy soils, with low humus content, bad soil aeration.
Symptoms of sulphur deficiency
Sulphur deficiency is shown by grey/yellow marbling on younger leaves, stunted growth, pale yellow flowers, delayed maturity and reduced oil content in oilseeds.
What is sulphur important for?
- Protein synthesis – essential amino acids (cysteine, methionine), coenzyme A,
vitamins (biotin, thiamine, vitamin B)
- N regulation within the plant
- Oil synthesis in oleaginous fruits
- Component in glutens (disulphide bridges)
- Involved in the glutathione redox system
- Involved in the respiration metabolism via many compounds
- Promotes plant tolerance against fungal infections
- Yield and quality
Whereby sulphur deficiency is enhanced?
- Acidic soil
- Light or sandy soil (leaching)
- Low humus content
- Poorly ventilated soil (waterlogging)