March 30, 2021 2:49 pm Published by KirstyH
sulphur deficiency

Form – taken up as ionic Sulphate SO4-, Sulphur links with Nitrogen to build protein and promote canopy development.

Function – while Nitrogen is a growth promoter, Sulphur is a growth regulator, effectively balancing the manufacture of sugars and proteins in leaf tissue with the demand from these materials throughout the plant. As such, Sulphur plays a central role in maintaining green leaf area, growth rates and delaying senescence. Low Sulphur status reduces Nitrogen metabolism, leaf expansion and plant development

sulphur deficiency

Symptoms – similar in appearance to Nitrogen stress, low Sulphur status induces a pale yellow chlorosis of the entire plant. Plants produce smaller leaves with lower chlorophyll and slower growth rates. Low Sulphur status can lead to elevated leaf concentrations of free Nitrogen, which can increase insect and disease pressure.

Significance – as mobility within the soil is very high, Sulphur demand is not often met without supplementation. Low Sulphur status will restrict plant response to Nitrogen, influencing growth rates, senescence and disease resistance. Sulphur stress is often worse in cold, wet, compacted soils.

Actions –  check soil status and correct if necessary. Apply Sulphur with Nitrogen fertiliser. Foliar feed Sulphur during times of rapid growth, peak stress or high disease pressure.

Sulphomex bottle

SULPHOMEX is a clear solution containing Sulphur and Nitrogen, soluble in water. Crops will respond immediately to applications, which  are quickly absorbed by the plant.

SULPHOMEX provides Sulphur to crops giving an effect of greening and vigour.

SULPHOMEX has a special formulation that does not precipitate or cake, has a long shelf life and maintains its physical and biological characteristics.

SULPHOMEX provides a high level of nutrition to crops. Nitrogen and Sulphur are major constituents of enzymes and proteins in plants.

For more information on Sulphomex and advice on any of our products please contact us:


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