An inorganic liquid formulation containing nitrogen and sulphur. Sulphomex is suitable for foliar application and is formulated for rapid plant uptake.

Most agricultural and horticultural field crops including cereals, oilseed rape, grassland, sugar beet, brassicas and potatoes.

To correct nutrient deficiency.

Pack Sizes
20, 1000 litres

Analysis w/w w/v
Nitrogen 11.3% 15.0%
Sulphur (SO3) 65.0% 87.5%


Function of Sulphur
Sulphur is a key element for plant growth and development being a key constituent of enzymes and amino acids involved in photosynthesis and protein formation. The amino acids cysteine and methionine, which contain sulphur, are particularly important in the bread making process.

Sulphur is also a key constituent in oilseed crops. Sulphomex is a true foliar nutrient supplying sulphur through the leaf at times of maximum requirement. Sulphur can only be taken into the plant as SO2 or SO4 and Sulphomex is an ideal formulation ensuring maximum uptake of nutrient.

Sulphur Deficiency
Sulphur has been traditionally supplied by atmospheric deposition, animal slurries and an impurity of mineral fertilisers. The implementation of the Clean Air Act, the move to arable farming and changes in fertiliser usage have resulted in lower applications of sulphur to many crops throughout the UK.

Sulphur deficiencies have been observed in a number of crops, notably oilseed rape, 2nd and 3rd cut silage, and vegetable brassicas.  The benefits of sulphur application have been seen on the crops above and on cereals and sugar beet. The mobility of sulphur in plants is poor, thus yellowing is seen on the newest growth rather than on older leaves. This distinguishes sulphur deficiency from nitrogen deficiency.

Yield benefits of sulphur application have been seen even when sulphur deficiencies have not been seen in the crop.


Use Sulphomex to correct sulphur deficiency, or as part of a programme to prevent sulphur deficiency.

Apply 5-10l/ha, in a minimum of 200 l/ha water.

The spray tank should be filled with half the required
water. After shaking the container, measure the required amount of Sulphomex and add to the tank whilst maintaining constant agitation. Add remaining water to correct dilution and spray.


Do not apply in tank mix with pesticides when crop is showing deficiency symptoms, is under stress, or in adverse weather conditions.



For more information on timing and application rates, please refer to the Sulphomex Technical Information for Horticulture PDF


Turf and Amenity

Sulphur is an important nutrient for turf and is needed in sufficient quantities to ensure nitrogen is used efficiently and turf colour is maintained.

The number of fertiliser products containing sulphur has declined in recent years so regular doses of sulphur are not being applied and the rootzone of most greens is not able to retain or supply sulphur. As a result, if sulphur is not applied regularly, nitrogen is not used efficiently creating two issues; poor turf growth and an increased risk of disease.

The mobility of sulphur in plants is also poor, so yellowing tends to occur in the newer leaves. Foliar application of Sulphomex is most effective in correcting deficiency symptoms rapidly as it rapidly enters the sward and rapidly reaches all parts of the leaf.

Sulphomex contains a high level of sulphur, formulated in two forms for instant delivery and for slower release maintenance of sulphur levels. It also contains nitrogen to ensure that the sulphur is used efficiently in the sward to produce strong, healthy growth. It will mix with most of the Omex Amenity foliar range, allowing targeted doses of sulphur to be made with most applications. 

When to use How much to use Comments
Throughout the year 0.5 litres/green, 10 litres/ha Repeat every 2-3 months


HORTICULTURE - foliar products for horticulture

AMENITY - foliar products for turf and amenity





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