Farmer in a field reviewing the crops Farmer in a field reviewing the crops

Spreading nitrogen and sulphur at the same time means more grass

Applying fertilisers containing nitrogen and sulphur means the grass uses nitrogen more effectively, you get more kgs of dry matter per kg of nitrogen that you apply

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Molybdenum – a key micronutrient for clover performance

27 Aug 2025

Molybdenum (Mo) is an essential micronutrient particularly for clovers as it plays a key role in N-fixation. Mo is an important micronutrient for nitrogen (N) metabolism in plants. It helps create proteins in plant leaf cells and is required for N fixation in legumes. Mo availability from the soil declines when the pH is below 6. Therefore, adding lime can increase the availability of Mo to plants. It’s important to be aware that high levels of herbage Mo can cause a Mo-copper imbalance in grazing animals.

Clover and other legumes have a high requirement for Mo during establishment and nodulation because it aids nitrogen transformations in the plant affecting both N fixation and assimilation. Often the only sign of Mo deficiency is poor clover growth. The clover may appear N deficient being stunted with pale green or yellow leaves because N fixation has been affected. Routine clover foliage sampling (leaves only) in spring can check that the clover nutrition is adequate.

It is likely that there are parts of the UK where clover performance is being impacted by Mo deficiency. Where white clover is not performing up to expectations, then it might be worthwhile taking a clover foliage sample. In New Zealand, if white clover foliar Mo is <0.1 mg/kg and N is <4.5% then there is a high probability clover will respond to Mo application. Where clover is found to be Mo deficient, we recommend a foliar application of YaraVita Croplift Pro at 5 kg/ha.

Grassland agronomy advice

The latest grassland fertiliser and nutrition advice from the Yara agronomists.

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See all Grassland and Forage Advice

Grassland fertiliser selector

If you are not sure which grassland fertiliser to choose try using this selector to help you in the right direction.

Are you looking for a fertiliser for Grazing or Silage ?
Just nitrogen plus sulphur (NS) or nitrogen, phosphate, potassium and sulphur (NPKS)?
With or without Selenium for animal health?
With or without Phosphorus?
For application in Spring or Summer?

Based on the information you have given the best choice of fertiliser would be YaraBela Axan.

YaraBela AXAN (27% N + 3.6% S) is a uniform compound granular nitrate based nitrogen and sulphur fertiliser with an N:S ratio of 7.5:1 suitable for use on grassland where nitrogen and sulphur are required but no phosphate or potassium, and where no selenium is required.

YaraBela Axan

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Based on the information you have given the best choice of fertiliser would be YaraBela Nutri-Booster.

YaraBela NUTRI BOOSTER (25% N + 2% S, Na and Se) contains nitrogen and sulphur coupled with selenium.suitable for use on grassland where nitrogen and sulphur are required but no phosphate or potassium, together with selenium for increased animal health.

YaraBela Nutri-Booster

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Based on the information you have given the best choice of fertiliser would be YaraMila Super Booster

YaraMila SUPER BOOSTER (25-2.2-4.2 + 2% S and Se) is a compound prilled NPKS fertiliser containing sodium selenate for use on grassland to supplement selenium levels where nitrogen, phosphate, potassium and sulphur are all required together with selenium to improve livestock health.

YaraMila Super Booster

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Based on the information you have given the best choice of fertiliser would be YaraMila Sulphur Cut

YaraMila SULPHUR CUT (22-1.7-11.6 + 3%S) is a compound NPKS grassland fertiliser ideal for replacing the large amount of potash removed after silage whilst kick starting the regeneration of the grass plants with nitrogen together with sulphur and phosphate, when selenium is not needed.

YaraMila SULPHUR CUT

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Based on the information you have given the best choice of fertiliser would be YaraMila Extragrass

YaraMila EXTRAGRASS (27-2.2-4.2 + 2.4% S) is a compound granular NPKS fertiliser ideally suited to little and often application for Spring/Summer application to grassland for index maintenance and high recovery growth rates. With Nitrogen, Phosphate, Potash and Sulphur in every granule this product give the maximum return in investment by supplying the crop with all the nutrients it requires.

YaraMila Extragrass

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Based on the information you have given the best choice of fertiliser would be YaraMila New 18's + S.

YaraMila NEW 18’s + S (18-6-11 + 3%S) is a compound NPKS fertiliser recommended for early Spring grazing application or paddocks with lower P&K indexes. By frontloading grazing ground with high P & K levels this will improve soil fertility and ensure that you maximise grass growth over the entire season. 

YaraMila New 18's + S

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Based on the information you have given the best choice of fertiliser would be YaraMila Zero P Sward.

YaraMila ZERO P SWARD (26-0-5 + 4% S) is an NK plus S fertiliser used where no phosphate is required and where some potash is required in the grazing system.

YaraMila Zero P Sward

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Based on the information you have given the best choice of fertiliser would be YaraMila Zero P Cut.

YaraMila ZERO P CUT (24-0-10 + 2% S) is a compound fertiliser supplying nitrogen potash and sulphur, often used after first cut silage where no phosphate is required.

YaraMila Zero P Cut

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