MAINCROP S (14-13-21 + 5.6% SO3) is a quality size-matched NPK plus sulphur blended fertiliser which is ideal for use for potato production due to the ratio in the of N, P and K whilst including useful amounts of sulphur to aid growth processes.

Only available in Scotland, Northern Ireland and the Republic of Ireland

Product and safety information

Product application advice


Fertilizer Spreading Advice: When spreading fertilizers containing sulphur it is recommended to regularly clean the spreader vanes using a rag with a 'WD40' type lubricant to avoid a build-up of deposits.

Where can I buy Yara fertilisers ?

Where can I buy Yara fertilisers ?

Yara supply our solid and liquid fertilisers and micronutrients through a network of local suppliers  Use our interactive map to locate your nearest suppliers.

Find a local supplier