Fertiliser calculators

A useful collection of calculators to compare the return on investment and margin over fertiliser when using different fertilisers.

Wheat N Response S Barley N ResponseValue of Grass Nitrate vs Urea NS vs Straight N Compound vs Blend Tropicote BenefitCompound v Blend Grassland

Use our calculator below to see why it pays to buy a Yara NPK fertiliser! 

How much cheaper does a blended NPK fertiliser need to be to achieve the same margin as a quality Yara CCF NPK fertiliser on grass?

For this comparison, you will need to know if the NPK blend contains CAN or Urea, as this influences the typical yield loss from a blended fertiliser

To begin please enter the required values

Yara CCF Fertiliser 

Nutrient content (%)

Blended Fertiliser

Nutrient content (%)

Crop Details

If the NPK blend includes Urea then use 5% as the typical yield loss. If the NPK blend includes CAN then use 2% as the typical yield loss


Recent development work carried out by Yara investigated the segregation of nutrients that occurs as the hopper discharges during application. It was found that using inferior quality blended fertiliser led to yield reductions of up to 5% due to poor distribution of nutrients. Read more

Your results

 

Best Option

CCF NPK Fertiliser

Amount of fertiliser applied

833 kg /ha

Amount of nitrogen applied

225 kg N /ha

Amount of phosphorus applied

42 kg P2O5 /ha

Amount of potassium applied

42 kg K2O /ha

Amount of sulphur applied

42 kg SO3 /ha

Cost of fertiliser applied

282 £ /ha

Expected crop yield

10 t/ha

Yield loss

0 t/ha

Actual crop yield

10 t/ha

Grass value

1650 £/ha

Margin over fertiliser ?

1368 £/ha

Best Option

NPK Blended Fertiliser

Amount of fertiliser applied

900 kg /ha

Amount of nitrogen applied

225 kg N /ha

Amount of phosphorus applied

36 kg P2O5 /ha

Amount of potassium applied

36 kg K2O /ha

Amount of sulphur applied

45 kg SO3 /ha

Cost of fertiliser applied

270 £ /ha

Expected crop yield

10 t/ha

Yield loss due to blend

0.2 t/ha

Actual crop yield

9.8 t/ha

Grass value

1617 £/ha

Margin over fertiliser ?

1347 £/ha

To achieve the same margin as the CCF NPK the price of blended fertiliser would need to be

276 £/t
results empty

Please enter the required values

Recommended compound fertilisers

The following YaraMila compound NPKS fertilisers are recommended for all crops and contain nitrogen, phosphate, potassium and sulphur in appropriate ratios.

YaraMila ACTYVA S
15.6-14.6-14.6+ 6.5 SO3 - Granular fertiliser often used for grassland, winter cereals and oilseed rape to supply phosphate and potash together with nitrogen and sulphur.
YaraMila 52 S
20.6-8.2-11.6 +6.5%SO3 - Compound NPKS fertiliser containing Nitrogen, Phosphate, Potash and Sulphur suitable for all crops.
YaraMila EXTRAGRASS
27-5-5 + 6% SO3 - Compound granular fertiliser with sulphur with the ideal ratio for grazed or mown swards to get the grass off to a good start early in the season.

Check out the latest agronomy advice

These articles will help you get even better results from your fertilisers, by keeping you up to date with the latest agronomy advice from the Yara agronomists. If you don't find the advice you are looking for try looking in our full advice archive.

Spreader on a field
Fertiliser quality - don't settle for less
Soil fertility is certainly top of both farmers and policy makers minds currently, with a broad consensus that it plays a key role in the continued economic and environmental sustainability of farms.
Cows in a field
Keeping clover in fine fettle
White clover is being increasingly used on intensively grazed farms where the benefits can be substantial, lowering both the cost of growing grass and the carbon emissions intensity of milk produced. Managing nutrient and fertiliser inputs is a key component in establishing and maintaining clover in these swards successfully.
Canola Fields
Sulphur: Best Practice
It is widely accepted that UK soils are deficient in sulphur so supplementation via organic manures or mineral fertilisers is essential. What I think is less understood is that not all sulphur-containing fertilisers are the same.
Looking for something else ? Check our full advice archive