Fertiliser calculators

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

Nitrate vs Urea NS vs Straight N Compound vs Blend CN vs CAN Wheat N Response Value of Grass

Nitrogen response on spring barley

The optimum rate of nitrogen for spring barley depends on the response of the crop to nitrogen, the crop value and the cost of nitrogen.  This calculator uses nitrogen response data to calculate the optimum rate of nitrogen at different wheat and nitrogen prices and also calculates the margin over fertiliser cost and return on investment for different applied rates of nitrogen.

Spring barley nitrogen response calculator

To begin please enter the required values

Fertiliser details

Crop Details

Your results

 

Cost of nitrogen per kg

2.50 € /kg N

Best Option

Optimum N Rate

Optimum N Rate

140 kg N/ha

Predicted yield

8.91 t/ha

Extra yield ?

3.75 t/ha

Extra crop value

918 €/ha

Cost of fertiliser applied

351 € /ha

Return on investment

2.6 €/€ spent

Margin over fertiliser ?

567 €/ha

Comparison N Rate

Applied N Rate

125 kg N/ha

Predicted yield

8.72 t/ha

Extra yield ?

3.56 t/ha

Extra crop value

873 €/ha

Cost of fertiliser applied

313 €/ha

Return on investment

2.8 €/€ spent

Margin over fertiliser ?

560 €/ha
results empty

Please enter the required values

The calculations of predicted yield and optimum nitrogen rate are based on actual n-response data derived from 10 years (2011-2021) of n-response trials using ammonium nitrate as the n source, as shown below.

Nitrogen response of spring barley

It is possible to use the calculator for other sources of nitrogen such as CAN or liquid fertiliser but if using urea be aware that the nitrogen use efficiency may be reduced resulting in lower than predicted yields (of around 3-5%) which will affect the results.

Recommended fertilisers

The following YaraBela nitrate-based fertilisers are recommended

YaraBela AXAN
27% N + 9% SO3 - Granular uniform compound nitrate based nitrogen and sulphur fertiliser for use on all crops.
YaraBela CAN
27% N - Granular calcium ammonium nitrate based nitrogen fertiliser for use on any crop.

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.

Spring Barley Fields
How to Maximise Spring Barley Productivity
With so many farmers struggling to get onto their fields to drill winter wheat due to the wet weather, many are turning to spring barley as an alternative crop.
Farm Fields
Tips for a Successful First Cut
That first cut of grass will be your most valuable cut of the year - it’s the most economical to make and usually has the highest quality.
Farmer and Agronomist soil sampling in a field
How to protect soil in wet weather
As farmers our soil is our most valuable asset. If we want future generations of our family to farm our lands we need to make sure that we look after it.
Yara Agronomist and Farmer in a field with a N-Tester
When's the Best Time for the First Nitrogen Application?
As you would expect, the answer to this question has lots of variables, but given that many farmers are having to recover their crops, we would recommend an early nitrogen application, in mid to late February.
Farmer and Agronomist in a field with dairy cows in the background
How do I Maximise Spring Grass?
Grass is at its highest value in Spring, so a lot of research has gone into how we maximise grass growth at this crucial time.
Cows in a field
Spring Grassland Fertiliser Update
How are your plans looking for the grass season ahead? The focus in January should be on planning for spring grazing and 1st cut silage.
A Farmer putting his hands through the soil
How to Recover Waterlogged Root Systems
Many may have hoped for a white Christmas, but all we got was rain.. lots of it. Fields are saturated, bringing plenty of challenges for arable farmers.
Cow Grazing in a field
Get Ready for Spring
Whilst cows are housed in dry barns and we fret over soggy fields, it won’t be long before our thoughts shift to grazing and slurry applications.
Farmer in a field with cows in the background
Grassland Fertiliser Advice for September
With above average grass growth rates across the country, the focus should be on making the most of this grass as we enter September.
Looking for something else ? Check our full advice archive