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  • Soil Nitrogen Supply Calculator

Soil nitrogen supply calculator

If you need information on soil nitrogen supply and help with nitrogen fertiliser decisions making, this is the tool for you!

Click here to download the Quick N and Soil N supply calculator

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Related Resources

24 May 2025

2G and 3G decommission - what you need to know

With Spark and One NZ decommissioning their 2G and 3G networks across the country near the end of 2025. FAR has contacted the companies involved with the moisture probe trial to find out how it could affect your farm.

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24 May 2025

Autumn round up booklet 2025

Read the booklet for the 2025 autumn round up series here. 

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24 May 2025

Measuring losses at harvest

Following the 2024 combine workshops the team have been travelling around the South Island meeting with growers and helping them reduce their losses and improve combine efficiency. Find out more about how you can measure your harvest losses here. 

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24 May 2025

Moisture monitoring considerations

FAR's technology manager Chris Smith gives you some tips and tricks to help you pick the best moisture sensor for your system.

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24 May 2025

FAR Technical Report Issue 1: Moisture Monitoring Project 2023/24

In 2023, FAR set up a Moisture Monitoring project at its Kowhai Research Site in Lincoln to provide independent insights into the range of moisture monitoring systems available in New Zealand. This report covers findings from the first year of the trial and outlines key considerations when choosing a moisture monitoring system.

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24 May 2025

Oilseed O1: Oil seed rape management

Pure Oil NZ and FAR are collaborating to monitor oilseed rape (OSR) paddocks to identify strategies to improve yields. Their work has identified that many growers could reduce the amount of nitrogen applied to OSR crops without impacting on yield or profit.

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24 May 2025

Arable Extra 139 Nitrogen management, economic optima and indicators for arable crops 2024-2025

This Arable Extra discusses optimal nitrogen rates for crops based on 2024-25 fertiliser and crop prices.

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24 May 2025

Spring field events booklet

Read the booklet from our September 2024 spring field events here. 

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24 May 2025

Moisture probe trial at Kowhai Farm

As of 14 Feb 2025 this trial is now over for the 2024-2025 season. But it will be back later in the year, keep an eye out for updates.

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24 May 2025

Calculating costs of production

Calculating actual costs of production for arable crops is as easy as adding your crop specific numbers into a spreadsheet, and letting it do the work.

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