You want to make sure that all of your fertiliser is going exactly where it's needed. This is how to do it.
First, keep in mind that the correct setting of your spreading machine is determined by the physical properties of the fertiliser: particle size distribution, bulk density and flow rate all influence the fertiliser spreader calibration settings.
Different kinds of fertiliser – or even the same fertiliser from different production plants – may require different settings. Always check the information on the bag of fertiliser and remember to change the settings every time you switch to a different kind of fertiliser.
You find the correct settings on the spreader manufacturer's tables. These are based on tests under ideal conditions in test stations and give information on how to set the spreader for optimum even spreading at the desired application rate (kg/ha) and at a specific working width.
Set the spreader at the right height above the crop when you are out in the field. This measurement is also found in the spreader manufacturer's tables (links lower down this page).
Next, adjust the angle at which the fertiliser hits the disk, as this determines how far the fertiliser will be thrown.
The last adjustment you must make before you check if the spreader is working properly, is the flow rate controller, as this impacts how much fertiliser is applied per acre. Again, refer to the instructions given by the spreader manufacturer and you will be good to go.
To make sure you’re achieving the best possible spreading result, you can perform a tray test using your particular combination of spreader settings and fertiliser.
The simple tray test will help you fine tune the settings, so you can rest assured that the fertiliser is spread evenly across the entire spreading width. A separate test should be conducted for different fertilisers. You can either do this yourself or hire a fertiliser spreader calibration expert to conduct the tests.
To make sure you can find the right spreader settings for fertilisers, Yara regularly supplies its fertilisers to the various spreader manufacturers. This way they can update the settings for spreader adjustments available on their websites.
Please use the links below to select your spreader manufacturer to visit the fertiliser spreader calibrations setting page on their site.
These short stories will show you why and how choosing the right fertiliser and ensuring the nutrients are spread accurately and evenly pay off. Here is our advice on how to protect your investments as well as the environment:
Improving nitrogen fertiliser efficiency is one way your farm can become more productive, profitable and sustainable. Try our quiz to find out how you can improve your farm's nitrogen fertiliser efficiency.
To spread fertiliser accurately over wide bout widths it is important to use a quality fertiliser. All Yara fertilisers have excellent spreading characteristics but the following fertilisers are some of the most popular and are particularly recommended.
Yara supply our solid and liquid fertilisers and micronutrients through a network of local suppliers Use our interactive map to locate your nearest suppliers.
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.