Fertilizer Spreading

For the best utilization of fertilizers, the nutrients have to be spread evenly and in the right amount of the desired spread width. We always do our best to provide you with a high quality product, but ultimately the outcome is influenced by the distribution on the field, and it is only by applying the fertilizer with accuracy and attention one can secure the best possible yield.

Fertilizer SpreadingSpreading tables from the manufacturers of spreading machines are based on tests under ideal conditions in test stations. They 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. The settings vary between machines and types of fertilizers.

If spreading tables are not available, it is recommended to use field trial equipment to give an estimation of the spreading, although this method is less accurate.

On small areas, centrifugal spreaders are commonly used at 12 m working width, while both centrifugal and pneumatic spreaders are commonly used for larger working widths, 24-36 m.

The Fertilizer Spreader

Poor application of fertilizer leads to poor crop performance and waste. This can be avoided by following the guidelines below before every application:

  • Check the spreader for general ‘wear and tear’, replacing parts where appropriate and follow the manufacturer’s maintenance advice.
  • Use the suggested spreader settings for each individual fertilizer product and tray test this setting prior to application. Make adjustments to give a low Coefficient of Variation.
  • Regularly recheck the settings to ensure consistency of application.
  • Where equipment for calibration is unavailable, use an appropriate spreader calibration service business.
  • Record and file all maintenance and calibrations with fertilizer field records.
  • Clean the spreader regularly, both during and after use. Rinse with water after each daily driving.
  • Cover the container and the output of the spreader if filled with fertilizer during small stops.
  • Provide the spreader with a grid over the container, mesh width about 10 mm. It reduces the stop risk during discharge.
  • Keep the spreader in good condition according to the instruction manual.
Product Spreading
Fertilizer Spreader

Setting the Fertilizer Spreader

The correct setting of a spreading machine is determined by the physical properties of the fertilizer. Particle size distribution, bulk density and flow rate particularly influence the setting.

  • Read the instruction manual! Pay extra attention to the recommendations for setting and calibration.
  • Set the centrifugal spreader according to the spread table. NOTE! Sometimes a fertilizer product is manufactured in more than one factory.
  • The product will then have different spreading characteristics as shown by spreading tables. Always read carefully the directions on the bag.
  • Check the amount measured before each fertilization.
  • Test the spray pattern using a spreading distribution kit before beginning.

Spreading the fertilizer

  • Keep the correct driving distance in the field. If you don’t have fixed running tracks, mark them with foam, color, sticks or otherwise. Eye sight is not reliable.
  • Use the edge spreading equipment and keep a safe distance.
  • Do not apply fertilizer during strong wind. The centrifugal spreaders are usually more sensitive than ramp injectors. Crosswind moves the whole distribution pattern sideways.
  • Be observant if the humidity levels are high. Some fertilizers absorbs more moisture than others.
  • Maintain a consistent speed. A differences in speed of 10-20% make a clear impact on the application.
  • Do not drive too fast. The faster you drive, the greater the impact of uneven ground.
  • Higher speed may cause strain on the plates and higher amounts of fertilizer are ejected. This can lead to uneven distribution.
  • Check the spreader results continuously. Among other things, the height of the hydraulically injectors might need adjusting.
  • On a ramp spreader, the rolls of output can be worn.
  • Folds and holes on the hoses can cause uneven distribution. Read more in the user manual!

YaraVita Fertilizer Spreading

YaraVita foliar spray products are widely tankmixable with other agrochemical inputs to make treatment easier and more convenient. At www.tankmix.com and in the Yara TankmixIT app you will find the results of more than 30.000 tank mix tests. The service is updated daily and is searchable by product or by active ingredient. Read about the YaraTankmixIT app here.

Spreader manufacturers:


Amazone is one of the biggest European fertilizer spreader manufacturers. Their main goal is to provide the farmer with hightech machinery for best operational results.


BOGBALLE is one of the world’s leading manufacturers of fertilizer spreaders. They work on developing techniques for spreading of mineral fertilizers.

Evans and Pearce

Evans and Pearce Ltd are at the forefront of grain ventilation and processing.


Kongskilde develop methods and equipment for soil cultivation and plant care.


Kubota has become an international brand leader with a focus on contributing to society by offering environmentally compatible equipment.

Farmec Sulky

Sulky is the market leader in the production of fertilizer spreaders and seed drills in France and is one of the top three producers in Europe.


KUHN fertilizer spreaders offer long machine life and high spreading power, and can help to reduce farm input costs as well as improve overall productivity.


Teagle manufacture the market leading ‘Tomahawk’ range, which forms the cornerstone of a comprehensive range of machinery they offer growers worldwide.


Kverneland contributes to more efficient operations with respect to both costs and yield.