Kverneland Exacta range

PHYSICAL PROPERTIES

Efficient management of crop protection to secure a profitable harvest is a decisive factor. You have to be dedicated towards everyday food production, by taking care of the crop in a precise and sustainable way. Our Kverneland spreading solutions help to work in an easier and more profitable way. At the end of the day spreading is all about precision. SHAPE, GRANULE SIZE DISTRIBUTION AND SPECIFIC WEIGHT

Ballistics The basics of fertiliser spreading are ballistics. A good spreading pattern is dependent on the flow of fertiliser inside the spreader and its behavior during the projection in the air. The flow rate will depend very much on the fertiliser properties and will change with increasing or decreasing the humidity. Different fertilisers have a mix of different granular sizes, which is influencing the spreading pattern and the maximum possible working width. Physical Properties Fertiliser is available in different types and with different nutrient contents - they are produced in different factories all over the world. That means that fertiliser with the same name and the same nutrients can have very different physical properties, for example granular sizes. Although the essential parameters to adjust the spreader correctly are the physical properties and not the name or nutrient content.

Influence of the Granular Size Distribution The granular size distribution and quality (different size of fertiliser) can be measured with the Kverneland granule size box. The result of the granular analysis determines the letter setting of the spreader, which is used to optimise the spreading pattern in the field, in relation to the required working width. Influence of the Weight The weight of the fertiliser is also important to know. Some fertilisers are very light which make them very sensitive to wind influence and maximal spreading width. On the other hand, with very heavy fertilisers there is a risk of crop damage.

Influence of the Shape Each and every granule behaves differently on the vane, depending on its shape and surface. Sharp edges have a longer traveling time on the vanes and round shaped granules roll over the vanes and have less friction. Coatings can reduce friction, but some coatings are sticky and will influence the spread pattern by creating a layer on the vanes, slowing down the acceleration of the granules. The Kverneland spreaders are standard delivered with the granule size box which is the main tool to adjust the Kverneland spreader to ensure the even distribution of the granules on the soil by respecting the required working width!