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How to ensure optimal spread width

Spread width influences both production capacity and costs. Granule strength and bulk density must be kept in mind when choosing the right type of mineral fertilisers and correct spreader settings. Below we describe how to spread Acron granules evenly and share EU test results.

 

Optimal mineral fertiliser distribution

Granules with high strength and bulk density achieve the best distribution results.

Granule quality parameters for uniform distribution up to 36 metres:

•          Bulk density from 0.9 to 1 kg per litre

•          Granule strength from 1.5 N m to 4 N m

 

Acron carried out tests to assess product quality parameters.

Quality parameters for Acron products


Fertiliser

Granule bulk density, kg per l

Granule strength, MPa

NPK 16-16-16

1.02

3 N m

NPK 22-15-0-7

1.03

3 N m

NPK 19-9-19

1.01

3 N m

NPK 15-15-15 (SOP)

0.95

3 N m


 

Uniformity of NPK 16-16-16 distribution at 36 metres compared to the standard

 


 

Acron NPK achieved an excellent coefficient of variation (CV) of 4.3%. The difference between the standard and Acron's product is within the statistical margin of error.

 

Summarised results of European ballistic tests on maximum distribution width of mineral fertilisers

 


Fertiliser

Distribution width, m *

Variation ratio

Value, %

Grade

NPK 16-16-16

42

4.3

Excellent

NPK 22-15-0-7

36

3.4

Excellent

NPK 19-9-19

40

4.9

Excellent

NPK 15-15-15 (SOP)

36

4.5

Excellent

NPK 20-20-0

42

<5

Excellent

NPK 20-10-10

36

3.2

Excellent

NPK 18-6-18+5SO₃+2MgO

48

<5

Excellent

AN (yellow)

30

<5

Excellent


 

* Uniform distribution width depends on:

For example, AMAZONE’s ZA-X spreader has a maximum distribution width of 18 metres, the ZA-V model distributes product up to 36 metres, and the ZA-TS distributes product up to 54 metres. The same fertiliser grade can be spread over different widths, depending on the spreader.

 

Agricultural machinery by spread width, 2019–2020

 


 

Seventy-one per cent of spreaders have a maximum spread width of 24 metres. All Acron products meet spreader requirements. Better fertiliser application can be achieved using correct unit settings.

 

Completed trials

Ø 2020, Germany, Amazone laboratory (test results and equipment settings)

Ø 2019, Russia, Eurotechnika plant laboratory (test results and equipment settings)

Ø 2019, France, Amazone laboratory (test results and equipment settings)

Ø 2018, Germany, RAUCH laboratory

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