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Activities before spreading
103
Determining similar
weight
The density is the weight (kg) of 1 litre of fertiliser and it is expressed
as kg/litre or ton/m3.
The following material is required to determine the density:
•
a measuring cup of minimum 1 litre with correct scale division,
•
a scale that can accurately indicate a difference of 10 grams or
less.
TIP
Use 10 litres if you are using a less sensitive scale.
Working method to determine similar weight:

Weigh the dry, empty measuring beaker.

Fill the measuring beaker up to the 1 litre mark.

Knock the measuring beaker 5 times on firm ground.

Fill the measuring beaker up to the 1 litre mark.

Weigh the measuring beaker with the fertiliser.

Subtract the weight of the empty measuring beaker from the weight
of the full one.

Repeat the steps above three times in order to determine the
average weight.
Density of at least 1 kg/l is desirable for good fertiliser distribution.
Lighter types of fertiliser would be more difficult to spread and the
maximum working width would be limited.
Finding the correct
spreading chart
Take a look in the table of contents of your spreading chart book or
have a look on the website for the spreading chart of the fertiliser with
the most comparable characteristics and desired working width,
based on the information you have gathered.

see section »Online spreading chart service« on the following
page.
You can find the settings for the spreader, based on the application
rate and the driving speed.

See section »Spreader setting« on page 105 for further details.
T
IP
the page indicated in the table of contents of the spreading chart book
indicates the settings for the smallest desirable working width. The
spreading charts for larger working widths are on the pages that follow
those.