It should be noted that figures above are approximate
only and that actual dimensions of bales can vary considerably
from the expected, due to variations in dry-matter content of
the grass being baled and the pressure that balers can exert.

A more accurate figure can be obtained by measuring the actual circumference
of 20 bales which are representative of the bales in the field and
obtaining the average diameter.

Note that a 6" increase in diameter on a bale increases the
circumference of the bale by 0.479m, nearly half a metre! This
will reduce the number of bales covered per roll by as much as
25 (assuming a 4ft bale with 2 layers applied). A similar exercise
needs to be performed with the length of net being applied. Whilst
it may be considered that exactly 2 layers of net are being applied,
one extra metre of net applied to each bale would reduce the number
of bales per roll by as many as 39 bales.

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