Agroforestry för svenska förhållanden 2024 - Flipbook - Page 62
The gross margin system
The gross margin system has the advantage that it
does not allocate fixed costs between individual
activities. This system makes it easier to implement
changes on the farm, such as the establishment of
agroforestry. One can relatively easily evaluate the
economic impact of planting trees within a field by
Bröd från eget utsäde av vete med stor genetisk
mångfald. Wakelyns bageri. / Bread from own seed of
wheat with high genetic diversity, Wakelyns bakery.
Table 1A WINTER WHEAT FOR FODDER
Sample silvoarable gross magin - wheat and apple,
in UK.
Production level
Average
Per ha
Yield: tonne/hectare
8.30
£
£/tonne
1,245
150
Seed
60
7
Fertiliser
188
23
Sprays
251
30
Total variable costs
499
60
Bruttomarginal SEK/hektar
746
90
Output at £150/ton
Variable costs £/ha
Agroforestry gross margin system © Ian Knight /
Agroforestry Services - abacusagri.com
Sid 61-62
replacing one gross margin (e.g. an annual crop/
animal products) with another gross margin for the
trees.
The chart is by Ian Knight and taken from ‘The Agroforestry Handbook UK’, with permission from the
source. Agroforestry gross margin system © Ian
Knight. Agroforestry Services - abacusagri.com.
An easy way to calculate the annual yield and income
from your trees is to calculate how many years after
establishment you expect to get the maximum yield
from your trees. Then you can write the expected
yield before and after the trees reach their maximum
yield as a percentage of the maximum yield. See an
example of table 1a and 1b for a system with winter
wheat and apple crop. The example shows a calculation of the gross margin for a farm with apples in
alleys and winter wheat between the rows when the
apple trees are six years old and have reached full
productivity. The costs are calculated per hectare.
This system is suitable for a sparse tree spacing of
around 85 apple trees per hectare and a row width
of 24-36 metres, depending on machine size, and
tree spacing of three metres in the row. The table
originally comes from “The Agroforestry Handbook
UK” [1] and was made in 2019 by Stephen Briggs
and taken with permission from the source. In the
table, the prices have been converted from pounds
to crowns at the currency exchange rate for 17 January
2024. It should be noted, however, that the prices
have changed over time and the example is not to
show the exact figures for each cost and revenue, but
to give an idea of how to calculate and compare an
agroforestry-based operation against a more traditional farming system.
In Sweden, there are two organisations that fund
agroforestry projects:
Gårdskapital
Svensk kolinlagring
You can also apply for the following support, provided
you can link your agroforestry project to the aims and
objectives of these grants:
Leader
Länsstyrelsen
Vinnova
Jordbruksverket
