Agriculture Reference
In-Depth Information
Higher GHG emissions are within the organic system also with seed (see Figure 3), where the
calculated value is 0.023 CO
2
e/kg of grains for wheat within the ecological system, respectively
0.035 CO
2
e/kg of grains within the conventional one (52.2% more in organic farming) and 0.014
CO
2
e/kg of grain
s for rye within the organic system and 0.026 CO
2
e/kg
of grains in the
conventional system (85.7% more in organic farming). However, of the total amount of
emissions, the seed has relatively negligible share.
Field emissions make an important part of the total emission load (see Figure 4), there is not
evident an explicit trend. While they are for wheat in the organic farming system by 36.5%
higher (0.137 CO
2
e/kg of grains in the conventional and 0.187 CO
2
e/kg of grains in the organic
farming system) however, for rye, there are these values by 33.7% lower in the organic farming
system (0.175 CO
2
e/kg of grains in the conventional and 0.116 CO
2
e/kg of grains in the organic
farming system). Differences in the amount of field emissions are caused by a combination of
several factors, the main role is played by the difference in the intensity of fertilization (for
wheat in the organic farming system, there is applied 20 tons of manure while for rye only 12
tonnes) and by the various ratio of income between conventional and organic farming system
(organic wheat yield is 58% of the conventional wheat yield, yield of organic rye makes up
72.5% of the conventional rye yield).
0.200
0.180
0.160
0.140
0.120
0.100
0.080
field emissions
0.060
0.040
0.020
0.000
conventional
organic
conventional
organic
WHEAT
RYE
Figure 4.
Production of CO
2
e/kg of grain from field emissions during growing of wheat and rye in organic and con‐
ventional system of farming
The main differences in emission production in conventional and organic farming system
arising from the use of agrochemicals in the conventional farming system. While there is a
relatively small share of total emissions caused by the use of pesticides (0.22% of total emissions
