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Table 3

Inputs used for sunflower cultivation in France, nitrous oxide and GHG emissions.

Inputs and nitrous oxide emissions GHG emissions (kg eq. CO2 ha−1)
Mineral N fertilizers 38 kg N ha−1 200.6
Mineral P fertilizers 29 kg P2O5 ha−1 16.6
Mineral K fertilizers 22 kg K2O ha−1 11.6
Pesticides 3 kg ha−1 23.1
Seeds 4 kg ha−1 8.1
Fuel 67 l ha−1 206.0
Seed drying 354 MJ ha−1 9.3
Nitrous oxide 0.91 kg N-N2O ha−1 422.2
Total   897.6

GHG emissions were calculated from mean input applications in France (BIO IS, 2010), the emission factors for the production and transportation of inputs used in France and from the tier 1 method of IPCC to estimate nitrous oxide emissions (from De Klein et al., 2006).

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