Double-cropping (sequential cropping)
5
Technology Description
Double-cropping is the practice of planting a second crop (cover crop) during the idle season of the first (main) crop. If the main crop is a food crop and the cover crop is an energy crop, it reduces competition between food and energy, and can potentially increase the amount of sustainable biomass that can be produced for energy. Having a cover crop also prevents soil erosion. However, more fertiliser is required to provide nutrients for the second crop.
Relevance for Net Zero
While there are alternatives to biofuels (e.g. synfuels using direct air capture [DAC] CO2 and low-emission hydrogen), they are currently more expensive than biofuels. Double-cropping could increase the amount of sustainable biomass available for biofuels.
Key Countries
Finland, Uruguay
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