Crop sequence effects on energy efficiency and land demand in a long-term fertilisation trial

Gerhard Moitzi, Reinhard W. Neugschwandtner, Hans-Peter Kaul and Helmut Wagentristl
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Gerhard Moitzi: Experimental Farm Groß-Enzersdorf, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Groß-Enzersdorf, Austria
Reinhard W. Neugschwandtner: Institute of Agronomy, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Tulln an der Donau, Austria
Hans-Peter Kaul: Institute of Agronomy, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Tulln an der Donau, Austria
Helmut Wagentristl: Experimental Farm Groß-Enzersdorf, Department of Crop Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU), Groß-Enzersdorf, Austria

Plant, Soil and Environment, 2021, vol. 67, issue 12, 739-746

Abstract: The effect of crop sequences (CR - continuous winter rye; CropR - three-field crop rotation of winter rye-spring barley-bare fallow) and fertilisation systems (unfertilised control, mineral fertiliser (NPK), farmyard manure (FYM)) on crop yield, energy efficiency indicators and land demand were analysed in a long-term experiment under Pannonian climate conditions. Due to lower fuel consumption in the bare fallow, the total fuel consumption for CropR was 27% lower than in CR. It was for NPK and FYM fertilisation by 29% and 42% higher than in the control. Although the energy output was lower in CropR than CR, the energy use efficiency for grain production increased by 35% and for above-ground biomass production by 20%. Overall crop sequences, the NPK treatment had higher crop yields, energy outputs and net-energy output with a lower energy use efficiency than the unfertilised control. CropR increased the land demand just by 20% in comparison to CR, although one-third of the land was not used for crop production. The land demand could be decreased with fertilisation by 50% (NPK) or 48% (FYM). A bare fallow year in the crop rotation decreased the crop yield, energy input and increased the energy use efficiency and land demand.

Keywords: cropping systems; energy analysis; land use efficiency; mineral fertilisation; Pannonian basin (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:67:y:2021:i:12:id:440-2021-pse

DOI: 10.17221/440/2021-PSE

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