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Unheated soil-grown winter vegetables in Austria: Greenhouse gas emissions and socio-economic factors of diffusion potential

Theurl, Michaela C.; Hörtenhuber, Stefan J.; Lindenthal, Thomas and Palme, Wolfgang (2017) Unheated soil-grown winter vegetables in Austria: Greenhouse gas emissions and socio-economic factors of diffusion potential. Journal of Cleaner Production, 151, pp. 134-144.

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Online at: http://www.sciencedirect.com/science/article/pii/S0959652617304511

Summary

The adaption of historic European cultivation techniques for unheated winter vegetable production has gained momentum during the last years in Austria. Studies that evaluate ecological and socio-economic sustainability-factors of these production techniques are scarce. In this study, we analyze the greenhouse gas emissions along vegetable supply chains based on a life cycle approach and investigate factors of the socio-economic system towards future market diffusion of these new-old technologies based on the Sustainability Assessment of Food and Agriculture Systems (SAFA) guidelines of the Food and Agriculture Organization (FAO). Data of the supply-chains of lettuce, spinach, scallions and red radish was collected from field trials in different climatic regions in Austria and compared to existing commercial systems in Austria and Italy. The results show, that unheated winter vegetable production is feasible. Greenhouse gas emissions of unheated vegetables are lower with 0.06e0.12 kg CO2 equivalent versus 0.61e0.64 kg CO2 equivalent per kg fresh product crops from heated systems. Due to small packaging units unheated vegetables show maxima of 0.58 kg CO2 equivalent per kg product. Heated products were outreached by two times when individual shopping trips to the farm were taken into account. Keeping salad frost-free was not found to contribute to a reduction of greenhouse gas emissions compared to conventional systems. The analysis reveals that a diffusion of unheated winter harvest systems depend primarily on 11 interdepending socio-economic factors. An innovative subsidy system and the creation of a positive image of winter harvest from unheated vegetables production together with an increased utilization rate of polytunnel areas and the consultancy for producers and processors are the most influential factors towards a sustainable market diffusion of winter harvest produce.


EPrint Type:Journal paper
Keywords:climate, greenhause gas emissions, Winter harvest, Low-energy system, Seasonality, Greenhouse gas emissions, Vegetable production, Frost-hardy vegetables
Subjects: Food systems > Processing, packaging and transportation
Environmental aspects > Air and water emissions
Crop husbandry > Production systems > Vegetables
Food systems > Produce chain management
Values, standards and certification > Evaluation of inputs
Research affiliation: Austria > FiBL Austria
DOI:https://doi.org/10.1016/j.jclepro.2017.03.016
Deposited By: Theurl, Michaela C.
ID Code:32120
Deposited On:27 Sep 2017 09:00
Last Modified:27 Sep 2017 09:00
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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