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Enhancing Yields in Organic Crop Production by Eco-Functional Intensification

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  • Jensen, Erik Steen
  • Bedoussac, Laurent
  • Carlsson, Georg
  • Journet, Etienne-Pascal
  • Justes, Eric
  • Hauggaard-Nielsen, Henrik

Abstract

Organic agriculture faces challenges to enhance food production per unit area and simultaneously reduce the environmental and climate impacts, e.g. nitrate leaching per unit area and greenhouse gas (GHG) emissions per unit mass produced. Eco-functional intensification is suggested as a means to reach these objectives. Eco-functional intensification involves activating more knowledge and refocusing the importance of ecosystem services in agriculture. Organic farmers manage agrobiodiversity by crop rotation (diversification in time). However, sole cropping (SC) of genetically identical plants in organic agriculture may limit resource use efficiency and yield per unit area. Intercropping (IC) of annual grain species, cultivar mixes, perennial grains, or forage species and forestry and annual crops (agroforestry) are examples of spatial crop diversification. Intercropping is based on eco-functional intensification and may enhance production by complementarity in resource use in time and space. Intercropping is based on the ecological principles of competition, facilitation and complementarity, which often increases the efficiency in acquisition and use of resources such as light, water and nutrients compared to sole crops, especially in low-input systems. Here we show that IC of cereals and grain legumes in European arable organic farming systems is an efficient tool for enhancing total grain yields compared to their respective sole crops. Simultaneously, we display how intercropping of cereals and legumes can be used as an efficient tool for weed management and to enhance product quality (i.e. cereal grain protein concentration). We discuss how intercropping contributes to efficient use of soil N sources and minimizes losses of N by nitrate leaching via Ecological Precision Farming. It is concluded that intercropping has a strong potential to increase yield and hereby reduce global climate impacts such as GHG kg-1 grain. Finally, we discuss likely barriers and lock-in effects for increased use of intercropping in organic farming and suggest a roadmap for innovation and implementation of IC strategies in organic agriculture.

Suggested Citation

  • Jensen, Erik Steen & Bedoussac, Laurent & Carlsson, Georg & Journet, Etienne-Pascal & Justes, Eric & Hauggaard-Nielsen, Henrik, 2015. "Enhancing Yields in Organic Crop Production by Eco-Functional Intensification," Sustainable Agriculture Research, Canadian Center of Science and Education, vol. 4(3 Special).
    • Handle: RePEc:ags:ccsesa:230379
    DOI: 10.22004/ag.econ.230379
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    References listed on IDEAS

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    1. Verena Seufert & Navin Ramankutty & Jonathan A. Foley, 2012. "Comparing the yields of organic and conventional agriculture," Nature, Nature, vol. 485(7397), pages 229-232, May.
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    1. Sebastian Munz & David Reiser, 2020. "Approach for Image-Based Semantic Segmentation of Canopy Cover in Pea–Oat Intercropping," Agriculture, MDPI, vol. 10(8), pages 1-12, August.
    2. Mohamed Lazali & Simon Boudsocq & Elisa Taschen & Mohamed Farissi & Wissem Hamdi & Parthenopi Ralli & Hervé Sentenac, 2021. "CROSYMED Project: Enhancing Nutrient Use Efficiency through Legumes in Agroecosystems of the Mediterranean Basin," Sustainability, MDPI, vol. 13(9), pages 1-10, April.
    3. Sari J Himanen & Hanna Mäkinen & Karoliina Rimhanen & Riitta Savikko, 2016. "Engaging Farmers in Climate Change Adaptation Planning: Assessing Intercropping as a Means to Support Farm Adaptive Capacity," Agriculture, MDPI, vol. 6(3), pages 1-13, July.
    4. Röös, Elin & Patel, Mikaela & Spångberg, Johanna & Carlsson, Georg & Rydhmer, Lotta, 2016. "Limiting livestock production to pasture and by-products in a search for sustainable diets," Food Policy, Elsevier, vol. 58(C), pages 1-13.
    5. Reed John Cowden & Ambreen Naz Shah & Lisa Mølgaard Lehmann & Lars Pødenphant Kiær & Christian Bugge Henriksen & Bhim Bahadur Ghaley, 2020. "Nitrogen Fertilizer Effects on Pea–Barley Intercrop Productivity Compared to Sole Crops in Denmark," Sustainability, MDPI, vol. 12(22), pages 1-17, November.
    6. Aare, Ane Kirstine & Lund, Søren & Hauggaard-Nielsen, Henrik, 2021. "Exploring transitions towards sustainable farming practices through participatory research – The case of Danish farmers' use of species mixtures," Agricultural Systems, Elsevier, vol. 189(C).
    7. Fan, Fan & Henriksen, Christian Bugge & Porter, John, 2016. "Valuation of ecosystem services in organic cereal crop production systems with different management practices in relation to organic matter input," Ecosystem Services, Elsevier, vol. 22(PA), pages 117-127.
    8. Yin, Wen & Chai, Qiang & Zhao, Cai & Yu, Aizhong & Fan, Zhilong & Hu, Falong & Fan, Hong & Guo, Yao & Coulter, Jeffrey A., 2020. "Water utilization in intercropping: A review," Agricultural Water Management, Elsevier, vol. 241(C).

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