Norwegian Centre for Organic Agriculture, 6630 Tingvoll, Norway
Randi Berland Frøseth
Department of Grain and Forage Seed Agronomy, Norwegian Institute of Bioeconomy (NIBIO), 1431 Ås, Norway
Maria Stenberg
Department of Soil and Environment, Swedish University of Agricultural
Sciences (SLU), Skara, Sweden
Jarosław Stalenga
Department of Systems and Economics of Crop Production, Institute of Soil Science and Plant Cultivation – State Research Institute, 24-100 Puławy, Poland
Jørgen E. Olesen
Department of Agroecology, Aarhus University, 8830 Tjele, Denmark
Maike Krauss
Department of Soil Sciences, Research Institute of Organic Agriculture
(FiBL), 5070 Frick, Switzerland
Paweł Radzikowski
Department of Systems and Economics of Crop Production, Institute of Soil Science and Plant Cultivation – State Research Institute, 24-100 Puławy, Poland
Jordi Doltra
Cantabrian Agricultural Research and Training Centre, CIFA, 39600
Muriedas, Cantabria, Spain
Shahid Nadeem
Faculty of Environmental Sciences and Natural Resource Management
(MINA), Norwegian University of Life Sciences (NMBU), 1430 Ås, Norway
Torfinn Torp
Department of Research, Norwegian Institute of Bioeconomy (NIBIO),
1431 Ås, Norway
Valentini Pappa
Texas A&M, Energy Institute, College Station, TX 77845-3372,
USA
Christine A. Watson
Department of Crop Production Ecology, Swedish University of
Agricultural Sciences (SLU), Uppsala, Sweden
SRUC, Craibstone Estate, Aberdeen, AB21 9YA, UK
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We discuss nitrous oxide (N2O) emissions and nitrate leaching in organic arable farming, and potential mitigation strategies. The losses are low under growing crops, but crop residues may induce larger losses. The correlation between yearly total N-input and N2O emissions is weak. Cover crops, except sole legumes, have the potential to reduce nitrate leaching but may enhance N2O emissions. Optimised synchrony of mineralisation with crop N uptake will enhance crop productivity and reduce losses.
We discuss nitrous oxide (N2O) emissions and nitrate leaching in organic arable farming, and...
