N leaching losses for organic and conventional farming Estimated N leaching losses for organic and conventional farming in Denmark
نویسندگان
چکیده
20 MARIE TRYDEMAN KNUDSEN, IB SILLEBAK KRISTENSEN, JØRGEN BERNTSEN, BJØRN MOLT PETERSEN & ERIK STEEN KRISTENSEN Adresses: Danish Research Centre for Organic Farming (DARCOF), P.O. Box 50, DK-8830 Tjele, Denmark Research Centre Foulum, Department of Agroecology, P.O. Box 50, DK-8830 Tjele, Denmark Short title: N leaching losses for organic and conventional farming
منابع مشابه
Nitrogen leaching from conventional versus organic farming systems — a systems modelling approach
The level of nitrogen leaching from organic compared to conventional farming was evaluated by using a systems modelling approach. Two different methods were used for estimating and evaluating nitrate leaching. A simple function was used in which nitrate leaching is dependent on percolation, soil clay content, average nitrogen input and crop sequence. A nitrogen balance model was used to estimat...
متن کاملReduced nitrate leaching and enhanced denitrifier activity and efficiency in organically fertilized soils.
Conventional agriculture has improved in crop yield but at large costs to the environment, particularly off-site pollution from mineral N fertilizers. In response to environmental concerns, organic agriculture has become an increasingly popular option. One component of organic agriculture that remains in question is whether it can reduce agricultural N losses to groundwater and the atmosphere r...
متن کاملDoes organic farming reduce environmental impacts?--a meta-analysis of European research.
Organic farming practices have been promoted as, inter alia, reducing the environmental impacts of agriculture. This meta-analysis systematically analyses published studies that compare environmental impacts of organic and conventional farming in Europe. The results show that organic farming practices generally have positive impacts on the environment per unit of area, but not necessarily per p...
متن کاملApproaches to assess the environmental impact of organic farming with particular regard to Denmark
Ever increasing attention is being paid to the environmental impact of intensive agricultural practices, and in this context organic farming is gaining recognition as a relatively friendly production system. In general, the risk of harmful environmental effects is lower with organic than with conventional farming methods, though not necessarily so. This review examines organic farming in the li...
متن کاملInorganic Nitrogen Leaching from Organic and Conventional Rice Production on a Newly Claimed Calciustoll in Central Asia
Characterizing the dynamics of nitrogen (N) leaching from organic and conventional paddy fields is necessary to optimize fertilization and to evaluate the impact of these contrasting farming systems on water bodies. We assessed N leaching in organic versus conventional rice production systems of the Ili River Valley, a representative aquatic ecosystem of Central Asia. The N leaching and overall...
متن کامل