Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2015
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Raphael C. Castilho Vanessa S. Duarte Gilberto J. de Moraes Karin Westrum Nina Trandem Luiz Carlos D. Rocha Italo Jr Delalibera Ingeborg KlingenAbstract
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Johannes BreidenbachAbstract
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Björn Ringselle Göran Bergkvist Helena Aronsson Lars AnderssonAbstract
Two potential control methods for Elymus repens, which do not disturb the soil, are post-harvest mowing and competition from under-sown cover crops. Our aim was to quantify the effect of cover crop competition and mowing on E. repens and to evaluate the potential for combining the two methods. We present a two-factorial split-plot experiment conducted at three locations in Sweden, in two experimental rounds conducted in 2011–2012 and 2012–2013. A spring cereal crop was under-sown with perennial ryegrass, red clover or a mixture of the two (subplots). Under-sown crops were either not mowed, or mowed once or twice post-harvest (main plots). This was followed by ploughing and a new spring cereal crop the next year. Mowing twice reduced autumn shoot biomass by up to 66% for E. repens and 50% for cover crops compared with the control, twice as much as mowing once. Pure ryegrass and mixture treatments reduced E. repens shoot biomass by up to 40% compared with the control. Mowing twice reduced rhizome biomass in the subsequent year by 35% compared with the control, while the pure red clover treatment increased it by 20–30%. Mowing twice and treatments including red clover resulted in higher subsequent grain yields. We concluded that repeated mowing has the potential to control E. repens, but a low-yielding cover crop has insufficient effect on rhizome biomass. Clover–grass mixtures are of interest as cover crops, because they have the potential to increase subsequent crop yield and even at low levels they reduce E. repens above-ground autumn growth.
Authors
Barry Goodell Jody Jellison Yuan Zhu Liangpeng Zhuang Vincent Eijsink Makoto Yoshida Gry Alfredsen Valdeir Arantes Sai Venkatesh Pingali Hugh Michael O’NeilAbstract
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Henrik Egelyng Anita Romsdal Rasa Slizyte Ana Karina Carvajal Laura Jouvenot Marie Hebrok Kaisu Honkapää Jens Petter Wold Randi Seljåsen Marit AursandAbstract
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Bjørn Egil FløAbstract
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