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Biogas nutrient management in organic cropping - not only a nitrogen issue Organic Eprints
Gunnarsson, A.; Asp, H..
Nutrient imbalance, mainly due to low K and high Ca and/or Mg concentrations, was a plausible explanation for low growth response to digestate fertilisation by beetroot following harvested grass-clover biogas ley. To derive the full benefit of a transition to a biogas nutrient management (BG) system, extra nutrients except for N may need to be added, especially if digestate supply is divided between many crop positions in the rotation. This is probably of extra importance on sandy soils such as that used in this experiment.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions Recycling; Balancing and resource management Farm nutrient management Post harvest management and techniques.
Ano: 2013 URL: http://orgprints.org/24555/1/24555.pdf
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Organic production systems in Northern highbush blueberries Organic Eprints
Caspersen, S.; Svensson, B.; Khalil, S.; Asp, H..
The production of highbush blueberries is increasing worldwide. Organic production of blueberries in Sweden is presently very limited but is expected to have a great potential to expand as the berries are popular and have a good shelf life. The fact that blueberries require acid soils raises several questions concerning suitable substrates in combination with mycorrhizal inoculation and fertilization in organic production systems. Field and pot experiments have been established during 2011 and 2012 with the aim of developing a sustainable production system for high quality organic blueberries. After the second experimental year, total fruit yields were similar for plants grown in a plastic tunnel and in the open field. Yields were not affected by the...
Tipo: Conference paper, poster, etc. Palavras-chave: Greenhouses and coverings; Fruit and berries.
Ano: 2013 URL: http://orgprints.org/24582/1/24582.pdf
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