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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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Goal conflicts in long-term cropping system trials - the example of carrots Organic Eprints
Modig, P.; Albertsson Juhlin, M.-L.; Gunnarsson, A.; Gissén, C..
Agricultural research on multiple cropping systems in parallel increases the potential for knowledge transfer between organic and conventional systems. This project aims to develop cropping systems towards greater sustainability through work in long-term trials that have a unique opportunity to contribute to a holistic research perspective. Data on the fourth crop rotation (2007-2012) are now being compiled. This paper presents preliminary results from cultivation of carrots as an example to demonstrate goal conflicts in organic and conventional systems between good nutrient management and good economy on one hand and nematode control and intensive cropping systems (good short-term economy) on the other. Good productivity and sustainable production levels...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Vegetables; Farm nutrient management.
Ano: 2013 URL: http://orgprints.org/24573/1/24573.pdf
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