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| Loes, A-K.; Bünemann, E.; Cooper, J.; Hörtenhuber, S.; Magid, J.; Oberson, A.; Möller, K.. |
| Organic farming systems need to replace nutrients exported via farm products, especially phosphorus (P) which may otherwise become depleted in soil in the long term. In Europe, EU regulations for organic production are shaping the farming systems with respect to inputs of nutrients. Permitted off-farm P sources include conventional animal manure, composted or anaerobically digested organic residues, rock phosphate, and some animal residues such as meat and bone meal. The recent proposed revision of EU regulations for organic production (2014) puts less emphasis on closing nutrient cycles and instead aims at minimizing off-farm inputs, to reduce the risk of importing contaminants. This development, which has received little attention from the organic sector... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Composting and manuring; Regulation. |
| Ano: 2016 |
URL: http://orgprints.org/32308/1/loes-etal2016-OrgAgri-online-p1-24.pdf |
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| Kasselaki, A. M.; Goumas, D.; Tamm, L.; Fuchs, J.; Cooper, J.; Leifert, C.. |
| Currently there is a lack of effective seed treatments for bacterial pathogens, with Cu-based compounds (the only chemical treatments permitted under organic farming standards) only providing partial control. The aim of this study was to quantify the effect of alternative treatments for the control of bacterial canker (Clavibacter michiganensis subsp. michiganensis), a major seed-borne bacterial disease in tomato. Treatments assessed were acidified nitrite (a treatment previously shown to control the seed-borne fungal disease Didymella lycopersici), antagonistic strains of Bacillus spp. and compost extracts, which were not previously evaluated as treatments for seed-borne diseases. Efficacy of treatments was determined in a seed disinfection assay.... |
| Tipo: Journal paper |
Palavras-chave: Vegetables Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/19610/1/kasselaki%2Detal%2D2011%2Dclavibacter%2DNJAS.pdf |
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