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Effect of alternative strategies for the disinfection of tomato seed infected with bacterial canker (Clavibacter michiganensis subsp. michiganensis)

Kasselaki, A. M.; Goumas, D.; Tamm, L.; Fuchs, J.; Cooper, J. and Leifert, C. (2011) Effect of alternative strategies for the disinfection of tomato seed infected with bacterial canker (Clavibacter michiganensis subsp. michiganensis). NJAS - Wageningen Journal of Life Sciences, 58 (3-4), pp. 145-157.

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Online at: http://www.sciencedirect.com/science/article/pii/S157352141100039X


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. Ten-minute immersion of seed in 300 mmol l−1 acidified nitrite resulted in 98% being pathogen free. Copper hydroxide, certain strains of Bacillus spp. and all compost extracts resulted in 100% pathogen free seed.
© 2011 Royal Netherlands Society for Agricultural Sciences. Published by Elsevier B.V. All rights reserved.

EPrint Type:Journal paper
Keywords:Bacterial canker of tomato, Seed-borne Clavibacter michiganensis subsp., michiganensis, Acidified nitrite, Compost extracts, Bacillus antagonists
Subjects: Crop husbandry > Production systems > Vegetables
Crop husbandry > Crop health, quality, protection
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Plant Protection and Biodiversity
Related Links:http://dx.doi.org/, http://www.sciencedirect.com/science/article/pii/S157352141100039X
Deposited By: Tamm, Dr. Lucius
ID Code:19610
Deposited On:03 Nov 2011 10:37
Last Modified:07 Mar 2012 13:17
Document Language:English
Refereed:Peer-reviewed and accepted

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