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Effect of alternative seed treatments on seed-borne fungal diseases in tomato

Kasselaki, A. M.; Malathrakis, N. E.; Goumas, D. E. and Leifert, C. (2007) Effect of alternative seed treatments on seed-borne fungal diseases in tomato. Poster at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

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Summary

The fungus Didymella lycopersici infects tomato seed and results in great losses before and after germination. To control the disease, seed companies use thiram preventively, although human allergy problems have been reported. For this reason as well as to address needs in organic agriculture, this study has focused on the effects of alternative methods of control. Nitrite solutions and resistance inducers were tested in a growth chamber. Results showed that soaking the seed in a nitrite solution with a concentration of 300mΜ (in citric acid buffer, pH 2) for 10 minutes reduced losses due to low seed germination and disease incidence in the germinated seedlings completely. When applied for longer intervals sodium nitrite proved phytotoxic whereas in shorter intervals it was not as effective. The resistance inducer Tillecur (mustard seed extract) at the rate of 0.05g/ml was as much effective as sodium nitrite inhibiting disease incidence in germinated seedlings. None of the above treatments was significantly different to thiram and they could replace the fungicide in the control of seedborne D. lycopersici in tomato.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:seeborne fungal diseases, tomato, Didymella lycopersici, alternative seed treatments, thiram, nitrite, resistance inducing agents
Subjects: Crop husbandry > Crop health, quality, protection
Research affiliation: European Union > QualityLowInputFood > Subproject 3: Crop production systems
International Conferences > 2007: 3rd QLIF Congress > 3 Crop production / soil management
Related Links:http://orgprints.org/10417/
Deposited By: Kasselaki, Dr. Anna-Maria
ID Code:10400
Deposited On:08 Mar 2007
Last Modified:12 Apr 2010 07:34
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:The final version of this paper is published in:
Niggli, Urs; Leifert, Carlo; Alföldi, Thomas; Lück, Lorna and Willer, Helga, Eds. (2007) Improving Sustainability in Organic and Low Input Food Production Systems. Proceedings of the 3rd International Congress of the European Integrated Project Quality Low Input Food (QLIF). University of Hohenheim, Germany, March 20 – 23, 2007. Research Institute of Organic Agriculture FiBL, CH-Frick.http://orgprints.org/10417/
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