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Regulierung der Kraut- und Knollenfäule der Kartoffel mit Faulbaumrinde

Krebs, Heinz; Musa, T. and Forrer, Hans-Rudolf (2007) Regulierung der Kraut- und Knollenfäule der Kartoffel mit Faulbaumrinde. [Control of potato late blight with extracts and suspensions of buckthorn bark.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

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Summary

In indoor trials with potted potato plants and in micro- and small plot field trials, prepa-rations of Frangula alnus controlled Phytophthora infestans leaf blight significantly bet-ter than other antifungal plant preparations and the copper free reference Mycosin®. However, under field conditions the efficacy of the buckthorn bark preparation (BBP) was drastically lower than in the indoor trials. Therefore and in order to avoid environ-mental pollution with solvent of the plant extract, we developed a procedure to apply finely ground plant material as suspension directly on the potato plants without any ex-traction. The efficacy of BBP applied as suspension was significantly higher than those of ethanolic extracts. To improve the weather stability or the rainfastness, BBP suspensions were amended with wood protection oils in a model trial to demonstrate the effect of a good formulation. The efficacy of these formulations proved to be as ef-ficient as copper with a dosage of 200 g ha-1 per treatment. This was also the case for a BBP with the additive Nu-Film® in a small plot field trial at Zürich-Reckenholz. How-ever, in this trial the disease pressure was low.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Kartoffeln, Pflanzenschutz potato, plant protection, late blight, bark of buckthorn, Phytophthora
Subjects: Crop husbandry > Crop health, quality, protection
Research affiliation: International Conferences > 2007: Scientific Conference on Organic Agriculture > 1 Plant and Soil > 1.4 Plant health
Deposited By: Forrer, Dr. Hans-Rudolf
ID Code:9660
Deposited On:10 May 2007
Last Modified:12 Apr 2010 07:34
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Die endgültige Version des Beitrags ist veröffentlicht in:
S. Zikeli, W. Claupein, S. Dabbert, B. Kaufmann, T. Müller und A. Valle Zárate, Hrsg. (2007)
Zwischen Tradition und Globalisierung – 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Deutschland, 20.-23. März 2007, http://orgprints.org/10742/

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