2678: Wirkung des Quassiapräparates "Quassan" gegen die Sägewespe [Effect of Quassan, a Quassai product, against Sawflies (Hoplocampa testudinea)]
(2004) Wirkung des Quassiapräparates "Quassan" gegen die Sägewespe [Effect of Quassan, a Quassai product, against Sawflies (Hoplocampa testudinea)]. Paper presented at 11th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing, Weinsberg, Deutschland, 03.-05.02.2004, page pp. 22-27. Fördergemeinschaft Ökologischer Obstbau e.V.
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Summary
Since reduction in effectivity of the bitter wood preparation Quassan in the years 1999 and 2000, the quality of the product had to be criticised. Quality control has since been improved, in so far as each batch is now tested in a biotest on aphids before dispatch. Parallel to its normal use in the field, the effect of Quassan was also field tested in 2001 against apple sawflies. Quassan was tested in different concentrations per hectare and the effect compared with an untreated control as well as with plots treated with a self-cooked Quassiawood extract. All the methods showed an efficacy of 80% or more as compared with the control. Differences due to concentration per hectare used were only minimal.
| Document Language: | English |
|---|---|
| Keywords: | Sawfly, Hoplocampa testudinea, Quassia, Bioobstbau, Beratung |
| Subject Areas: | Crop husbandry > Production systems > Fruit and berries Crop husbandry > Crop health, quality, protection |
| Research affiliation: | Switzerland > FiBL > Perennial Crops |
| Orgprints ID Number: | 2678 |
| Contact: | Häseli, Andreas |
| Deposited On: | 07 June 2004 |
| EPrint Type: | Conference paper |
| Published?: | Published |
| Peer Review Status: | Not peer-reviewed |
| Related Links: | http://www.fibl.org |
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