Haseli, Andi and Zingg, Daniel (2002) Effect of Quassan, a Quassia product, against Sawflies (Hoplocampa testudinea). [Wirkung des Quassiapraparates "Quassan" gegen die Sagewespe.] In: Boos, Markus (Ed.) Ecofruit - 10th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 31st January to 2nd February 2006 at Weinsberg/Germany, pp. 22-27.
Since reduction in effectivity 01 the bitter wood preparation Quassan in the years 1999 and 2000, the quality 01 the product had to be criticised. Quality control has since been improved, in so lar as each batch is now tested in a biotest on aphids belore dispatch. Parallel to its normal use in the lield, the effect 01 Quassan was also lield tested in 2001 against apple sawflies. Quassan was tested in dillerent concentrations per hectare and the effect compared with an untreated control as well as with plots treated with a sell-cooked Quassiawood extract. Ali the methods showed an efficacy 01 80% or more as compared with the control. Differences due to concentration per hectare used were only minimal.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Keywords:||Sawfly, Hoplocampa testudinea, Quassia|
|Subjects:|| Crop husbandry > Crop health, quality, protection|
Crop husbandry > Production systems > Fruit and berries
|Research affiliation:||International Conferences > 2002: Ecofruit|
|Deposited By:||Tagung, Ecofruit|
|Deposited On:||23 Oct 2008|
|Last Modified:||12 Apr 2010 07:38|
|Refereed:||Peer-reviewed and accepted|
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