Control of Hoplocampa testudinea using the extract from Quassia amara in organic apple growing

V. Psota, J. Ouředníčková and V. Falta
Additional contact information
V. Psota: Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic
J. Ouředníčková: Research and Breeding Institute of Pomology Holovousy, Ltd., Holovousy, Czech Republic
V. Falta: Crop Research Institute, Praha-Ruzyně, Czech Republic

Horticultural Science, 2010, vol. 37, issue 4, 139-144

Abstract: In 2008 and 2009 the effects of quassin and neoquassin (oxygenated triterpenes) on apple sawfly (Hoplocampa testudinea Klug, 1814) were studied. In the Czech Republic, monitoring was carried out in small-plot trials and in one laboratory experiment. The extract containing quassin and neoquassin was made by boiling wood chips of a tropical shrub Quassia amara L. (Sapindales: Simaroubaceae). The experimental dosages were 3, 4.5, 6, and 9.25 kg of wood chips/ha. Spray treatment with the quassia extract was carried out just before most larvae hatched out. It was statistically proven that the extract from the wood of Q. amara reduced the apple sawfly infestation of fruitlets. Extract in the dosage corresponding to 3-4.5 kg of quassia wood chips for 1/ha appeared as optimal. The efficacy of these dosages was approximately 40-50%, and the efficacy above 80% was record.

Keywords: apple orchard; organic farming; Malus domestica; pest control; apple sawfly (search for similar items in EconPapers)
Date: 2010
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://hortsci.agriculturejournals.cz/doi/10.17221/76/2009-HORTSCI.html (text/html)
http://hortsci.agriculturejournals.cz/doi/10.17221/76/2009-HORTSCI.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlhor:v:37:y:2010:i:4:id:76-2009-hortsci

DOI: 10.17221/76/2009-HORTSCI

Access Statistics for this article

Horticultural Science is currently edited by Ing. Eva Karská (Executive Editor)

More articles in Horticultural Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().