Organic EprintsKaolin as a possible treatment against lepidopteran larvae and mites in organic fruit productionG.JaastadauthorD.RøenauthorÅ-M.HelgheimauthorB.HovlandauthorO.OpedalauthorFew control methods are available in Norwegian organic fruit production that can prevent damage by early and late larvae. Also phytophagous mites are difficult to control without harming the beneficial mites. Processed kaolin function by coating trees and thus creating a physical barrier to infestation, impeding movement, feeding and egg-laying. Kaolin may reduce feeding and movement of over-wintering tortricide larvae and other larvae that hatch early in spring and have a repellent effect against egg-laying tortricide females in summer. Kaolin may also have a control effect against mites as it clings to the body and reduce feeding. Trials with kaolin were conducted in 2003, 2004 and 2005 in plum and apple orchards. Results show that kaolin reduces the population of rust mite, however it also affected the number of beneficial mites. The effect against early and late larvae was more variable. Treatments with kaolin resulted in a small reduction in early larvae and damage in some fields and years, however no clear effect against late larvae was found. The effect of kaolin will be discussed in relation to population size and number of treatments.Crop health, quality, protectionFruit and berries2006Conference paper, poster, etc.

Deposit Agreement

In depositing this eprint (a collection of files and associated bibliographic metadata), I grant Organic Eprints the right to make it permanently available on-line, with open access to all or in accordance with any access restrictions that I have specified. (Removal of eprints from the public archive is strongly discouraged, but will be granted upon request.)
I understand that Organic Eprints does not assume any responsibility if there is any breach of copyright in distributing these files or metadata.

For work being deposited by its own first author: I declare that this eprint is my own intellectual property and that I have the right to make it available in Organic Eprints in the manner chosen.

For work being deposited by someone other than its first author: I declare that I have gained the proper permissions from someone with the right to make this eprint available in Organic Eprints in the manner chosen - or that the material is in the public domain.

Clicking on the deposit button indicates your agreement to these terms. If you do not wish to deposit the eprint right now you can return to your user area, where you will find this eprint in your workspace. You can then later edit, clone and deposit it.