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FenceTrap - Kombinert bruk av alternative plantevernmidler for reduksjon av insektskader i jordbær

Wibe, Atle (2020) FenceTrap - Kombinert bruk av alternative plantevernmidler for reduksjon av insektskader i jordbær. NORSØK Rapport, no. 5(5). NORSØK, Tingvoll.

[thumbnail of NORSØK RAPPORT 5(5) 2020 FenceTrap.pdf] PDF - Published Version - Norwegian/Norsk


The strawberry blossom weevil can cause great damage to strawberry plants. The weevil lays eggs inside flower buds and then sever the buds from the stems. The egg inside a bud develop into larva, pupa and adult beetle that hatch out of the bud. The insects overwinter as adult beetles and are ready to start a new life cycle when spring arrives. The strawberry blossom weevil has at several places’ shown signs of resistance to pesticides. In organic production where pesticides are not allowed, there are few measures to prevent invasion by this pest. Therefore, it is desirable to develop new methods to prevent insect damage in strawberry production. To hinder the strawberry blossom weevil from entering a newly established strawberry field of 4.0 da, a 2.3 m high insect fence was mounted around the field before planting of the strawberry plants. Both on the outside and inside the fence there were mounted funnel traps with fragrances that attract the strawberry blossom weevil. The strawberry field produced strawberries for three years and the insect fence was mounted throughout the whole period. With large migrations of strawberry blossom weevils from nearby fields, the results indicate that the insect fence prevented a significant portion of the weevils from entering the field. However, beetles were detected in the field already in the first and second year of the project, weevils that damaged the strawberry plants. The weevil population within the fence developed in line with the population in the nearby field so that the insect damages on the strawberry plants were as great within the fenced field as in the nearby field without fence and traps. Based on the results of this experiment, it is not recommended to use combined insect traps and insect fences to control the strawberry blossom beetle.

EPrint Type:Report
Keywords:Jordbærsnutebillen, insektgjerde, feller, duftstoffer, Strawberry blossom weevil, insect fence, traps, volatiles
Subjects: Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Crop health, quality, protection
Research affiliation: Norway > NLR - Norwegian Agricultural Extension Service
Norway > NORSØK - Norwegian Centre for Organic Agriculture
Deposited By: Wibe, Dr Atle
ID Code:37519
Deposited On:10 Mar 2020 07:05
Last Modified:10 Mar 2020 07:05
Document Language:Norwegian/Norsk
Refereed:Not peer-reviewed

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