Sökning: "Ceutorhynchus obstrictus"

Hittade 4 uppsatser innehållade orden Ceutorhynchus obstrictus.

  1. 1. Partners in crime – How cabbage seed weevil assists brassica pod midge in damaging pods of winter oilseed rape in fields in Southern Sweden : how is insect abundance related to crop damage?

    Kandidat-uppsats, SLU/Department of Biosystems and Technology (from 130101)

    Författare :Sarah Heithausen; [2020]
    Nyckelord :monitoring; Ceutorhynchus obstrictus; Dasineura brassica; Brassica napus; Integrated Pest Management; economic threshold; pan trap; sticky trap;

    Sammanfattning : The brassica pod midge (Dasineura brassicae) has emerged as an important pest causing problems in Winter Oilseed Rape (WOSR) (Brassica napus ssp. napus) production in Southern Sweden during recent years. Adult female D. brassicae oviposit into WOSR pods. LÄS MER

  2. 2. Effects of within-field and landscape factors on Dasineura brassicae in winter oilseed rape cultivations in Skåne, southern Sweden : a field survey with a special approach to pesticide-free control zones

    Master-uppsats, SLU/Department of Plant Protection Biology

    Författare :Emma Johansson; [2019]
    Nyckelord :Dasineura brassicae; brassica pod midge; Ceutorhynchus obstrictus; cabbage seedpod weevil; winter oilseed rape; rapeseed crop damages; pesticide-free control zones; withinfield factors; landscape factors;

    Sammanfattning : Winter oilseed rape (Brassica napus) is the most common oilseed crop grown in the province of Skåne in southern Sweden, where this study was performed. B. napus is often associated with various insect pests. This study regards two of these; the cabbage seed weevil (Ceutorhynchus obstrictus) and the brassica pod midge (Dasineura brassicae). LÄS MER

  3. 3. Blygrå rapsvivelns (Ceutorhynchus obstrictus) aktivitet i skånska rapsfält : dess påverkan på skador av skidgallmygga (Dasineura brassicae)

    Kandidat-uppsats, SLU/Department of Plant Protection Biology

    Författare :Karin Henriksson; [2019]
    Nyckelord :blygrå rapsvivel; skidgallmygga; höstraps; Ceutorhynchus obstrictus; Dasineura brassicae;

    Sammanfattning : Höstraps är Sveriges mest odlade oljeväxt. Den har odlats som en avbrottsgröda för att förhindra jordburna sjukdomar och för dess oljerika frön, vilka vi använder i framställning av rapsolja och margarin. Idag odlas höstraps även för framställning av biobränsle. LÄS MER

  4. 4. Landscape and within-field factors affecting the damages of the brassica pod midge (Dasineura brassicae) in Swedish winter oilseed rape cultivation

    Master-uppsats, SLU/Department of Plant Protection Biology

    Författare :Axel Rösvik; [2019]
    Nyckelord :landscape ecology; Dasineura brassicae; Ceutorhynchus obstrictus; Brassica napus; winter oilseed rap;

    Sammanfattning : The brassica pod midge (Dasineura brassicae) has been a serious upcoming problem in Swedish oilseed cultivation during recent years. This small dipteran utilized pods damaged by its facilitator, the cabbage seed weevil (Ceutorynchus obstrictus), to be able to oviposit. The larvae of D. LÄS MER