Sökning: "Aphid"

Visar resultat 1 - 5 av 23 uppsatser innehållade ordet Aphid.

  1. 1. Skadeinsekter i sockerbetor

    Kandidat-uppsats, SLU/Dept. of Ecology

    Författare :Isak Brånstrand; [2022]
    Nyckelord :Aphis fabae; Atomaria linearis; Chaetocnema concinna; Pegomya hyoscyami; Thrips angusticeps; Beta vulgaris ssp; sockerbetor; neonikotinoider; integrerat växtskydd;

    Sammanfattning : Det finns ett flertal skadeinsekter som kan angripa sockerbetor i Sverige och Danmark. 2018 förbjöds betning med neonikotionider vilket har varit ett säkert skydd mot insekter i sockerbetor. LÄS MER

  3. 2. Effects of plant-fungal interactions on volatile emission of Hordeum vulgare and aphid preference

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Bina Johansson; [2022]
    Nyckelord :volatile organic compounds; chemical communication; Trichoderma atroviride; Fusarium graminearum; Rhopalosiphum padi; biological control;

    Sammanfattning : Barley is one of the most economically important cultivated crops in the world. However, barley is a host for many insect pests and plant pathogenic fungi which is a threat to the production. Rhopalosiphum padi is an economically important insect pest that leads to large economical losses in agricultural crops such as barley. LÄS MER

  4. 3. Intercropping oats with annual clovers : effects on yields and aspects of biodiversity

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Anna Douhan Sundahl; [2021]
    Nyckelord :intercropping; cover cropping; pollinators; natural predators; weeds; clover; oats;

    Sammanfattning : The use of fertilizers, pesticides and herbicides has contributed to greatly increase the crop yields per hectare. Humanity has become reliant on artificial inputs overshadowing usage of resources from ecosystem services that we continue to weaken further, by using agricultural practises decreasing landscape and species diversity. LÄS MER

  5. 4. Virus yellows in sugar beets in Sweden and Europe

    Kandidat-uppsats, SLU/Dept. Of Plant Biology

    Författare :Alma Gustavsson Ruus; [2020]
    Nyckelord :virus yellows; BYV; BMYV; BChV; BWYV; sugar beet; Myzus persicae; green peach aphid; Aphis fabae; black bean aphid; neonicotinoids;

    Sammanfattning : This thesis describes virus yellows in sugar beets and converse both older and new knowledge about the viruses, vector and host relations and the control measures against the disease. The aim is to explore new potential control measures and to predict how the disease may affect agriculture in the future. LÄS MER

  7. 5. Diversity of barley yellow dwarf-associated viruses in winter cereals of Southern Sweden

    Master-uppsats, SLU/Dept. Of Plant Biology

    Författare :Marcelle Lauren Johnson; [2019]
    Nyckelord :barley; BYDV; luteovirus; polerovirus; Skåne; wheat;

    Sammanfattning : Barley yellow dwarf virus (BYDV) is a widespread complex of virus species of cereal crops in the world, known to infect both wild and cultivated plants of the family Poaceae, having the effect of yield reductions and subsequently large economic losses to farmers. Barley yellow dwarf disease (BYD) is a result of infection from BYDV species (genus: Luteovirus) and cereal yellow dwarf virus (CYDV; genus: Polerovirus). LÄS MER