Sökning: "Rhopalosiphum padi"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Rhopalosiphum padi.

  1. 1. 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

  3. 2. 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

  4. 3. Naturliga fiender till havrebladlöss vid en kantzon med varierad vegetation : en fältstudie av naturliga fienders förekomst vid två olika utformningar av vegetation och deras attraktion till metylsalicylat

    Kandidat-uppsats, SLU/Dept. of Ecology

    Författare :Louise Malmquist; [2017]
    Nyckelord :Araneae; Carabidae; Coccinellidae; ekosystemtjänster; havrebladlöss; integrerat växtskydd; IPM; metylsalicylat; MeSA; Staphylinidae;

    Sammanfattning : Många växtskadegörare finns inom jordbruket som kan orsaka skördeförluster. Dessa kan bland annat bekämpas med kemiska växtskyddsmedel. Pågående utfasning av aktiva substanser kräver dock utveckling av alternativa bekämpningsmetoder. LÄS MER

  5. 4. The role of midfield islets in pest control

    Master-uppsats, Institutionen för naturgeografi och kvartärgeologi (INK)

    Författare :Sabine Sigfridsson; [2013]
    Nyckelord :Agriculture; aphid interaction; biological pest control; bird cherry-oat aphid; cereal aphids; ecosystem services; landscape diversity; midfield islets; natural enemies; non-crop habitats; predators; Prunus padus; Rhopalosiphum padi; Biodiversitet; biologisk bekämpningsstrategi; ekosystemtjänster; havrebladlus; heterogent landskap; hägg; jordbruk; landskapsekologi; lusreducering; naturliga fiender; nyttoinsekter; predatorer; Prunus padus; Rhopalosiphum padi; skadeinsekter; åkerholmar.;

    Sammanfattning : During last century rising populations and changed market preferences have led to large structuralchanges in agriculture in the developed world. Most conventional cultivation methods involve theproduction of few monoculture crops within a homogenous landscape, where pesticides and inorganicfertilizers are used to increase yields. LÄS MER

  7. 5. Responses of aphids to semiochemicals released from ladybirds

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Feng Youren; [2012]
    Nyckelord :Rhopalosiphum padi L.; Coccinella septempunctata L.; residues; volatiles; track; aphid settling; aphid olfactory response;

    Sammanfattning : Predatory ladybirds, as natural enemies of aphids, can influence their prey in various ways, for example by consuming them or making the aphids drop off from their host plants. In this study, I have examined whether aphids can respond to the semiochemicals released from ladybirds. LÄS MER