Sökning: "Pest"

Visar resultat 1 - 5 av 79 avhandlingar innehållade ordet Pest.

  1. 1. Studies in pest control for cultural property

    Författare :Thomas Strang; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :HUMANIORA; HUMANITIES; Pest control; cultural property collections; insect; mould; environment; integrated pest management; IPM; thermal control; pest risk to museum collections;

    Sammanfattning : This thesis considers discrete problems of protecting cultural property from pests and examines some of the solutions. Recent decades have seen a large change in how fumigants and pesticides are used in collections of cultural property. LÄS MER

  2. 2. Structure elucidation of semiochemicals related to : Polygraphus poligraphus, Polygraphus punctifrons, Trioza apicalis, Whittleia retiella, Neodiprion edulicolus, Neodiprion scutellatus, Neodiprion knereri and Neodiprion virginianus

    Författare :Rizan Rahmani; Erik Hedenström; Dan Bylund; Mittuniversitetet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Pheromone; semiochemicals; bark beetles; pest; Polygraphus poligraphus; Polygraphus punctifrons; Trioza apicalis; Whittleia retiella; Neodiprion spp.; analysis;

    Sammanfattning : .... LÄS MER

  3. 3. Integrated pest management across spatial scales

    Författare :Laura Riggi; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Despite spectacular increases in agricultural productivity per unit of land and labour and a continually growing awareness of the importance of sustainable agriculture, modern agriculture faces serious problems at scales ranging from individual fields to regions. Such problems include increased resistance of pests to pesticides, loss of soil fertility, and loss of diversified habitats in the landscape. LÄS MER

  4. 4. Behaviour of Pine Sawflies in Relation to Pheromone-Based Pest Management

    Författare :Fredrik Östrand; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Animal ecology; effective sampling area; mark-release-recapture; climate; longevity; sampling range; Symphyta; Hymenoptera; monitoring; dispersal; polyandry; mating disruption; integrated pest management; behaviour; sex pheromone; Neodiprion sertifer; Diprionidae; Djurekologi; Zoology; Zoologi; Silviculture; forestry; forestry technology; Skogsvetenskap; skogsbruk; skogsteknik;

    Sammanfattning : Pine sawflies (Hymenoptera: Diprionidae) are severe pine defoliators. This thesis investigated sawfly behaviour related to the use of pheromones in integrated pest management, including monitoring with pheromone traps and mating disruption. LÄS MER

  5. 5. Semiochemical-mediated attraction and oviposition in pyralid moths

    Författare :Christian Olsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ekologi; Lepidoptera; behaviour; pest control; Ecology; learning; olfaction;

    Sammanfattning : Moths use chemical signals emanating from food to find sites for oviposition and subsequent larval feeding. By identifying these odours, novel approaches to pest management can be developed, such as monitoring of females in pest populations. LÄS MER