Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"weed biological control"”.
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Ecological interactions of biological control agent, Mecinus Janthinus Germar, and its target host, Linaria Dalmatica (L.) Mill.
… the success of introduced agents for classical weed biological control. Field evaluation of an insect's establishment, spread and early host impact within its new environment must be performed before agent success can either be doucmented or predicted. Population attributes of the ednophagous …
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Undercover predators: Vegetation mediates foraging, trophic cascades, and biological control by omnivorous weed seed predators
<p>Weed pressure is the most costly challenge that vegetable growers face, requiring more labor investment than other production inputs. Vertebrate and invertebrate seed predators destroy a large percentage of weed propagules on the soil surface, and their ecosystem services may ease labor …
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Impact of Roadside Maintenance Practices on Larinus minutus (Gyllenhal), a Biological Control Agent of Spotted Knapweed
<p>Spotted knapweed, Centaurea stoebe, is an invasive weed found throughout much of the United States. Spotted knapweed is a rangeland weed where it was originally introduced into western North America in the 1880s.Where spotted knapweed spread to the southeastern U.S., it is found mostly along …
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Allee effects and the persistence of small populations
… pressure on establishment success. By using a weed biological control agent, Neolema ogloblini, as a model insect pest species, I investigated the impact of propagule size on establishment success and found evidence that cautiously supports the existence of a strong demographic Allee effect …
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Interaction of Kudzu, Pueraria montana (Lour.) Merr. var. lobata (Willd.) and Arthropods in North Carolina
This project was undertaken to better understand the ecology of kudzu growing in the United States, and to determine differences between plants from North Carolina and from the native range of this plant, in China. Specific goals of this project were to: 1) evaluate the development and feeding of a …