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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Efficacy of Organic Insecticides and Repellents against Brown Marmorated Stink Bug in Vegetables

Morehead, John Adam 19 July 2016 (has links)
The brown marmorated stink bug (BMSB), Halyomorpha halys (Stål), is a major pest of vegetable crops, fruit crops, and even ornamental plants in the Mid-Atlantic States. Organic growers have limited chemical options to manage this pest, and are in need of better management options. Several organically-approved insecticides including pyrethrins (Pyganic), azadirachtin (Aza-Direct), azadirachtin + pyrethrins (Azera), spinosad (Entrust), potassium salts of fatty acids (M-Pede), sabadilla alkaloids (Veratran D), extract from Burkholderia sp. (Venerate), and one experimental product, potassium salts + spinosad (Neudorff 1138), were evaluated for toxicity to BMSB nymphs and adults using lab bioassays and field trials on tomatoes and peppers. Another potential control option is to use natural chemicals to deter BMSB feeding in vegetables. Kaolinite [Al4Si4O10 (OH)8] (Surround WP); a white, plate-shaped, aluminosilicate mineral that is sprayed on plants to alter the appearance, feel, and smell of a plant to an insect. Essential oils (Ecotec) are chemicals produced by plants which are repellent and even toxic to certain insects, and by mimicking octopomine these chemicals disrupt the insect's neurotransmitters. Treatments were evaluated in choice test bioassays and field experiments on peppers using weekly applications of the highest labeled rates of the products. The results showed that, although some organically-approved insecticides demonstrate a high level of activity on BMSB in lab bioassays, none of these products appear to be effective at reducing stink bug damage to fruiting vegetables in the field. However, kaolinite provided significant control of BMSB nymphs (p=0.03) and adults (p=0.01) in both choice test bioassays and in field trials. Essential oils did not provide any significant control of BMSB in choice test bioassays or in field trials. Further research is needed to determine if the efficacy of kaolinite holds up under heavy pest pressure. / Master of Science in Life Sciences
12

The isolation and identification of volatile compounds in wheat which induce an aggregation response to the red flour beetle, Tribolium casteneum (Herbst.)

Wang, Ven-Shing January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
13

Housefly control with dry baits formulated from organic phosphorus insecticides and sugar

Berndt, Wayne Leslie. January 1955 (has links)
Call number: LD2668 .T4 1955 B49 / Master of Science
14

The isolation and identification of a natural fly attractant

James, Richard Ernest January 2011 (has links)
Digitized by Kansas Correctional Industries
15

Pink bollworm pheromone trapping: analysis of trap design, pheromone substrate and field spacing

Hoffmann, Michael Peter January 1978 (has links)
No description available.
16

Reactions of the larvae of Trogoderma parabile Beal (Coleoptera, Dermestidae) to certain food materials and selected organic compounds

Spangler, Hayward Gosse, 1938- January 1963 (has links)
No description available.
17

Development of traps for adult Glischrochilus quadrisignatus (Say) (Coleoptera:Nitidulidae) and investigation of olfactory responses to volatile components of corn, raspberry and tomato

Bourchier, Robert S. January 1986 (has links)
No description available.
18

An exploration into bear deterrents, as related to mountain biking, and the design of an ultrasonic bear warning device

Schmor, Mathew R. January 1999 (has links) (PDF)
Thesis (M. Env. Des.)--University of Calgary, 1999. / Includes bibliographical references (leaves 145-147).
19

Floral lures for attract and kill and for seasonal monitoring of alfalfa looper, corn earworm and cabbage looper moths

Camelo, Leonardo De Azevedo, January 2006 (has links) (PDF)
Thesis (Ph. D. )--Washington State University, August 2006. / Includes bibliographical references (p. 215-227).
20

Studies on the physical properties of insect bait materials

Portman, Roland Wagner January 1940 (has links)
Typescript, etc.

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