Index Catalog // ScholarsArchive@OSU

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:: Dombrosky, Scott A.
Abstract:: The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
Resource Type:: Masters Thesis
Full Text:: Impact of insects on seed production in a Douglas-fir seed

Sampling and estimating populations of insect seed-predators in coniferous forests

Creator:: Russell, Malcolm Howard
Resource Type:: Masters Thesis
Full Text:: Sampling and estimating populations of insect seed

The life history and habits of a new species of seed midge, Dasyneura Sp., which attacks Ladino clover

Creator:: Bishop, Guy William
Resource Type:: Masters Thesis
Full Text:: Southern Oregon. Because of its similar appearance this insect was thought to be the clover- seed midge

Insect pests of economic importance on cereal crops in the Senegal River Basin, West Africa

Creator:: Sy, Adama
Abstract:: Cereal crops cultivated in Mali, Mauritania and Senegal consist primarily of sorghum, millet, rice and maize. They form the gramineous crops that, are programmed for the agricultural improvement of the Senegal River Basin. Twelve economically important insect pests on these crops were selected for study and treated with regard to...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Entomology presented on June 10, 1977 Title: INSECT PESTS OF ECONOMIC IMPORTANCE

Biology of Cnephasia longana Haworth : an insect pest of several important crops in Oregon

Creator:: Edwards, W. D. (William Donald), 1904-
Resource Type:: Masters Thesis
Full Text:: Biology of Cnephasia longana Haworth : an insect pest of

Effects of tillage on emergence of mint root borer, Fumibotys fumalis Guenée, and on other agronomic factors in peppermint, Mentha piperita L.

Creator:: Talkington, Michael Lee
Abstract:: Studies were conducted in the Willamette Valley of western Oregon to evaluate the effects of plowing (7.5-15 cm deep) and disking (5-10 cm deep) in peppermint, Mentha piperita L., on the following factors: 1) emergence of adult "mint root borer", Fumibotys fumalis Guenée; 2) suppression of common groundsel, Senecio vulgaris...
Resource Type:: Masters Thesis
Full Text:: Effects of Til Effects of Til Effects of Til Effects of Til Yield lage on Mint Root Borer and Insects 4

Insect pests affecting clover in Oregon

Creator:: Anderson, Ernest Clifford
Resource Type:: Masters Thesis
Full Text:: seed grower has to contend with the insects that attack the seed itself or the sexual parts of the

A chalcid parsite, Dinarmus acutus Thomson, of the vetch bruchid, Bruchus brachialis Fahraeus

Creator:: Leong, Kingston Lin Hoy, 1940-
Resource Type:: Dissertation
Full Text:: laboratory and field conditions. The host insect was the vetch bruchid, Bruchus brachialis Fahraeus. Surveys

Plant architectural barriers to feeding site selection by the meadow spittlebug, Philaenus spumarius (L.)

Creator:: Hoffman, George D.
Abstract:: While current theories describing the insect-plant interaction have emphasized the biochemical aspects of the relationship, morphological components can also play a significant role in determining which plants or tissues are susceptible to insect attack. Xylem sap on which spittlebugs feed may lack many of the plant compounds responsible for host...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy Dr. Peter B. McEvoy. While current theories describing the insect-plant interaction

Salivation and engorgement parameters of sucking insect vectors : implications in pathogen transmission

Creator:: Shieh, Jong-neng
Abstract:: The probing behavior and feeding activity of green peach aphid, Myzus persicae Sulzer, on Bacillus thuringiensis ssp. tenebrionis- transgenic potatoes, insecticide treated potatoes, and host plants with different preference were electronically monitored. I found that first, transgenic potatoes had no effect on green peach aphid probing suggesting that transmission of...
Resource Type:: Dissertation
Full Text:: Parameters of Sucking Insect Vectors: Implications in Pathogen Transmission Abstract approved: P lippe A

ScholarsArchive@OSU

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Sampling and estimating populations of insect seed-predators in coniferous forests

The life history and habits of a new species of seed midge, Dasyneura Sp., which attacks Ladino clover

Insect pests of economic importance on cereal crops in the Senegal River Basin, West Africa

Biology of Cnephasia longana Haworth : an insect pest of several important crops in Oregon

Effects of tillage on emergence of mint root borer, Fumibotys fumalis Guenée, and on other agronomic factors in peppermint, Mentha piperita L.

Insect pests affecting clover in Oregon

A chalcid parsite, Dinarmus acutus Thomson, of the vetch bruchid, Bruchus brachialis Fahraeus

Plant architectural barriers to feeding site selection by the meadow spittlebug, Philaenus spumarius (L.)

Salivation and engorgement parameters of sucking insect vectors : implications in pathogen transmission

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search