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Filtering by: Advisor Berry, Ralph E. Commencement Year 1984

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
Studies on resistance of rice to Sogatodes oryzicola (Muir) and a parasitoid, Haplogonatopus sp., in Costa Rica

Creator:

Alvarez B., Francisco

Abstract:

Twenty-one rice cultivars were evaluated to determine the difference between populations of Sogatodes oryzicola (Muir) (Homoptera: Delphacidae) in Costa Rica and Colombia, Survival, mortality and population development of S. oryzicola on five selected cultivars was used to determine levels of plant resistance. The importance and potential of the parasitoid-predator Haplogonatopus...

Resource Type:

Masters Thesis
Effects of the garden symphylan, Scutigerella immaculata Newport, on physiological processes of bush snap bean, Phaseolus vulgaris L.

Creator:

Eltoum, Elameen M. A.

Resource Type:

Dissertation