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Filtering by: Committee Member Van Volk, V.

Chemical control of Elodea densa Planch. and other submersed aquatic plants as influenced by several environmental factors

Creator:

Mackenzie, John William, 1939-

Abstract:

Elodea densa Planch. was exposed to diquat (6, 7 dihydrodipyrido [1,2-a: 2', 1'-c] pyrazinediium dibromide), alone and in combination with disodium endothall (disodium salt of 7-oxabicyclo [2.2.1] heptane-2, 3-dicarboxyclic acid), and copper sulfate pentahydrate. Studies were conducted in coastal lakes of Oregon infested with E. densa. Dichlobenil (2, 6 dichlorobenzonitrile)...

Resource Type:

Dissertation
Stimulation of plant growth by sub-lethal concentrations of herbicides

Creator:

Wiedman, Steven John

Abstract:

Studies were conducted to determine the extent and nature of sub-lethal effects of herbicides on plant growth. At least one herbicide from each major chemical class of herbicides was evaluated under greenhouse conditions. Oat plants were grown in sand culture to eliminate soil interferences. Herbicides were applied pre-emergence in nutrient...

Resource Type:

Dissertation
Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

Creator:

McAuliffe, David

Abstract:

Applications of ethofumesate in Oregon have been observed from previous research and from commercial use to be less effective when applied to dry soils, even if subsequent precipitation occurred within a few days. Two field studies were established in the summer of 1979 using sweet corn (Zea mays L. 'Jubilee')...

Resource Type:

Masters Thesis
Procarbazone-sodium effect on rotational crops and its dissipation

Creator:

Al-Sayagh, Khalid Faraj

Resource Type:

Dissertation