Index Catalog // ScholarsArchive@OSU

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
Full Text:: OF THE LITERATURE Stimulatory Effect of Herbicides on Plant Growth Auxin Types Phenoxy Group. The

The influence of dormant brush sprays on forest succession in Western Oregon

Creator:: O'Dell, Tharon Earl
Abstract:: This study was designed to learn the effect a specific herbicide practice on plant communities. Data were obtained from brushfields that had been aerially sprayed with 2,4-D (2,4 dichiorophenoxyacetic acid) and/or 2,4,5-T (2,4,5 trichlorophenoxyacetic acid). Qualitative data on species composition, cover percent, height, response to herbicide and site description were...
Resource Type:: Masters Thesis

Growth and photosynthesis of plants in response to environmental stress

Creator:: Greitner, Carol S.
Resource Type:: Dissertation
Full Text:: effect of air pollutants on physiological processes in plants. Plant, Cell and Environment 12, 1-30

The effects of cadmium on the nitrogen fixation system in Alnus rubra

Creator:: Wickliff, Carlos
Abstract:: Alnus rubra (Bong. ) seedlings were grown in sand culture and irrigated with nutrient solution containing CdCl₂ ranging from 5 μg to 100 mg per liter. Treatment of A. rubra seedlings for 4 weeks with 50 and 100 mg CdCl₂ per liter of nitrogen-free nutrient solution decreased in situ nitrogenase...
Resource Type:: Dissertation
Full Text:: . 2, 3. Effect of cadmium on plant growth. 4. Foliar injury resulting from cadmium treatment. Effect

Yield, quality characteristics, and composition of Limnanthes alba seed as affected by rate, source, and date of nitrogen application

Creator:: Ayres, Thomas Arthur
Abstract:: The effect of nitrogen (N) application on seed yield of Limnanthes alba was studied for two years at two locations. Seeding following alfalfa (Medicago sativa L.) was compared to establishment after wheat (Triticum aestivum L.). Treatments used were a control (no N applied), and two rates of N (50 and...
Resource Type:: Masters Thesis
Full Text:: . Effect of Nitrogen Rates and Plant Spacing on Sunflower Seed Yields and Other Characteristics. Agron J

Ozone inhibition of transpiration and photosynthesis of two soybean (Glycine max. [L.] Merr.) cultivars

Creator:: Yingjajaval, Suntaree
Resource Type:: Masters Thesis
Full Text:: to regain photosynthetic capacity fully. The first effect of ozone was on stomatal resistance. The

Some effects of sulfur fertilization on the nutrient value of subclover-grass forage

Creator:: McCarthy, Michael J.
Abstract:: Pastures consisting of mixtures of subclover (Trifolium subterraneum) and grasses have responded to sulfur fertilization on many sites in Douglas County, Oregon. The objectives of this study were to examine specific changes in forage quality which occur as sulfur is applied in excess of the amount required for maximum yield...
Resource Type:: Masters Thesis
Full Text:: with the application of sulfur. (3) Increases in suflur content of the plant species. (4) The effect

Aluminum toxicity studies in rice (Oryza sativa L.)

Creator:: Martinez-Racines, Cesar P.
Abstract:: A nutrient solution technique developed for wheat was used to determine tolerance of rice cultivars to aluminum (Al) toxicity. Pre-germinated rice seed was placed on top of a screen and allowed to grow on the Al-free solution for 72-96 hours or until the primary root was 2-3 cms long. Seedlings...
Resource Type:: Dissertation
Full Text:: . Analysis of variance for the effect of 20 ppm Al on the number of cells in the prophase and metaphase

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Creator:: Butler, J. Hugh B.
Abstract:: The herbicide rate required to reduce growth by 50% (GR₅₀) of 11 cultivars of red fesue (Festuca rubra L. and F. rubra ssp. commutata) and for four cultivars of bentgrass (Agrostis tenuis Sibth. and A. stolonifera L. var. palustris) to sethoxydim (2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) was determined in greenhouse and laboratory experiments....
Resource Type:: Dissertation
Full Text:: and bentgrass to application of sethoxydim in the field experiment. 46 4. Effect of sethoxydim on

Nitrate reductase activity as a factor influencing the seasonal succession of marine phytoplankton

Creator:: Roelofs, Nancy Ann
Abstract:: Nitrate reductase is known to be the enzyme regulating the reduction of nitrate to nitrite in plants. This reduction is the first and rate-limiting step in the transformation of inorganic nitrate to a cellular nitrogen form. Since this reduction process is essential to phytoplankton growth when nitrate is the only...
Resource Type:: Masters Thesis
Full Text:: conditions encountered in the ocean. And third, the effect of temperature and light on enzyme levels should

ScholarsArchive@OSU

Stimulation of plant growth by sub-lethal concentrations of herbicides

The influence of dormant brush sprays on forest succession in Western Oregon

Growth and photosynthesis of plants in response to environmental stress

The effects of cadmium on the nitrogen fixation system in Alnus rubra

Yield, quality characteristics, and composition of Limnanthes alba seed as affected by rate, source, and date of nitrogen application

Ozone inhibition of transpiration and photosynthesis of two soybean (Glycine max. [L.] Merr.) cultivars

Some effects of sulfur fertilization on the nutrient value of subclover-grass forage

Aluminum toxicity studies in rice (Oryza sativa L.)

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Nitrate reductase activity as a factor influencing the seasonal succession of marine phytoplankton

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