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

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

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

The metabolic pathways and physiological effects of atrazine in Douglas-fir seedlings

Creator:: Peterson, Charles Adrian
Abstract:: Herbicides are being used as a tool by forest managers to speed the restocking of sites where tree seedlings face competition from grasses for limited moisture, light and nutrients. Retarded growth or, more commonly, death of the seedlings would occur if a selective herbicide was not used to control competing...
Resource Type:: Dissertation

Laboratory studies of periphyton production and community metabolism in lotic environments

Creator:: McIntire, C. David
Abstract:: See pdf
Resource Type:: Dissertation
Full Text:: -Respiration Chamber 19 RESULTS 21 Effect of Variation in Intensity of Illumination on Primary Production 21

The effects of nitrogen, potassium and chloride on nutrient composition in Russet Burbank potatoes (Solanum tuberosum)

Creator:: Murarka, Ishwar P., 1942-
Abstract:: Three greenhouse experiments were designed to measure the effects of N, K and Cl on the nutrient uptake by Russet Burbank potatoes (Solanum tuberosum). A Deschutes sandy loam soil from Powell Butte area in Central Oregon, low in potassium, was used to study these effects. Nitrogen applications produced significant increases...
Resource Type:: Dissertation
Full Text:: ) contents, and (b) amounts of different N fractions found in plant tops. 57 8 The effects of N on the (a

Effects of irrigation and nitrogen on cauliflower development, yield and quality

Creator:: Bratsch, Anthony D.
Abstract:: Field experiments were conducted with cauliflower (Brassica oleracea var. botrytis cv. Snowball Y ) to determine crop development, yield, quality and maturity response to various seasonal water levels, and to specific water stress timing in relation to curd initiation. The effects of nitrogen rate, timing, and source and the application...
Resource Type:: Dissertation
Full Text:: environment 57 plant density 58 CHAPTERS EFFECT OF NITROGEN RATES AND TIMING ON DIFFERENTIALLY

Copper tolerance in four fungal species

Creator:: Grable, Carl Ivan
Abstract:: This study was initiated to determine the tolerance to copper of Aspergillus niger, Stemphylium sarcinaeforme, Monilinia fructicola and Fusarium oxysporum f. sp. lycopersici. Included were strains of the latter two fungi that were induced to tolerate relatively high levels of copper by continual culture on sublethal levels of the toxicant....
Resource Type:: Dissertation
Full Text:: THE THESIS OF Carl Ivan Grab le for the Ph. D. (Name) (Degree) in Plant Pathology presented on A pH

ScholarsArchive@OSU

Stimulation of plant growth by sub-lethal concentrations of herbicides

Growth and photosynthesis of plants in response to environmental stress

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

Aluminum toxicity studies in rice (Oryza sativa L.)

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

The metabolic pathways and physiological effects of atrazine in Douglas-fir seedlings

Laboratory studies of periphyton production and community metabolism in lotic environments

The effects of nitrogen, potassium and chloride on nutrient composition in Russet Burbank potatoes (Solanum tuberosum)

Effects of irrigation and nitrogen on cauliflower development, yield and quality

Copper tolerance in four fungal species

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