Index Catalog // ScholarsArchive@OSU

Creator:: Geddens, Ray M.
Abstract:: Eight postemergence herbicides were evaluated to determine their influence on the incidence and severity of take-all disease caused by the fungus Gaeumannomyces graminis var. tritici in winter wheat. Mecoprop ((+)-2-(4-chloro-2-methylphenoxy)propanoic acid), difenzoquat (1,2- dimethyl- 3,5- diphenyl -1H- pyrazolium), dinoseb amine (amine salt of 2-(1-methylpropy1)-4,6-dinitrophenol), and diclofopmethyl (methyl ester of (+)-2-[4-(2,4-dichlorophenoxy)...
Resource Type:: Dissertation

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...
Resource Type:: Dissertation

Creator:: Cascante Herrera, Xenia
Abstract:: A series of 3 experiments was conducted from 1984 to 1986 to determine the influence of ethylene gas treatments and ethephon [(2-chloroethyl) phosphonic acid] dips, in combination with several heat curing durations, on the performance of greenhouse-forced Blue Ribbon and Ideal iris. In the first study which examined the effects...
Resource Type:: Masters Thesis

Creator:: Bi, Guihong
Abstract:: The relationships between nitrogen (N), defoliation, and plant growth in nursery plants were studied using almond {Prunus dulcis (Mill) D. A. Webb) trees. In several experiments the effects of N source and availability on tree growth, N uptake, N remobilization, and nonstructural carbohydrates (TNC) were investigated to determine the most...
Resource Type:: Dissertation

Creator:: Albahouh, Muhammed S.
Abstract:: The closed insulated pallet system (CIPS) was evaluated for growth, yield, and fruit quality of tomato genotypes with determinate growth habit. Plants were irrigated with several levels of sodium chloride (NaCl) salinized water. Tomato growth and yield were significantly greater in CIPS than in conventional surface-irrigated containers, regardless of irrigation...
Resource Type:: Dissertation

Creator:: Fischer, Christine R.
Abstract:: Mycorrhizae are important for plant growth, particularly in nutritionally poor soils. Vesicular-arbuscular mycorrhizae (VAM) are the primary form of mycorrhizae found in tropical plants, and their persistence in the soil as colonizing fungal propagules following deforestation cannot be directly measured. Utilizing the "most probable number" (MPN) method for estimating infective...
Resource Type:: Masters Thesis

Creator:: Laywisadkul, Srisangwan
Abstract:: Container grown pear trees were used to determine the effects of the following factors on the susceptibility to Phytophthora syringae: 1) tree nitrogen (N) status and foliar sprays of urea and copper-EDTA (CuEDTA); 2) dormancy and environmental conditions; 3) wound and wound age; and 4) chemical and biological control measures....
Resource Type:: Dissertation

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