Index Catalog // ScholarsArchive@OSU

Trichoderma spp. : distribution in stumps infested with Phellinus weirii and growth and antagonism in vitro

Creator:: Goldfarb, Barry
Abstract:: To determine which isolates will most rapidly replace Phellinus weirii in stumps and roots, Trichoderma spp. were isolated from P. weirii-infested stumps and roots, identified, and examined for growth rates and lethal effects on P. weirii in vitro. Phellinus weirii-infested Douglas-fir stumps and stump roots were sampled for microorganisms by...
Resource Type:: Masters Thesis
Full Text:: 2 has been shown to survive in stumps and roots for up to 50 years (Hansen, 1979). Control of

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Creator:: Perkins, Lora B.
Abstract:: There is growing interest in using nutrient manipulations to control invasive plants such as Brornus lectorurn L. (cheatgrass). Both labile (sucrose) and recalcitrant (straw and sawdust) carbon sources are added to the soil surface to reduce plant available soil N via soil microbial immobilization. However, the application rates used in...
Resource Type:: Masters Thesis
Full Text:: . Pyke Patricia S. Muir There is growing interest in using nutrient manipulations to control invasive

Assessment of potato tuber blight caused by Phytophthora infestans

Creator:: Glass, Jenny Rebecca
Abstract:: Late blight, caused by Phytophthora infestans, is a devastating problem to potato production in many parts of the world. While the foliar phases of this disease are well characterized, tuber infection, leading to quality losses and disease perpetuation, is less well understood. Experiments were conducted during 1998 and 1999 in...
Resource Type:: Masters Thesis
Full Text:: the appropriate control, black polyethylene film reduced tuber blight incidence by 10 to 24% while

Modification of phyllosphere environments to enhance establishment of Gliocladium roseum, an antagonist of Botrytis cinerea

Creator:: Bennett, Robert J. (Robert Joe), 1953-
Abstract:: Radial colony growth of three isolates of Gliocladium roseum and three isolates of Bottytis cinerea were measured on 1/4 strength potato dextrose agar amended with concentrations of NaHCO₃ ranging from 0-2% (w/v). Compared to the control, reductions in colony diameter of the B. cinerea isolates ranged from 60-79% and 73-89%...
Resource Type:: Masters Thesis
Full Text:: with concentrations of NaHCO3 ranging from 0-2% (w/v). Compared to the control, reductions in colony

Potential of Trichoderma sp. for inhibition of Botrytis cinerea and Sclerotinia sclerotiorum on snap beans

Creator:: Nelson, Mark E.
Abstract:: Isolates of Trichoderma spp. collected from snap bean foliage were tested for inhibition of grey mold of snap beans caused by Botrytis cinerea. In a detached blossom-pod assay an isolate of Trichoderma hamatum reduced pod rot by 94% compared to the nontreated check. Control was comparable to that obtained with...
Resource Type:: Masters Thesis
Full Text:: nontreated check. Control was comparable to that obtained with the fungicide vinclozolin. As few as 42

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis
Full Text:: understand invasion dynamics to help with prevention, control and mitigation of invasive species

Enhancement of biological control for postharvest diseases of pear

Creator:: Benbow, Jesse M.
Abstract:: Yeast biocontrol agents that were applied to 'Bose' and 'Anjou' pears in the field up to three weeks prior to harvest were found to survive on the fruit at high population levels on both pear varieties. Cryptococcus infirmo-miniatus, Cryptococcus laurentii, and Rhodotorula glutinis maintained populations averaging 5 x 10⁶ cfu/fruit...
Resource Type:: Masters Thesis
Full Text:: Enhancement of biological control for postharvest diseases of

Biology, epidemiology, and biological and chemical control of Phytophthora vignae

Creator:: Fernando, W. Gerard Dilantha
Abstract:: Phytophthora vignae, causal agent of stem and root rot of cowpea (Vigna unguiculata), was reported for the first time in Sri Lanka. The pathogen was found in cowpea field soils from 3 of 5 geographic regions sampled. Only one site however, had plants exhibiting disease symptoms. Of the eight cowpea...
Resource Type:: Dissertation
Full Text:: control of Phytophthora vignae AN ABSTRACT OF THE THESIS OF W. Gerard Dilantha Fernando for the degree

Effect of soil water pressures on population dynamics of Fusarium equiseti, Glocladium virens, Talaromyces flavus and Trichoderma viride, biocontrol agents of Verticillium dahliae in potatoes

Creator:: Hussain, Shaukat
Resource Type:: Masters Thesis
Full Text:: alternative methods to suppress plant diseases. Biological control of plant pathogens through antagonistic

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

Creator:: Wallace, Patricia K.
Abstract:: The leaf surface is a stark environment for bacterial colonists with limited availability of nutrients, water and protected niches. Despite these limitations, a plethora of bacteria appear to have adapted ways to survive and flourish on leaf surfaces. One mechanism of survival is the formation of biofilms. Biofilms are a...
Resource Type:: Masters Thesis
Full Text:: . Biofilm formation could assist in biological control agents surviving on leaf surfaces. Burholderia

ScholarsArchive@OSU

Trichoderma spp. : distribution in stumps infested with Phellinus weirii and growth and antagonism in vitro

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Assessment of potato tuber blight caused by Phytophthora infestans

Modification of phyllosphere environments to enhance establishment of Gliocladium roseum, an antagonist of Botrytis cinerea

Potential of Trichoderma sp. for inhibition of Botrytis cinerea and Sclerotinia sclerotiorum on snap beans

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Enhancement of biological control for postharvest diseases of pear

Biology, epidemiology, and biological and chemical control of Phytophthora vignae

Effect of soil water pressures on population dynamics of Fusarium equiseti, Glocladium virens, Talaromyces flavus and Trichoderma viride, biocontrol agents of Verticillium dahliae in potatoes

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

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