Index Catalog // ScholarsArchive@OSU

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

Creator:: Paller, Enrique C.
Abstract:: Greenhouse and growth chamber experiments were conducted with the following objectives: (a) to study the effects of N-1-naphthylphthalamic acid (naptalam) on shoot and tuber production, rhizome transformation, and growth of yellow nutsedge (Cyperus esculentus L.) plants; (b) to study the effects of N-phosphonomethyl glycine (glyphosate) on nutsedge plants at different...
Resource Type:: Dissertation
Full Text:: methods of weed control (16, 17, 26). The removal of susceptible annual weed species by chemical control

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
Full Text:: Sulfate, and Dichlobenil 30 VII. Herbicide Combinations in Aquatic Weed Control 66 VIII. Recreational

The physiological effects and fate of dichlobenil (2,6-dichlorobenzonitrile) in an aquatic environment

Creator:: Ogg, Alex Grant, 1941-
Abstract:: The amounts of residual dichlobenil (2,6-dichlorobenzonitrile) in water and hydrosoil were compared periodically following application of the wettable powder and granular formulations of the herbicide to separate ponds at ten pounds of active ingredient per surface acre {0.6 ppmw (parts per million by weight) }. Dichlobenil was measured by electroncapture...
Resource Type:: Dissertation
Full Text:: LITERATURE REVIEW. . . 0 ....... 4 Aquatic Weed Control. . . 4 Persistence . 0 0 . 5 Mode of Action of

Asulam for tansy ragwort control in alfalfa : field efficacy and selectivity factors

Creator:: Harper, Delbert Ray
Abstract:: Tansy ragwort (Senecio jacobaea L. ) is a poisonous weed which infests alfalfa fields in western Oregon. Studies were conducted to evaluate the effectiveness of asulam (methyl sulfanilylcarbamate)for control of tansy ragwort in alfalfa and to elucidate factors responsible for its selectivity. In seven replicated field trials in 1973 and...
Resource Type:: Dissertation
Full Text:: TANSY RAGWORT CONTROL IN ALFALFA: FIELD EFFICACY AND SELECTIVITY FACTORS Abstract approved: Redacted

A model study of a plant-herbivore system

Creator:: Stimac, Jerry Lynn
Abstract:: The dynamics of tansy ragwort, Senecio jacobaea L. , and the cinnabar moth, Tyria jacobaeae (L.) were studied with the aid of a system simulation model. The model development and validation were based on knowledge of the plant and herbivore gathered from the literature, four years of data from previous...
Resource Type:: Dissertation
Full Text:: cannot control the weed without the aid of other tactics. Maintenance of ragwort at low levels is

Risk and the selection of alternative weed management technologies in Philippine upland rice production

Creator:: O'Brien, Dennis Terrence
Resource Type:: Dissertation
Full Text:: herbicide into the traditional weed control system. The analytical framework used to determine these

An evaluation of efficiency and distributional implications of changes in weed control technology in northeast Brazil

Creator:: Young, Douglas Leonard
Resource Type:: Dissertation
Full Text:: efficiency gains, displaced agricultural workers lost eight cruzeiros in reduced weed control earnings

The impacts of government market intervention on weed control technology, income and employment : a case study of basic grain farms in El Salvador, Central America

Creator:: Fonollera, R. E. (Raymundo E.)
Abstract:: El Salvador's land resources are intensively cultivated. Labor is relatively abundant and wages are low. This study analyzed the effects of government policies and observed farm price distortions on enterprise/weed control system choices and associated income-employment effects. A regional linear programming framework was employed to analyze the effects of alternative...
Resource Type:: Dissertation
Full Text:: Title: THE IMPACTS OF GOVERNMENT MARKET INTERVENTION ON WEED CONTROL TECHNOLOGY, INCOME AND

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Creator:: Sheley, Roger Leslie
Abstract:: Cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea soistitialis L.) have invaded over 3 million ha of grasslands in the western U.S. Future management will require an understanding of the conditions, mechanisms, and processes which control species dominance, community dynamics, and desirable plant establishment in these alien dominated annual rangelands....
Resource Type:: Dissertation

Effects of 2-chloroethylphosphonic acid (Ethrel) and selected environmental factors on growth of quackgrass (Agropyron repens L. (Beauv.)) and field bindweed (Convolvulus arvensis L.)

Creator:: Akhavein, Ali Asghar, 1931-
Abstract:: The primary purposes of these studies were to investigate: (1) the effects of air temperature, soil moisture, and supplemental light on sprouting ability of quackgrass (Agropyron repens L. (Beauv. )) rhizome buds; (2) the influence of 2-chloroethylphosphonic acid (Ethrel) on growth, morphology, and regenerative capacity of quackgrass and field bindweed...
Resource Type:: Dissertation
Full Text:: breaks the dormancy of rhizome buds so that the efficacy of subsequent chemical or physical weed control

ScholarsArchive@OSU

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

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

The physiological effects and fate of dichlobenil (2,6-dichlorobenzonitrile) in an aquatic environment

Asulam for tansy ragwort control in alfalfa : field efficacy and selectivity factors

A model study of a plant-herbivore system

Risk and the selection of alternative weed management technologies in Philippine upland rice production

An evaluation of efficiency and distributional implications of changes in weed control technology in northeast Brazil

The impacts of government market intervention on weed control technology, income and employment : a case study of basic grain farms in El Salvador, Central America

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Effects of 2-chloroethylphosphonic acid (Ethrel) and selected environmental factors on growth of quackgrass (Agropyron repens L. (Beauv.)) and field bindweed (Convolvulus arvensis L.)

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search