Index Catalog // ScholarsArchive@OSU

Creator:: Johns, Elvy Earl
Resource Type:: Masters Thesis
Full Text:: b.TCA 32 c. 2,!i,-T 32 Figure L1.. Herbicide Soil Count3. Fungi. a.IPC 33 b. TCA 33 c. 2,Li,S

Creator:: Duke, William B.
Abstract:: Atrazine, atratone and ametryne are asymmetric s-triazine herbicides used pre- and post-emergence on many crops. Under conditions unfavorable for microbial activity, these compounds may persist in the soil for long periods of time. This study was conducted to determine the influence of the soil microflora upon atrazine, atratone and ametryne...
Resource Type:: Masters Thesis
Full Text:: remain i.n the soiL for long perlods of time. This nay cause a serious probiem from herbicide solL

Creator:: Skipper, H. D. (Horace D.)
Abstract:: Atrazine is an asymmetrical s-triazine herbicide used pre- and post-emergence for the control of weeds in many crops. Under conditions considered unfavorable for microbial activity, atrazine may persist in soils for extended periods of time. However, the significance of chemical versus microbial degradation is not known. This study was conducted...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy (Major professor) Atrazine is an asymmetrical s- triazine herbicide used pre- and

Creator:: Au, Frederick Hung Fo
Abstract:: The effect of Endothal (3, 6-endoxyhexahydrophthalic acid), sodium pentachlorophenate (Na-PCP) and TD-47 (di-N, N-dimethylcocoamine salt of Endothal) on the microbial populations, ammonification, nitrification and respiration in six different soils was investigated. It was found that Endothal at 20 and 200 ppm had no adverse effect on the microbial population, ammonification,...
Resource Type:: Dissertation
Full Text:: residue of the herbicide in the soil. Associated problems with soil residues are: movement by leaching

Creator:: Gaynor, John Donald
Abstract:: The physical and chemical properties of soils greatly affect the toxicity of bromacil and picloram. Consequently, a knowledge of the parameters which influence the soil inactivation of these herbicides is necessary to determine proper application rates for good weed control. Enhancement in phytotoxicity with the addition of surfactants or surface...
Resource Type:: Masters Thesis
Full Text:: application, soil physi- cal and chemical properties and herbicide formulation. As a function of these

Creator:: Schreiber, Jonathon Dennis
Resource Type:: Dissertation
Full Text:: system. The entire quantity of a given amount of herbicide applied to a soil system is not adsorbed, but

Creator:: El-Madhun, Yousef Abdel Wahab
Abstract:: The behavior of six herbicides in soil was studied under controlled laboratory conditions. Sorption of bromacil, chiorotoluron and diuron was assessed by the batch equilibration procedure over a broad range of aqueous phase sorbate concentration. Linear equilibrium sorption constants (K[subscript p]) were slightly higher at 4° C than at 25°...
Resource Type:: Dissertation
Full Text:: . Temperature affected degradation more than did soil type or initial herbicide concentration. The degradation

Creator:: Frey, David W.
Abstract:: In intensively managed forest plantations in the northern Oregon Coast Range, herbicides are often applied during site preparation and early stand regeneration to reduce competition for resources for planted conifer seedlings. In addition to reducing competition for crop trees, herbicide applications may affect soil processes including decomposition and nutrient cycling,...
Resource Type:: Masters Thesis
Full Text:: conifer seedlings. In addition to reducing competition for crop trees, herbicide applications may affect

ScholarsArchive@OSU