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A kinetic analysis of herbicide degradation in soil

Creator:: Zimdahl, Robert L.
Resource Type:: Dissertation
Full Text:: A kinetic analysis of herbicide degradation in soil AN

How Oregon farmers select and use herbicides on wheat

Creator:: Fine, Richard Ray, 1939-
Abstract:: Questionnaires were used in a survey of Oregon farmers to determine how they select and use herbicides on wheat. Farmer's decisions were evaluated on the basis of their ability to: select the proper herbicide treatment for their weed problem and to make application at the proper time. Questionnaire scores indicated...
Resource Type:: Dissertation
Full Text:: Abstract approved: Redacted for privacy Dr. William Furtick Questionnaires were used in a survey of

The effect of EPTC on barnyard grass

Creator:: Dawson, Jean Howard
Resource Type:: Dissertation
Full Text:: ON BARNYAP D GRASS JEAN HOWARD DAWSON A THESIS submitted to OREGON STATE UNIVERSITY in

The effects of CIPC, monuron and 2,4-D herbicides on yield, crude protein and nitrate nitrogen content of four forage-crop species

Creator:: Furtick, William Ralph, 1927-
Resource Type:: Dissertation
Full Text:: SPECIES by WILLIAM RALPH FURTICK A THESIS submitted to OREGON STATE COLLEGE in partial

Chemical and physical factors in the kinetics of herbicide penetration into plants

Creator:: López, Hernán
Abstract:: Penetration has long been recognized as an important factor in the action of chemicals on plants. The effectiveness of herbicides on such plants as blackberries is often thought to be limited by the failure to obtain adequate penetration through the cuticular barrier. A number of factors, among them relative humidity,...
Resource Type:: Dissertation
Full Text:: Dr. William R. Furtick for his capable direction and council through- out the graduate program. A

Herbicidal agents as possible aids for roguing diseased seed-potato plants

Creator:: Barnes, George Lewis
Resource Type:: Dissertation
Full Text:: GEORGE LEWIS BARNES A THESIS aupmitted to OREGON STATE COLLEGE in partial fulfillment or the

Interaction of selected herbicides with soil constituents

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:: over a broad range of aqueous phase sorbate concentration. Linear equilibrium sorption constants (Kp

Differential sensitivity of two common groundsel biotypes (Senecio vulgaris L.) to several s-triazine herbicides

Creator:: Radosevich, Steven R.
Abstract:: Studies were initiated to determine the response of two common groundsel biotypes (Senecio vulgaris L. ) to several s-triazine herbicides. Herbicides tested were: 2-chloro-4,6-bis(ethylamino)-striazine (simazine), 2-chloro-4-(ethylamino)-6-(isopropylamino)- s-triazine (atrazine) 2-(sec-butylamino)-4-(ethylamino)-6-methoxys- triazine (GS-14254), 2, 4-bis(isopropylamino)-6-methoxy-striazine (prometone), 2-(tert-butylamino)-4-(ethylamino)-6-methylthio- s-triazine (terbutryn), and 2, 4-bis(isopropylamino)-6- methylthio-s-triazine (prometryne). One biotype was much more susceptible than the...
Resource Type:: Dissertation
Full Text:: . Both biotypes were resistant to terbutryn at 30 ppm. When a triazine herbicide was applied, the

Effect of Endothal and certain other selective herbicides on microbial activity in six different soils

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:: ppm and combined with Endothal were found to be suppressive. TD -47 at 100 ppm had a stimulatory

Effect of chlorpropham on vegetative and reproductive development in chewings fescue (Festuca rubra L. subsp. commutata Gaud.)

Creator:: Akobundu, I. O.
Abstract:: Experiments were conducted under field and greenhouse conditions to investigate the effects of chlorpropham (isopropyl mchlorocarbanilate) on vegetative and reproductive development in Chewings fescue (Festuca rubra L. subsp. commutata Gaud.) and to determine the time of induction and initiation under natural conditions. Chewings fescue was found to be very susceptible...
Resource Type:: Dissertation
Full Text:: found among varieties of Lolium (Cooper, 1951; Mitchell, 1953). At a certain stage after germination

ScholarsArchive@OSU

A kinetic analysis of herbicide degradation in soil

How Oregon farmers select and use herbicides on wheat

The effect of EPTC on barnyard grass

The effects of CIPC, monuron and 2,4-D herbicides on yield, crude protein and nitrate nitrogen content of four forage-crop species

Chemical and physical factors in the kinetics of herbicide penetration into plants

Herbicidal agents as possible aids for roguing diseased seed-potato plants

Interaction of selected herbicides with soil constituents

Differential sensitivity of two common groundsel biotypes (Senecio vulgaris L.) to several s-triazine herbicides

Effect of Endothal and certain other selective herbicides on microbial activity in six different soils

Effect of chlorpropham on vegetative and reproductive development in chewings fescue (Festuca rubra L. subsp. commutata Gaud.)

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