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Factors influencing metribuzin use in strip-planted wheat

Creator:: Zeghida, Ali
Abstract:: Equipment for strip-till planting is under development in wheat-fallow rotations in the Columbia Basin of Oregon. This involves the absence of tillage during the fallow season. At planting time, the strip-till planter creates a narrow band into which the wheat seed is placed. The area between the rows is undisturbed...
Resource Type:: Masters Thesis
Full Text:: maintain the suspen- sion. No major differences were observed between comparable formula- tions of Sencor

Some physiological and biochemical aspects of haloxyfop herbicidal activity alone or mixed with dicamba

Creator:: Alvarado, Renan A.
Resource Type:: Dissertation
Full Text:: averaged ± 9% of the means. No GR50 values were calculated for the mixtures with dicamba because no

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Creator:: Butler, J. Hugh B.
Abstract:: The herbicide rate required to reduce growth by 50% (GR₅₀) of 11 cultivars of red fesue (Festuca rubra L. and F. rubra ssp. commutata) and for four cultivars of bentgrass (Agrostis tenuis Sibth. and A. stolonifera L. var. palustris) to sethoxydim (2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) was determined in greenhouse and laboratory experiments....
Resource Type:: Dissertation
Full Text:: of activity at Rf 0.50. At 6 days, no Rf 0.25 or Rf 0.50 metabolites were detected in bentgrass

Stimulation of plant growth by sub-lethal concentrations of herbicides

Creator:: Wiedman, Steven John
Abstract:: Studies were conducted to determine the extent and nature of sub-lethal effects of herbicides on plant growth. At least one herbicide from each major chemical class of herbicides was evaluated under greenhouse conditions. Oat plants were grown in sand culture to eliminate soil interferences. Herbicides were applied pre-emergence in nutrient...
Resource Type:: Dissertation
Full Text:: pre-emergence in nutrient solution. No drainage of the herbicide solution was allowed. Plants were

Non-herbicidal effects of dinoseb on winter wheat yields

Creator:: Valverde, Bernal E.
Abstract:: A series of experiments were conducted from 1983 to 1985 to determine the effects of dinoseb [2-(1-methylpropyl)-4,6-dinitrophenol] on winter wheat (Triticum aestivum L. em Thell) yields. Field trials on dinoseb timing and dinoseb plus supplemental pesticides were established in an effort to elucidate the possible factors involved in the yield...
Resource Type:: Masters Thesis
Full Text:: diseases (13, 31). In some cases, however, negative results or no effect of dinoseb application have been

Persistence of prodiamine and norflurazon herbicides in soil and their activity on alfalfa rotational crops

Creator:: Fischer, Vernon F.
Abstract:: Norflurazon [4-chloro-5-(methylamino)-2(3-(trifluoromethyl) phenyl)- 3(2H)- pyridazinone] and prodiamine (N3, N3-di-n-propy1-2,4- dinitro-6-(trifluoromethyl)-m-phenylenediamine) are two herbicides being considered for weed control in alfalfa. Rotational crops following alfalfa may be sensitive to residues of these herbicides. Studies were conducted in Oregon and Washington to examine the soil persistence and activity of these herbicides on...
Resource Type:: Masters Thesis
Full Text:: BIBLIOGRAPHY APPENDICES 16 44 46 50 LIST OF FIGURES Figure No. Page 1. 2. 3. 4. 5. 6

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Creator:: Tanphiphat, Karin
Abstract:: Tuber oatgrass (Arrhenatherum elatius (L.) Presl. var. bulbosum (Willd.) Spenn.) is a perennial grass that often becomes a weed problem in Western Oregon. Control efforts using glyphosate often give unsatisfactory results. The effects of several factors on development of tuber oatgrass were investigated. Long days and cool temperatures (16/8h, 20/10C...
Resource Type:: Dissertation
Full Text:: Translocation of 14C- glyphosate to dormant 93 corms (Experiment 1) 20 Translocation of "C-glyphosate to

Effect of two methylcarbamates on the toxiciity of isopropyl m-chlorocarbanilate (chlorpropham) to safflower (Carthamus tinctorius L.) and common buckwheat (Fagopyrum esculentum Moench.)

Creator:: Kirkland, Kenneth
Abstract:: Addition of the methylcarbamate compounds p-chlorophenyl N-methylcarbamate (PPG-124) and 1-naphthyl N-methylcarbamate (carbaryl) to various herbicides has resulted in reduced rates of degradation. Carbaryl affects the degradation of certain herbicides in both plants and soils while PPG-124 has only been demonstrated to affect degradation in soils. Both these materials are effective...
Resource Type:: Masters Thesis
Full Text:: of isopropyl m-chlorocarbanilate (chlorpropham) in the soil. No work has been published on the

Influence of soil moisture on the movement of bromacil in soil

Creator:: Ross, Claude Gray
Abstract:: In previous research, bromacil gave good performance when it was applied in early fall with fairly dry soil conditions and before the fall germinating weeds had started growth. On the other hand, if bromacil was applied in late November, December, or January on nearly saturated soil with weeds that had...
Resource Type:: Masters Thesis
Full Text:: application and irrigation. Bioassay of core segments taken from the top six inches of soil showed no

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

Creator:: Fechtig, Allen David
Abstract:: After nearly 20 years of commercial use in orchards without apparent tree injury in Oregon and Washington, 2,4-D [(2,4-dichlorophenoxy) acetic acid] was reported in 1970 to cause injury to apple and pear trees in Washington. In the early 1970's, there was widespread concern among growers, researchers, and processors in the...
Resource Type:: Dissertation
Full Text:: samples was rapid in these experiments. Approximately 98% of it was lost after 21 days. At 28 days, no

ScholarsArchive@OSU

Factors influencing metribuzin use in strip-planted wheat

Some physiological and biochemical aspects of haloxyfop herbicidal activity alone or mixed with dicamba

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Stimulation of plant growth by sub-lethal concentrations of herbicides

Non-herbicidal effects of dinoseb on winter wheat yields

Persistence of prodiamine and norflurazon herbicides in soil and their activity on alfalfa rotational crops

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Effect of two methylcarbamates on the toxiciity of isopropyl m-chlorocarbanilate (chlorpropham) to safflower (Carthamus tinctorius L.) and common buckwheat (Fagopyrum esculentum Moench.)

Influence of soil moisture on the movement of bromacil in soil

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

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