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Control of purple nutsedge (Cyperus rotundus L.) with glyphosate

Creator:: Chase, Richard Lyle
Resource Type:: Dissertation
Full Text:: delays of 11-23 days generally gave slightly less control. A second application to the same plots 35

The influence of herbicide placement in soil on toxicity to emerging seedlings

Creator:: Nishimoto, R. K. (Roy Katsuto), 1944-
Abstract:: Previous research has indicated several soil-applied herbicides are more effective by exposure to emerging shoots than from root uptake. Studies were conducted in the greenhouse and growth chamber to investigate effects of herbicide placement in soil on toxicity to emerging seedlings. In these studies, an inch of treated soil was...
Resource Type:: Masters Thesis
Full Text:: OF PLATES Plate Page I Soil tumbler with fixed nozzle. 11 II Site of uptake of atrazine

A proposed mechanism for diuron-induced phytotoxicity

Creator:: Stanger, Charles Earl, 1929-
Abstract:: Previous research has shown that specific carotenoid pigments function through oxidation-reduction reactions to protect chlorophyll from photooxidation in the presence of reduced nicotinamide adenine dinucleotide phosphate (NADP). The hypothesis that diuron (3-(3, 4- d chloropheny1)-1, 1-dimethylurea) initiates phytotoxicity by inhibition of NADPH synthesis was examined. All experiments were conducted in...
Resource Type:: Dissertation
Full Text:: 9 Diuron and Ascorbate + DPIP 10 Need for Functional Chloroplasts 10 Chlorophyll: Diuron Ratios 11

Control of volunteer legumes during establishment of legume seed crops with activated carbon bands and non-selective herbicides

Creator:: Rolston, M. Philip
Resource Type:: Dissertation
Full Text:: '111111141% 11' palisade layer 4. .....,,,, 4 of macrosclerids 100 B Fig. 2. Cross-section views of two

Influence of fonofos insecticide on EPTC injury to corn (Zea mays)

Creator:: Stebinger, Edward
Resource Type:: Masters Thesis
Full Text:: . Tech. Bull. Mt. View, Calif. 94042. 2 pp. 11. Waldrep, T.W. and J.F. Freeman. 1964. EPIC injury to

Degradation of the herbicide EPTC in three Willamette Valley soils

Creator:: Coleman, Quentin Charles
Abstract:: EPIC (S-ethyl dipropylthiocarbamate) is a selective herbicide which controls some annual grasses, annual broadleaves, and perennial grasses when incorporated into the soil before planting. In the last few years, reports have been received of certain fields in the Willamette Valley of Oregon in which EPIC was no longer effective. Preliminary...
Resource Type:: Masters Thesis
Full Text:: initial application (Scoggan's Farm, 1979) 11 3 The influence of the addition of extender to EPIC on

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:: column. Following esterification with a 5-ml aliquot of 11% BF3 methanol, the methyl ester of 2,4-D was

Selective control of Cirsium arvense (L.) Scop. in Mentha piperita L. with 3,6-dichloropicolinic acid

Creator:: Whitesides, Ralph E.
Abstract:: A series of field experiments was conducted during 1975 and 1976 to examine peppermint tolerance and Canada, thistle response to Dowco 290 (3, 6- dichloropicolinic acid). Peppermint oil yield and Canada thistle density were considered most important in evaluating experimental results. Peppermint tolerance to Dowco 290 was studied in weed-free...
Resource Type:: Masters Thesis
Full Text:: REVIEW Peppermint Canada Thistle Page 1 3 3 5 FIELD EXPERIMENTS 11 Peppermint Tolerance to Dowco

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:: by tansy ragwort and alfalfa applied at 402 L/ha 28 29 38 38 Table Page 11 Effect of wetting

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

Creator:: Costa, Jaime
Resource Type:: Masters Thesis
Full Text:: YELLOW NUTSEDGE VARIETIES Leaf Shape Materials and Methods Results and Discussion 10 10 10 11 Number

ScholarsArchive@OSU

Control of purple nutsedge (Cyperus rotundus L.) with glyphosate

The influence of herbicide placement in soil on toxicity to emerging seedlings

A proposed mechanism for diuron-induced phytotoxicity

Control of volunteer legumes during establishment of legume seed crops with activated carbon bands and non-selective herbicides

Influence of fonofos insecticide on EPTC injury to corn (Zea mays)

Degradation of the herbicide EPTC in three Willamette Valley soils

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

Selective control of Cirsium arvense (L.) Scop. in Mentha piperita L. with 3,6-dichloropicolinic acid

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

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

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