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

Creator:: Alvarado, Renan A.
Resource Type:: Dissertation
Full Text:: soybean, B = combined roots and shoots of tall fescue, C = roots of red fescue, and D = shoots of red

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:: disappearance curve. The exponential equation: Y = C. e'd was used to draw the fitted curve of disappearance

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:: : Arrhenatherum elatius (L.) Mert. et K. var. bulbosum (Willd.) Spenn. C. R. Acad. Sci. Paris. 272:2174-2176. LE

Effects of lactofen herbicide on cellular uptake of glyphosate herbicide in malva parviflora L.

Creator:: Wells, Barbara Heard
Abstract:: Time-course growth chamber studies were conducted on little mallow (Malva parviflora L.) to determine whether sublethal doses of lactofen (1'-(carboethoxy)ethyl-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2- nitrobenzoate) would enhance uptake of glyphosate (N'-(phosphonomethyl) glycine) by altering membrane permeability. Lactofen-induced membrane peroxidation was determined by harvesting leaf discs, measuring stress ethylene evolution, and recording increases in...
Resource Type:: Dissertation
Full Text:: penetration, and c) plasma membrane penetration. Cuticular and cell wall penetration occur by simple

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

Creator:: Valverde, Bernal E.
Abstract:: Growth of individual goosegrass (Eleusine indica (L) Gaertn.) plants of three dinitroaniline-herbicide resistant (R) and three susceptible (S) biotypes from North Carolina, South Carolina, and Mississippi was analyzed in greenhouse experiments. Leaf area and biomass measurements, including root, shoot, above-ground, and total dry weights were similar among the biotypes studied....
Resource Type:: Dissertation
Full Text:: . A. K., J. H. HOBE, J. C. WESSELIUS, and J. J. S. VAN RENSEN. 1986. Comparison of photosynthetic

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

Creator:: Diop, Amadou Makhtar
Abstract:: Field, screenhouse, and laboratory experiments were conducted to study weed interference in rice grown on hydromorphic soils at the International Institute of Tropical Agriculture (IITA) at Ibadan, Nigeria. Rice and weeds emerged at the same time, 1 week after planting. Weed dry weight was significantly reduced when the crop was...
Resource Type:: Dissertation
Full Text:: Burrill, G. Crabtree, and D. C. England for their time and support they have given me. I also thank R. D

Behavior of metribuzin and ethylmetribuzin in soil

Creator:: Peek, Daniel C.
Abstract:: The behavior of metribuzin [4-amino-6-(1,1- dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] and ethyl-metribuzin (4-amino-6-(1,1-dimethylethyl)-3- (ethylthio)-1,2,4-triazin-5(4H)-one] in soil was studied to determine if differences in herbicide behavior in soil could explain (a) the inconsistent herbicidal activity of these chemicals and (b) the greater activity of metribuzin, as compared to ethyl-metribuzin. Metribuzin had higher activity than ethyl-metribuzin...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Daniel C. Peek for the degree of Doctor of Philosophy . in Crop Science

Biology of Bromus rigidus : interference in winter wheat, seed longevity in the soil, and vernalization requirements for flowering

Creator:: Gleichsner, Jean Ann
Resource Type:: Dissertation
Full Text:: requirement for vernalization in order to flower. In greenhouse studies, cold treatment (5 + 2 C) of 2, 4

Factors affecting selective weedy rye (Secale sp.) control in winter wheat with the herbicide ethiazin

Creator:: Diener, Phillip R.
Abstract:: Weedy rye (Secale spp.) is a weed in the winter-wheat- growing regions in the Pacific Northwest and surrounding regions. Ethiazin (4-amino-6-(1,1-dimethylethyl)-3- (ehtylthio)-1,2,4-triazine-5 (4H)-one) has shown selective control of weedy rye in the cultivar 'Stephens', (Triticum aestivum). Field, greenhouse, and outdoor pot experiments were conducted to determine factors influencing selectivity. Field...
Resource Type:: Masters Thesis
Full Text:: genus (see Appendix C). The rapid spread of the volunteer rye may be the result of few reliable

Germination and growth characteristics of five accessions of jointed goatgrass (Aegilops cylindrica)

Creator:: Gleichsner, Jean A.
Abstract:: Laboratory and field studies were conducted at Pendleton, Oregon, during 1983 and 1984 to evaluate germination and growth characteristics of five jointed goatgrass (Aegilops cylindrica Host) accessions collected from sites in Echo, Ione, Pendleton, Condon, and Elgin, Oregon. Spikelets were germinated for 27 days at room (23 +̲ 2 C)...
Resource Type:: Masters Thesis
Full Text:: 8.3 g-j 48.0 b-d 7.5 g-j 48.8 b-d 47.5 b-d 35.3 de 52.0 a-d 23 4.8 h-k 16.5 fg 3.5 i-k 55.8 a-c 62.8

ScholarsArchive@OSU

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

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.)

Effects of lactofen herbicide on cellular uptake of glyphosate herbicide in malva parviflora L.

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

Behavior of metribuzin and ethylmetribuzin in soil

Biology of Bromus rigidus : interference in winter wheat, seed longevity in the soil, and vernalization requirements for flowering

Factors affecting selective weedy rye (Secale sp.) control in winter wheat with the herbicide ethiazin

Germination and growth characteristics of five accessions of jointed goatgrass (Aegilops cylindrica)

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