Index Catalog // ScholarsArchive@OSU

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

Creator:: Colbert, Floyd Oral
Resource Type:: Dissertation
Full Text:: , terbutryn, and GS-14254. Duplicate 5 g 7 air-dried samples of 10 natural soils and three lime-amended

The reproduction and mode of spread of sago pondweed (Potamogeton pectinatus L.) in irrigation system

Creator:: Ogg, Alex G.
Abstract:: Nine experiments were conducted during 1964 and 1965 to study the methods of reproduction and mode of spread of sago pondweed (Potamogeton pectinatus) in irrigation systems. Frequent treatments of sago pondweed foliage with aromatic solvent greatly reduced the number of tubers in the substratum of an irrigation canal. However, complete...
Resource Type:: Masters Thesis
Full Text:: 16 Stems and Leaves 17 Roots 18 Aerating System 19 STUDIES ON THE REDUCTION OF SAGO PONDWEED

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

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

Creator:: Paller, Enrique C.
Abstract:: Greenhouse and growth chamber experiments were conducted with the following objectives: (a) to study the effects of N-1-naphthylphthalamic acid (naptalam) on shoot and tuber production, rhizome transformation, and growth of yellow nutsedge (Cyperus esculentus L.) plants; (b) to study the effects of N-phosphonomethyl glycine (glyphosate) on nutsedge plants at different...
Resource Type:: Dissertation
Full Text:: this thesis; to Dr. William W. Chilcote and Dr. Ken G. Naffziger for serving on my graduate committee

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:: at 112 g a.i./ha. Wettable powder, flowable, and dispersible granule formulations of both Sencor

Factors affecting selective control of wild oat and downy brome in wheat by trifluralin

Creator:: Aldridge, Jack Clifton
Abstract:: Trifluralin (a, a, a - trifluoro -2, 6 -dinitro-N, N-dipropyl-ptoluidine) is effective in controlling downy brome (Bromus tectorum L.) and wild oat (Avena fatua L.) but does not severely affect the growth of wheat (Triticum aestivum L.). Studies were conducted using germination chamber and greenhouse facilities to investigate possible factors...
Resource Type:: Masters Thesis
Full Text:: in preparation of this manuscript. To Drs. W. Orvid Lee and K. G. Swenson for their review of this

Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

Creator:: McAuliffe, David
Abstract:: Applications of ethofumesate in Oregon have been observed from previous research and from commercial use to be less effective when applied to dry soils, even if subsequent precipitation occurred within a few days. Two field studies were established in the summer of 1979 using sweet corn (Zea mays L. 'Jubilee')...
Resource Type:: Masters Thesis
Full Text:: (50 g, air-dried equivalent) at 2 and 20% soil moisture were treated with 484 pg of ethofumesate. The

The effect of soil factors on glyphosate availability in soil

Creator:: Kawate, Michael Ken
Abstract:: Glyphosate (N-(phosphonomethyl)glycine) is an effective foliar-applied herbicide with broad-spectrum activity. Greenhouse and laboratory experiments were conducted to determine the importance of soil moisture, autoclaved soil, soil type, sphagnum peat, soil pH, added phosphorus, and plant residues on crop establishment and growth when glyphosate was applied before emergence of the crop....
Resource Type:: Dissertation
Full Text:: glyphosate spray (17, 24, 25). However, soil activity of glyphosate at normal use rates has been reported

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Creator:: Thill, Donald Cecil, 1950-
Abstract:: The influence of certain environmental and edaphic factors on the germination and emergence of downy brome (Bromus tectorum L.) was investigated in the laboratory. A preliminary study was conducted to determine the osmotic stability of mannitol and polyethylene glycol 20,000 (PEG) solutions, which are commonly used to simulate water stress...
Resource Type:: Dissertation
Full Text:: C. The interactive effects of soil bulk density, ranging from 0.9 to 1.3 g cm-3 , and soil matric

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:: supplemental pesticides included, in addition to dinoseb, a) preplant fumigation with 50 g/m 2 methyl

ScholarsArchive@OSU

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

The reproduction and mode of spread of sago pondweed (Potamogeton pectinatus L.) in irrigation system

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

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

Factors influencing metribuzin use in strip-planted wheat

Factors affecting selective control of wild oat and downy brome in wheat by trifluralin

Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

The effect of soil factors on glyphosate availability in soil

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Non-herbicidal effects of dinoseb on winter wheat yields

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