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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:: 59 LIST OF FIGURES Figure No. 1 Rotary strip-tiller operations (a) her- bicide-fertilizer band

The differential response of Ligustrum ovalifolium and Pyracantha spp. to simazine

Creator:: Rauch, Fredrick Donald
Resource Type:: Masters Thesis
Full Text:: ) reported no injury to L. ovalifolium from applications of simazine at 10 pounds per acre on a clay loam

An economic analysis of alternative herbicide practices

Creator:: Coulston, Lane Edward
Abstract:: There is a critical lack of economic information in the area of chemical weed control. This paper is intended to stimulate study in this area. The objective is to develop a method of economic analysis of alternative herbicide practices. The data used were taken from a Druchamp winter wheat trial...
Resource Type:: Masters Thesis
Full Text:: data in Table I, we find a yield of 59. 0 bushels per acre as that yield determined at no herbicide

Response of downy brome (Bromus tectorum) and Kentucky bluegrass (Pao pratensis) to primisulfuron

Creator:: Hendrickson, Paul E.
Abstract:: Glasshouse and growth-chamber experiments were conducted to evaluate primisulfuron phytotoxicity and the influence of adjuvants on downy brome and Kentucky bluegrass. GR₅₀ (50% growth reduction) values were 0.97 ± 0.57 and 8.07 ± 1.85 g/ha for downy brome and Kentucky bluegrass, respectively. Primisulfuron was applied to downy brome and Kentucky...
Resource Type:: Masters Thesis
Full Text:: % reduction in dry weight 1.25 no adjuvant 0 a 5 a 24 a 1.25 Sylgard 309 10 ab 0 a 15 a 1.25 R-11 26 be

Effects of three herbicides on yields of five cultivars of winter wheat (Triticum aestivum L. em Thell)

Creator:: Yahyaoui, Amor
Abstract:: With the development of new selective herbicides and the frequent change in commercial wheat cultivars, information is needed as to the possible interaction between cultivars and herbicides. The responses of five genotypically diverse wheat cultivars (Bezostaya, Daws, Maris Hobbit, Stephens and Yamhill) to diuron [3-(3,4-dichloropheny1)-1,1- dimethylurea], diclofop methyl 2-[4-(2,4-dichlorophenoxy)phenoxy] propanoate...
Resource Type:: Masters Thesis
Full Text:: that diclofop is a very selective chemical for wild oats and causes no apparent injury to wheat

Annual bluegrass (Poa annua L.) control with ethofumesate during turfgrass establishment

Creator:: Wieneche, David L.
Abstract:: Temperate climates are particularly conducive to growth of annual bluegrass which readily invades and dominates most cool-season turfgrasses. Ethofumesate (2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate) is one herbicide available which will selectively control annual bluegrass. The primary objectives of this research were to determine optimum application rates and timing of ethofumesate for control of...
Resource Type:: Masters Thesis
Full Text:: . 107 Table 17. Effect of ethofumesate on annual bluegrass emergence in a no till slicer seeded plot

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

Creator:: Majek, Bradley A.
Abstract:: In previous research in Europe, asulam (methyl sulfanilylcarbamate) was found to be a potentially useful herbicide for controlling broadleaf dock Rumex obtusifolius L. ) in permanent pastures. Asulam was also reported to have a low margin of safety when used on common pasture species. Field studies were conducted in western...
Resource Type:: Masters Thesis
Full Text:: lb/A in early spring with little or no damage to swards containing a large percentage of tolerant

The use of ammonium sulphate as a selective weed spray

Creator:: Stephens, Edmund
Resource Type:: Masters Thesis
Full Text:: , a=onium sulphate onuses injury to far more plants than copper sulphate. Another investigator report

A study on the effect of 2,4-dichlorophen-oxyacetic acid on the metabolism of aspartic acid and glutamic acid in the bean plant, Phaseolus vulgaris variety Black Valentine

Creator:: Akers, Thomas Jefferson
Resource Type:: Masters Thesis
Full Text:: paper chromatography . Their relative densities were determined with a Welch Densichron No. 2150 after

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:: Effect of a pre-irrigation period on the activity of

ScholarsArchive@OSU

Factors influencing metribuzin use in strip-planted wheat

The differential response of Ligustrum ovalifolium and Pyracantha spp. to simazine

An economic analysis of alternative herbicide practices

Response of downy brome (Bromus tectorum) and Kentucky bluegrass (Pao pratensis) to primisulfuron

Effects of three herbicides on yields of five cultivars of winter wheat (Triticum aestivum L. em Thell)

Annual bluegrass (Poa annua L.) control with ethofumesate during turfgrass establishment

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

The use of ammonium sulphate as a selective weed spray

A study on the effect of 2,4-dichlorophen-oxyacetic acid on the metabolism of aspartic acid and glutamic acid in the bean plant, Phaseolus vulgaris variety Black Valentine

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

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