Results 141 to 150 of about 3,049 (176)

An assessment of environmental conditions for control of downy brome by Pseudomonas fluorescens D7

International Journal of Environmental Technology and Management, 2010
Purpose: We evaluated the conditions that favoured Pseudomonas fluorescens strain D7 (P.f. D7) growth and inhibition of downy brome. Design/methodology/approach: Tn5 mutagenesis and a competitive assay were used to isolate mutants of P.f. D7. Isolates were screened for polysaccharide production and toxin response.
Abasiofiok Ibekwe
exaly   +2 more sources

Effect of the Bioherbicide Pseudomonas fluorescens D7 on Downy Brome (Bromus tectorum)

Rangeland Ecology and Management, 2020
Downy brome (Bromus tectorum) is one of the most problematic invasive plant species in the United States. Downy brome invasions are associated with reductions in diversity and an increase in fire intensity. Bioherbicides that are reported to effectively control downy brome have been developed.
exaly   +2 more sources

Differential Competitive Ability of Winter Wheat Cultivars against Downy Brome

Agronomy Journal, 1994
AbstractDowny brome (Bromus tectorum L.) causes large yield reductions in winter wheat (Triticum aestivum L.) in the western USA and Canada. Current control practices using fallow and preseeding tillage often are ineffective. A study was conducted over 3 yr at Lethbridge, AB, to determine if winter wheat cultivars varying in height and growth habit ...
exaly   +2 more sources

Effects of fertilizer and stubble burning on downy brome competition in winter wheat

Communications in Soil Science and Plant Analysis, 1995
Abstract Increased downy brome (Bromus tectorum) infestation is one of the dominant impediments to adoption of conservation tillage. Surface residues often increase grassy weed competition and lower the yield of cereal crops. Crop residue and fertilizer placement effects on downy brome growth and nutrient uptake in relation to that of winter wheat ...
exaly   +2 more sources

Selective Control of Downy Brome in Alfalfa

Weed Science, 1975
Selective control of downy brome (Bromus tectorumL.) in alfalfa (Medicago sativaL.) was studied in 1971 and 1972. Herbicidal efficacy and alfalfa tolerance, yield, and percent and total protein were observed. The weed population was composed of almost 100% downy brome in 1971 and 1972.
George Kapusta, C. F. Strieker
openaire   +1 more source

A comparison of the freezing tolerance of downy brome, Japanese brome and Norstar winter wheat

Canadian Journal of Plant Science, 1991
The freezing tolerance of downy (Bromus tectorum L.) and Japanese (Bromus japonicus) brome were compared to Norstar winter wheat (Triticum aestivum L.) collected from similar sites. From December to April of 1987 downy brome was either equal to or superior in freezing tolerance to the winter wheat.
B. J. O'Connor, L. V. Gusta, S. P. Paquette   +2 more
openaire   +1 more source

Herbicide Localization in Downy Brome (Bromus tectorum) Spikelets

Journal of Plant Physiology, 1989
Summary Microautoradiographic techniques were utilized to localize quizalofop (ethyl-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoate) and fluazifop [butyl-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy] phenoxy] propanoate) in downy brome ( Bromus tectorum L. # 1 BROTE) spikelets.
Jesse M. Richardson, Vincent R. Franceschi, David R. Gealy, Larry A. Morrow   +3 more
openaire   +1 more source

Wheatgrass Establishment with Paraquat and Tillage on Downy Brome Ranges

Weeds, 1967
Methods of weed control and seeding of perennial grasses on rangelands infested with downy brome (Bromnus tectorum L.) in Nevada and northeastern California were compared for 4 years. In this sttidy, 1, 1'-dimethyl-4,4'-bipyridinium salt (paraquat) at 0.5 lb/A and higher gave adequate and consistent control of downy brome for establishment of perennial
Raymond A. Evans, Richard E. Eckert, Burgess L. Kay   +2 more
openaire   +1 more source

Ecology and ecological genetics of seed dormancy in downy brome

Weed Science, 2002
Abstract Downy brome, an obligately selfing winter annual, has invaded a variety of habitats in western North America. Seeds are at least conditionally dormant at dispersal in early summer and lose dormancy through dry after-ripening. In the field, patterns of germination response at dispersal vary among populations and across years within populations.
Phil S. Allen, Susan E. Meyer
openaire   +1 more source

Resistance to chlortoluron in a downy brome (Bromus tectorum) biotype

Weed Science, 2006
A downy brome population in a winter wheat field at Córdoba, Spain, survived use rates of chlortoluron (2.5 to 3.5 kg ai ha−1) over 2 consecutive yr, where wheat monoculture and multiple annual chlortoluron applications had been carried out. The resistant (CR) biotype showed a higher ED50value (7.4 kg ai ha−1; the concentration required for 50 ...
Julio Menendez, Fernando Bastida, Rafael de Prado   +2 more
openaire   +1 more source