Chlorophyll reduction in western wheatgrass (Agropyron smithii Rydb.) exposed to sulfur dioxide

1981 ◽  
Vol 15 (3) ◽  
Author(s):  
W.K. Lauenroth ◽  
J.L. Dodd
1983 ◽  
Vol 63 (3) ◽  
pp. 759-761 ◽  
Author(s):  
S. SMOLIAK ◽  
A. JOHNSTON

Walsh is the first cultivar of western wheatgrass(Agropyron smithii Rydb.) to be released in Canada. It was developed at the Agriculture Canada Research Station, Lethbridge, Alberta. The cultivar is an improved selection of the native species, which is adapted to heavy clay soils, is drought-tolerant, hardy, and creeping-rooted. The grass is noted for its tolerance to salinity and its ability to grow and yield well on spring-flooded clay sites.Key words: Western wheatgrass, Agropyron smithii, heavy clay, revegetation, creeping-rooted, spring-flood


1981 ◽  
Vol 34 (4) ◽  
pp. 282 ◽  
Author(s):  
D. G. Milchunas ◽  
W. K. Lauenroth ◽  
J. L. Dodd

2002 ◽  
Vol 82 (1) ◽  
pp. 89-92 ◽  
Author(s):  
J. R. Moyer ◽  
A. L. Boswall

Foxtail barley (Hordeum jubatum L.) is a troublesome weed in irrigated pastures. Several grass species seeded on two irrigated pastures at Lethbridge to test their ability to compete with foxtail barley. Tall fescue (Festuca arundinacea Schreb.) and creeping foxtail (Alopecurus arundinaceus Poir) reduced foxtail barley groundcover significantly compared to orchardgrass (Dactylis glomerata L.), pubescent wheatgrass (Agropyron trichophorum (Link) Richt.) and western wheatgrass (Agropyron smithii Rydb.); therefore, seeding of these grasses in areas subject to foxtail barley invasion should be encouraged. Key words: Foxtail barley, tall fescue, creeping foxtail, wet soils, salinity, weed suppression


1975 ◽  
Vol 55 (1) ◽  
pp. 101-106
Author(s):  
A. JOHNSTON ◽  
S. SMOLIAK ◽  
M. D. MacDONALD

Four hundred sixty-eight ecotypes of western wheatgrass (Agropyron smithii Rydb.) were transplanted into a nursery at Agriculture Canada Research Station, Lethbridge, Alberta. Data were obtained on: plant height, forage yield, seed yield, days to maturity, average number of spikelets per head, and average number of florets and fertile florets per spikelet and per head; and the plants were rated for six characteristics of forage production, i.e., vigor, leafiness, amount of forage, seed set, creeping habit, and winter survival. The study demonstrated the presence in western wheatgrass of adequate variability in agronomic characters to make progress possible in a breeding program.


Weed Science ◽  
1984 ◽  
Vol 32 (2) ◽  
pp. 180-184 ◽  
Author(s):  
Thomas D. Whitson ◽  
Harold P. Alley

Tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea} was evaluated on three Wyoming soil types for control of big sagebrush (Artemisia tridentata Nutt.), silver sagebrush (Artemisia cana Pursh.), and phytotoxic effects on associated vegetation. Big sagebrush was controlled with tebuthiuron at application rates of 0.6 to 1.1 kg ai/ha, whereas silver sagebrush was not completely controlled. Prairie junegrass [Koeleria pyramidata (Cam.) Beauv.], western wheatgrass (Agropyron smithii Rydb. ♯3 AGRSM), needleandthread (Stipa comata Trin. ♯ STDCO), and green needlegrass (Stipa viritdula Trin. ♯ STOVI) were not significantly reduced with tebuthiuron up to 1.1 kg ai/ha. Blue grama (Bouteloua gracilis H.B.K. ♯ BOBGR), downy brome (Bromus tectorum L. ♯ BROTE), plains pricklypear (Opuntia polyacantha Haw. ♯ OPUPO), and broom snakeweed [Gutierrezia sarothrae (Pursh.) Britt. and Rugsby, ♯ GUESA] were tolerant to tebuthiuron at rates up to 1.1 kg ai/ha.


1917 ◽  
Vol 9 (12) ◽  
pp. 1148-1148
Author(s):  
James Withrow
Keyword(s):  

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