INFLUENCE OF FALL AND SPRING HERBICIDE APPLICATION ON WINTER WHEAT (Triticum aestivum L. ’NORSTAR’)

1989 ◽  
Vol 69 (3) ◽  
pp. 881-888 ◽  
Author(s):  
D. A. DERKSEN ◽  
K. J. KIRKLAND ◽  
B. R. McLENNAN ◽  
J. H. HUNTER ◽  
H. A. LOEPPKY ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Field Research ◽  
Triticum Aestivum L ◽  
Early Spring ◽  
Herbicide Application ◽  
Current Increase ◽  
Wheat Production ◽  
Fall Application

Recommendations regarding the timing of herbicide application in winter wheat vary among production areas. The current increase in area of winter wheat production in Saskatchewan warrants an examination of herbicide recommendations for this non-traditional production area. Field research was conducted for 2 yr at several locations in Saskatchewan using 2,4-D, MCPA, dicamba, bromoxynil, chlorsulfuron, and clopyralid, applied in the late fall or early spring, to determine the effects of time and rate of application on winter wheat grain yield. Winter wheat (Triticum aestivum L. ’Norstar’) was tolerant to fall application of all herbicides at rates recommended for spring application. Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall. Spring application of clopyralid resulted in significantly lower grain yield than fall application. All herbicides tested show potential for use in winter wheat production, although caution is warranted for spring application of clopyralid.Key words: Wheat (winter), 2,4-D, MCPA, dicamba, bromoxynil, chlorsulfuron

RELATIONSHIPS AMONG TILLERING, SPIKE NUMBER AND GRAIN YIELD IN WINTER WHEAT (Triticum aestivum L.) IN ONTARIO

1988 ◽  
Vol 68 (3) ◽  
pp. 583-596 ◽  
Author(s):  
P. BULMAN ◽  
L. A. HUNT
Keyword(s):  
Triticum Aestivum ◽  
Gibberellic Acid ◽  
Winter Wheat ◽  
Grain Yield ◽  
Field Experiments ◽  
Unit Area ◽  
Triticum Aestivum L ◽  
Early Spring ◽  
Tiller Number ◽  
Spike Number

Two field experiments were conducted to examine the relationships between tillering, spike number and grain yield in three winter wheat (Triticum aestivum L.) cultivars. Treatments were designed to manipulate both the production and survival of tillers, and to provide a high number of spikes per unit area. One experiment involved growth regulator treatments with cycocel and gibberellic acid while the second involved various rates of nitrogen. Grain yield was linearly related to total spike number over a range of 400–1200 spikes m−2 in a combined analysis over locations and years. When only spikes with at least nine fertile spikelets were included, a greater amount of the variability in yield could be explained, and differences among cultivars were related to the number of small, unproductive spikes. When locations and years were analyzed separately, little evidence was found for a diminishing response between grain yield and total spike number. Spike number was related to maximum tiller number in 1982, when winterkill and early spring conditions were unfavorable. Thus, although good fall tillering and winter survival contribute most to producing high spike numbers and grain yield, cultivars must also have the ability both to tiller rapidly in the spring and to sustain high-yielding tillers to provide sufficient compensation following winterkill.Key words: tillering, spikes, yield, wheat, nitrogen, regulators

Cytokinins and abscisic acid in hardening winter wheat

1990 ◽  
Vol 68 (7) ◽  
pp. 1597-1601 ◽  
Author(s):  
John S. Taylor ◽  
Munjeet K. Bhalla ◽  
J. Mason Robertson ◽  
Lu J. Piening
Keyword(s):  
Triticum Aestivum ◽  
Abscisic Acid ◽  
Winter Wheat ◽  
Leaf Tissue ◽  
Triticum Aestivum L ◽  
Early Spring ◽  
Growth Chamber ◽  
Late Winter ◽  
Sequence Of Events ◽  
Freeze Dried

During overwintering in a northern climate, winter wheat goes through a hardening process, followed by dehardening in late winter – early spring. This sequence of events may be partially controlled by changes in endogenous hormone levels. Crowns and leaf tissue from field grown winter wheat (Triticum aestivum L. cv. Norstar) seeded at the beginning of September were collected and freeze-dried at monthly intervals during the winters of 1985–1986 and 1986–1987. Material was also sampled and freeze-dried from seedlings grown in a growth chamber under hardening conditions (21 °C for 2 weeks plus 3 °C for 6 weeks) or nonhardening conditions (3 weeks at 21 °C). The tissues were analysed for cytokinins and abscisic acid. Cytokinin levels, measured with the soybean hypocotyl section assay, declined from October onwards and then rose to a peak in late winter (January and February, winter 1986–1987; February and March, winter 1985–1986), subsequently declining again. Abscisic acid, quantitated as the methyl ester by gas chromatography with an electron capture detector, increased in level from October to December, then decreased to a relatively low level between January and March. Hardened seedlings from the growth chamber contained significantly higher abscisic acid levels and significantly lower cytokinin levels than did the nonhardened seedlings. Key words: abscisic acid, cytokinins, hardening, Triticum aestivum, winter wheat.

Influence of Applied Cattle Manure on Winter Wheat (Triticum aestivum L.) Grain Yield, Soil pH and Soil Organic Carbon

2019 ◽  
Vol 50 (16) ◽  
pp. 2056-2064 ◽  
Author(s):  
Lawrence Aula ◽  
Peter Omara ◽  
Jagmandeep S. Dhillon ◽  
Alimamy Fornah ◽  
William R. Raun
Keyword(s):  
Triticum Aestivum ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Winter Wheat ◽  
Grain Yield ◽  
Soil Ph ◽  
Triticum Aestivum L ◽  
Cattle Manure

scholarly journals UGRC Ring, soft red winter wheat

2015 ◽  
Vol 95 (5) ◽  
pp. 1033-1035
Author(s):  
Lily Tamburic-Ilincic ◽  
Arend Smid
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Winter Wheat ◽  
Grain Yield ◽  
Triticum Aestivum L ◽  
Falling Number ◽  
Soft Red Winter Wheat ◽  
Flour Yield ◽  
Moderately Resistant ◽  
Red Winter Wheat

Tamburic-Ilincic, L. and Smid, A. 2015. UGRC Ring, soft red winter wheat. Can. J. Plant Sci. 95: 1033–1035. UGRC Ring is a soft red winter wheat (Triticum aestivum L.) cultivar registered for Ontario, Canada. It has high grain yield, with good pastry quality (high flour yield, high falling number) and is moderately resistant to powdery mildew. UGRC Ring has good winter hardiness and is well adapted for the winter wheat growing areas of Ontario.

GENOTYPIC VARIATION IN SOME PHYSIOLOGICAL TRAITS IN WINTER WHEAT GROWN IN THE HUMID CONTINENTAL CLIMATE OF ONTARIO

1984 ◽  
Vol 64 (1) ◽  
pp. 113-118 ◽  
Author(s):  
I. AGUILAR-M. ◽  
L. A. HUNT
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Morphological Traits ◽  
Flag Leaf ◽  
Genotypic Variation ◽  
Triticum Aestivum L ◽  
Eastern Canada ◽  
Area Index ◽  
Diffusive Resistance

Several experiments were conducted with winter wheat (Triticum aestivum L. em. Thell.) during 1978 and 1979 to characterize genotypic variation in some physiological and morphological traits, and to evaluate the magnitude of the relationships between grain yield and the various traits studied. Straw weights of cultivars grown in Eastern Canada were similar to, and harvest indices generally lower than, those reported for high yielding varieties from other countries. Highest grain weights were also lower than the upper values recorded for some cultivars in the U.K. and Mexico, and were little affected by spikelet removal in most cases. All experiments were consistent in showing highly significant correlations between grain yield and grains per square metre, straw weight, harvest index, spikes per square metre, and flag leaf area index, and significant correlations between grain yield and grain weight. Diffusive resistance of the adaxial surface of the flag leaves differed between genotypes, but correlations between diffusive resistance and yield were low and nonsignificant in all cases, with the exception of the preanthesis period in one experiment.Key words: Wheat (winter), Triticum aestivum L. em. Thell., yield, physiological-morphological traits.

CDC Clair winter wheat

1997 ◽  
Vol 77 (4) ◽  
pp. 669-671 ◽  
Author(s):  
D. B. Fowler
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Protein Concentration ◽  
Grain Quality ◽  
Triticum Aestivum L ◽  
Western Canada ◽  
Agronomic Performance ◽  
Cultivar Description ◽  
Red Winter Wheat

CDC Clair is a high-yielding, strong-strawed, semidwarf winter wheat (Triticum aestivum L.) with good winterhardiness. When grown in western Canada, it has the high grain yield and agronomic performance of CDC Kestrel, but improved grain quality. The grain protein concentration of CDC Clair has been higher than that of CDC Kestrel and similar to Norstar. CDC Clair is eligible for grades of the Canada Western Red Winter Wheat class. Key words: Triticum aestivum L., cultivar description, wheat (winter)

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