CONTROL OF WILD OATS IN WHEAT WITH BARBAN, DICLOFOP METHYL, FLAMPROP METHYL AND DIFENZOQUAT

1984 ◽  
Vol 64 (4) ◽  
pp. 1019-1021 ◽  
Author(s):  
K. J. KIRKLAND ◽  
P. A. O’SULLIVAN
Keyword(s):  
Triticum Aestivum ◽  
Wheat Yield ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Growth Stages ◽  
Wild Oat ◽  
Wild Oats

The efficacy of diclofop methyl, flamprop methyl, difenzoquat, and barban on wild oats (Avena fatua L.) in wheat (Triticum aestivum L.) was tested in the field at Scott and Lacombe from 1978 to 1982. The four herbicides were applied at recommended rates and growth stages. Diclofop methyl consistently caused the greatest reduction in wild oat culms and plant weights and resulted in the largest wheat yield increases. Diclofop methyl, flamprop methyl and difenzoquat consistently produced yield increases over the untreated control.Key words: Wild oats, wheat, barban, diclofop methyl, flamprop methyl, difenzoquat

Herbicides for Winter-hardy Wild Oat (Avena fatua) Control in Winter Wheat (Triticum aestivum)

1997 ◽  
Vol 11 (1) ◽  
pp. 35-38 ◽  
Author(s):  
Jeffrey A. Koscelny ◽  
Thomas F. Peeper
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Wheat Yield ◽  
Avena Fatua ◽  
Growth Stages ◽  
Wild Oat ◽  
Wheat Grain ◽  
Grain Yields

Diclofop at 840 g ai/ha, fenoxaprop at 90 g ai/ha, and imazamethabenz at 530 g ai/ha fall-applied controlled wild oat 96, 99, and 95% and increased wheat grain yields 26, 29, and 24%, respectively. These herbicides controlled wild oat over a wider range of growth stages than current labels indicate. The same treatments applied in March were less effective for wild oat control and did not increase wheat yield.

CONTROL OF WILD OAT WITH TRIALLATE IN A SPRING WHEAT CONSERVATION TILLAGE SYSTEM

1986 ◽  
Vol 66 (1) ◽  
pp. 181-184 ◽  
Author(s):  
S. J. CARLSON ◽  
L. A. MORROW
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Conservation Tillage ◽  
Wheat Yield ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Wild Oat ◽  
Minimum Tillage ◽  
Tillage System

Triallate granules were applied at 2.8 kg/ha without incorporation either immediately before or after planting into standing spring wheat (Triticum aestivum L. ’Fielder’ and ’Dirkwin’) stubble. The triallate granules controlled wild oat (Avena fatua L.), and resulted in increased spring wheat yield. Difenzoquat or diclofop-methyl application also increased wheat yields.Key words: Triallate, oat (wild), conservation tillage, minimum tillage, wheat (spring)

EFFECTS OF POST-EMERGENCE WILD OAT HERBICIDES ON THE TRANSPIRATION OF WILD OATS

1977 ◽  
Vol 57 (1) ◽  
pp. 127-132 ◽  
Author(s):  
M. P. SHARMA ◽  
W. H. VANDEN BORN ◽  
D. K. McBEATH
Keyword(s):  
Triticum Aestivum ◽  
Acid Methyl Ester ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Wild Oat ◽  
Hordeum Vulgare L ◽  
Wild Oats ◽  
Acid Methyl ◽  
Foliar Treatment

Transpiration of wild oat (Avena fatua L.) plants was markedly reduced after foliar treatment with barban (4-chloro-2-butynyl-m-chlorocarbanilate), asulam (methyl sulfanylcarbamate), dichlorfop methyl (4-(2′,4′-dichlorophenoxy)-phenoxypropionic acid methyl ester), difenzoquat (1,2-dimethyl-3,5-diphenyl-1 H-pyrazolium) or benzoylprop ethyl (ethyl-N-benzoyl-N(3,4-dichlorophenyl)-2-aminopropionate). Suppression of transpiration increased with increasing herbicide rates. Difenzoquat and dichlorfop methyl at 1.12 kg/ha reduced transpiration by more than 50% within 2 days after spraying. Barban, asulam and benzoylprop ethyl did not reduce transpiration to this level until about 12 days after spraying. When wild oats and barley (Hordeum vulgare L.) or wheat (Triticum aestivum L.) were grown together, removal of the weed with these herbicides resulted in significantly heavier barley and wheat plants with more tillers per plant than in the untreated control. The earlier removal of wild oat competition with dichlorfop methyl and difenzoquat treatments resulted in the production of more dry weight and culms per plant of barley and wheat than with the slower-acting barban and benzoylprop ethyl.

FIELD CONFIRMATION OF AN INDEX FOR PREDICTING YIELD LOSS OF WHEAT AND BARLEY DUE TO WILD OAT COMPETITION

1979 ◽  
Vol 59 (1) ◽  
pp. 243-244 ◽  
Author(s):  
W. M. HAMMAN
Keyword(s):  
Triticum Aestivum ◽  
Yield Loss ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Western Canada ◽  
Wild Oat ◽  
Field Scale ◽  
Hordeum Vulgare L ◽  
Wild Oats ◽  
Actual Yield

Indices of competition of 0.0339 for wild oats (Avena fatua L.) in wheat (Triticum aestivum L. emend Thel.) and 0.0230 for wild oats in barley (Hordeum vulgare L.) as developed by Dew (1972) were confirmed. Actual yield loss determinations were made by utilizing data collected from herbicide-treated (considered wild oat-free) and non-treated areas on field-scale trials scattered across Western Canada.

Barban Selectivity for Wild Oat in Wheat

Weed Science ◽  
1974 ◽  
Vol 22 (5) ◽  
pp. 476-480 ◽  
Author(s):  
Robert W. Neidermyer ◽  
John D. Nalewaja
Keyword(s):  
Triticum Aestivum ◽  
Air Temperature ◽  
Leaf Blade ◽  
Plant Morphology ◽  
Treatment Temperature ◽  
Avena Fatua ◽  
Post Treatment ◽  
Wild Oat ◽  
Wheat Growth ◽  
Wild Oats

The response of wheat (Triticum aestivum L.) and wild oat (Avena fatua L.) to barban (4-chloro-2-butynyl-m-chlorocarbanilate) was studied as influenced by plant morphology and air temperature after application. Growth of wheat and wild oat seedlings was reduced by barban at 0.3 μg and 0.6 μg applied to the first node, respectively. Barban application to the base and midpoint of the first leaf blade required a lower dose to reduce wild oat growth than wheat growth. Increased tillering occurred from barban injury to the main culm in wheat. Wheat and wild oat susceptibility to barban increased as the post-treatment temperature decreased from 32 to 10 C. Barban selectivity for wild oats in wheat was greater at 27 and 21 C than at 16 and 10 C.

Efficacy of Fall Incorporated and Non-incorporated Granular Triallate on Wild Oat (Avena fatua) and Wheat (Triticum aestivum)

1994 ◽  
Vol 8 (3) ◽  
pp. 607-611 ◽  
Author(s):  
Kenneth J. Kirkland
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Wheat Yield ◽  
Subsequent Development ◽  
Avena Fatua ◽  
Wild Oat ◽  
Fresh Weight ◽  
West Central ◽  
Wheat Stubble ◽  
Incorporation Method

The influence of incorporation vs no incorporation on the efficacy of granular triallate applied in mid-October at 1400 and 1700 g ai/ha to control wild oat was evaluated in spring wheat in west central Saskatchewan over a 7-yr period. All fall-applied triallate reduced wild oat panicles and fresh weight, and increased yield compared to untreated checks. With applications in standing wheat stubble there was no difference in wild oat control from incorporation versus no incorporation. All triallate treatments reduced wild oat panicles and fresh weight by over 95%, and resulted in wheat yield increases ranging from 29 to 67%. In tilled fallow, incorporated granules provided better wild oat control than when there was no incorporation. Wheat yield increases ranged from 50 to 85% for triallate treatments with yield for incorporated triallate approximately 15% greater than non-incorporated. The rate of triallate did not affect the level of wild oat control achieved with either incorporation method. In separate tolerance studies triallate incorporation method did not affect spring wheat emergence or subsequent development.

Spring Wheat (Triticum aestivum) Growth and Yield as Influenced by Duration of Wild Oat (Avena fatua) Competition

1993 ◽  
Vol 7 (4) ◽  
pp. 890-893 ◽  
Author(s):  
Kenneth J. Kirkland
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Wheat Yield ◽  
Avena Fatua ◽  
Growth And Yield ◽  
Wild Oat ◽  
Fresh Weight ◽  
Leaf Stage ◽  
Removal Experiments

The effect of duration of wild oat competition on spring wheat yield and growth was determined in time-of-removal experiments conducted over a three year study period in Saskatchewan, Canada. Failure to remove wild oat reduced wheat yield 28 and 39% at wild oat populations of 64 and 188 plants per m2, respectively. Wheat yield was not reduced by wild oat densities of 64 or 118 plants per m2until the six- and seven-leaf stage of wild oat, respectively. Removing wild oat at 64 plants per m2before the seven-leaf stage and 118 plants per m2before the five-leaf stage did not increase wheat culm or fresh weight production.

Benzoylprop Ethyl and Its Analogue for the Control of Wild Oat in Wheat

Weed Science ◽  
1976 ◽  
Vol 24 (3) ◽  
pp. 316-318 ◽  
Author(s):  
K. J. Kirkland ◽  
R. Ashford
Keyword(s):  
Triticum Aestivum ◽  
Avena Fatua ◽  
Growth Stages ◽  
Wild Oat ◽  
Complete Control ◽  
Crop Tolerance ◽  
Significant Yield

Benzoylprop ethyl [Ethyl N-benzoyl-N (3,4-dichlorophenyl)-2-amino-propionate] and WL 29761 [methyl-N-benzoyl-N-(3-chloro-4-fluorophenyl)-2-amino-propionate] were applied to wild oat (Avena fatua L.) in wheat (Triticum aestivum L. ‘Manitou’) to study the yield benefits occurring and the efficacy of the compounds on wild oat. Even though removal of the wild oat was at the later growth stages, benzoylprop ethyl and WL 29761 did produce significant yield increases at both rates tested. Efficacy on wild oat ranged from mediocre to virtually complete control. Crop tolerance was satisfactory throughout the study.

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