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

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)

1994 ◽  
Vol 8 (3) ◽  
pp. 607-611 ◽  
Author(s):  
Kenneth J. Kirkland

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.


1993 ◽  
Vol 7 (4) ◽  
pp. 890-893 ◽  
Author(s):  
Kenneth J. Kirkland

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.


2000 ◽  
Vol 80 (3) ◽  
pp. 665-667 ◽  
Author(s):  
Hugh J. Beckie ◽  
Sakti Jana

Resistance in wild oat (Avena fatua L.) to triallate was monitored from 1996 to 1998 in plots of continuous spring wheat (Triticum aestivum L.) and wheat-fallow, with or without triallate applied from 1979 to 1997. Resistance in wild oat occurred after 18 yr where triallate was applied annually in continuous wheat, but not where triallate was applied 10 times in a wheat-fallow rotation over the same period. No resistance was detected in the continuous wheat or wheat-fallow plots where no herbicide was applied. Key words: Herbicide resistance, wild oat, triallate


1984 ◽  
Vol 64 (4) ◽  
pp. 1019-1021 ◽  
Author(s):  
K. J. KIRKLAND ◽  
P. A. O’SULLIVAN

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


1991 ◽  
Vol 71 (4) ◽  
pp. 1089-1092 ◽  
Author(s):  
K. J. Kirkland ◽  
J. H. Hunter

Three spring wheat (Triticum aestivum L.) genotypes (Neepawa, a hard red spring, and HY320 and HY355 both Canada Prairie Spring wheats) were subjected to four levels of wild oat density at two locations over 4 yr to assess the effects of wild oat competition on biomass production, culm formation and yield. Wheat biomass and culm production were reduced at all wild oat density levels in each of the three cultivars. There were no significant differences among cultivars. In general, yields of all cultivars were reduced as wild oat density levels increased. Actual yield reductions at comparable wild oat densities tended to be greater at Regina than at Scott. There was a significant cultivar-by-density interaction for yield with yield reductions in HY320 > HY355 > Neepawa. Key words: Triticum aestivum, wheat (spring), wild oat density, competition, plant biomass, culms


2021 ◽  
Vol 843 (1) ◽  
pp. 012038
Author(s):  
I I Seregina ◽  
I G Makarskaya ◽  
A S Tsygutkin ◽  
I V Kirichkova

Abstract To study the effect of sodium Selenite application different methods on the yield of spring wheat varieties, depending on the conditions of water supply, a series of vegetation experiments in accordance with the methodology were carried out. The object of the study is spring wheat of the Zlata variety (Triticum aestivum L.). It was found that the effect of selenium on the yield of wheat of the Zlata variety depended on the method of its application and the conditions of water supply. With optimal water supply, the positive effect of selenium on the yield of spring wheat plants was revealed with both methods of applying sodium selenite. It was found that in conditions of drought, the positive effect of selenium was obtained with both methods of using sodium selenite. The greatest efficiency of selenium is obtained in foliar processing of plants. The increase in grain weight in this variant was 1.4 times. The increase in the share of the agronomic significant part of the wheat crop yield to 36% is shown, which indicates the decrease in the negative effect of drought on the formation of spring wheat yield when using foliar processing of plants.


1997 ◽  
Vol 11 (3) ◽  
pp. 591-597 ◽  
Author(s):  
Eric Spandl ◽  
Beverly R. Durgan ◽  
Douglas W. Miller

Rates and application timings of postemergence herbicides for wild oat control in spring wheat and barley were evaluated at Crookston, MN, from 1994 to 1996. Diclofop, imazamethabenz, and fenoxaprop plus MCPA plus thifensulfuron plus tribenuron were applied to one- to three-leaf wild oat; and difenzoquat, imazamethabenz, fenoxaprop plus MCPA plus thifensulfuron plus tribenuron, and fenoxaprop plus 2,4-D plus MCPA were applied to four- to five-leaf wild oat at 1/2 ×, 3/4 ×, and 1 × rates. Wild oat response to herbicide rate and timing was similar in wheat and barley. Wild oat control with 1/2 × rates generally was less than that with 3/4 × rates, which was lower than or similar to that with 1 × rates. Wild oat biomass was often reduced less with 1/2 × rates than 1 × rates. However, reducing herbicide rates generally did not influence grain yields or net economic return. Grain yields and net economic return were generally greater in herbicide-treated plots than in the nontreated control.


2000 ◽  
Vol 80 (1) ◽  
pp. 123-127 ◽  
Author(s):  
R. M. DePauw ◽  
J. M. Clarke ◽  
R. E. Knox ◽  
M. R. Fernandez ◽  
T. N. McCaig ◽  
...  

AC Abbey, hard red spring wheat (Triticum aestivum L.), is adapted to the Canadian prairies. It is significantly shorter than any of the check cultivars and has solid stems. AC Abbey expressed higher grain yield, earlier maturity, and heavier kernels than AC Eatonia, the solidstem check cultivar. It is resistant to the wheat stem sawfly (Cephus cinctus Nort.) and to prevalent races of common bunt and has moderate resistance to leaf rust and stem rust. AC Abbey is eligible for grades of Canada Western Red Spring wheat. Key words: Triticum aestivum L., red spring wheat, yield, wheat stem sawfly, plant height, maturity


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