Competition, Morphology and Canopy Structure in Wheat (Triticum aestivum L.) and Wild Oat (Avena fatua L.) Exposed to Enhanced Ultraviolet-B Radiation

1988 ◽  
Vol 2 (3) ◽  
pp. 319 ◽  
Author(s):  
P. W. Barnes ◽  
P. W. Jordan ◽  
W. G. Gold ◽  
S. D. Flint ◽  
M. M. Caldwell
Keyword(s):  
Triticum Aestivum ◽  
Canopy Structure ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Ultraviolet B ◽  
Wild Oat ◽  
Ultraviolet B Radiation

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.

Effect of BASF 13.338 on resistance of photosynthetic apparatus of Triticum aestivum L. to ultraviolet-B radiation

1997 ◽  
Vol 151 (6) ◽  
pp. 660-667 ◽  
Author(s):  
N. Nedunchezhian ◽  
R. Santhanam ◽  
G.M. Giacometti ◽  
V.V. Klimov ◽  
G. Kulandaivelu
Keyword(s):  
Triticum Aestivum ◽  
Photosynthetic Apparatus ◽  
Triticum Aestivum L ◽  
Ultraviolet B ◽  
Ultraviolet B Radiation

Selecting for triallate resistance in wild oat

2000 ◽  
Vol 80 (3) ◽  
pp. 665-667 ◽  
Author(s):  
Hugh J. Beckie ◽  
Sakti Jana
Keyword(s):  
Triticum Aestivum ◽  
Key Words ◽  
Herbicide Resistance ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Wild Oat

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

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

Ultrastructural effects and translocation of methyl-2-(4-(2,4-dichlorophenoxy)-phenoxy)propanoate in wheat (Triticum aestivum) and wild oat (Avena fatua)

1976 ◽  
Vol 54 (17) ◽  
pp. 2038-2048 ◽  
Author(s):  
A. G. Brezeanu ◽  
D. G. Davis ◽  
R. H. Shimabukuro
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Avena Fatua ◽  
Apical Region ◽  
Wild Oat ◽  
Visible Injury ◽  
Complete Destruction ◽  
Ultrastructural Modifications ◽  
Wheat Leaves ◽  
Cellular Alterations

Ultrastructural effects, absorption, and translocation of the experimental compound methyl-2-(4-(2,4-dichlorophenoxy)phenoxy)propanoate (MPP), topically applied to resistant wheat (Triticum aestivum L.) and susceptible wild oat (Avena fatua L.), were studied.The two species were affected differently by MPP when greenhouse-grown seedlings were treated at the [Formula: see text]-leaf stage. The second leaf of both species was damaged, but wild oat leaves were affected much more than wheat leaves. Although tissues formed after treatment and the apical region of the second leaf of wheat did not appear to be injured, ultrastructural modifications occurred. In wild oat, both visible injury and ultrastructural modifications were seen. Chloroplasts were the organelles most affected by the compound in both species. Cellular alterations ranging from slight to complete destruction of the cytoplasm were observed in cells of treated leaves. Frequently cells with undamaged chloroplasts were located next to cells with damaged chloroplasts. The translocation patterns of [14C]MPP applied as a drop were similar in wheat and wild oat and could not account for the differences in their sensitivities. About 95% of the 14C was recovered in the region of application in both species.

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