Dicamba Uptake, Translocation, Metabolism, and Selectivity

Chang, F. Y.; Born, W. H. Vanden

doi:10.1017/s0043174500048414

Cited by 62 publications

(43 citation statements)

References 4 publications

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“…(b)]. Dicamba is a systematic herbicide and must be translocated to the meristems to obtain satisfactory weed control. Therefore, the lack of kochia control with dicamba treatment at high temperature (i.e.…”

Section: Discussionmentioning

confidence: 99%

Reduced absorption of glyphosate and decreased translocation of dicamba contribute to poor control of kochia (Kochia scoparia) at high temperature

Stahlman

Jugulam

2016

Pest Management Science

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Reduced efficacy of dicamba or glyphosate to control kochia under elevated temperatures can be attributed to decreased absorption and translocation of glyphosate and dicamba, respectively. Therefore, it is recommended to apply glyphosate or dicamba when the temperature is low (e.g. d/n temperature at 25/15°C) and seedlings are small (less than 12 cm) to maximize kochia control. © 2016 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

Reduced absorption of glyphosate and decreased translocation of dicamba contribute to poor control of kochia (Kochia scoparia) at high temperature

Stahlman

Jugulam

2016

Pest Management Science

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“…Chang and Vanden Born [6] provided evidence that dicamba is metabolized very rapidly by wheat plants. Approximately 47% was metabolized to dicamba derivatives within 24h of application, while only 9% was metabolized during the same time by barley plants.…”

Section: Discussionmentioning

confidence: 99%

Induction of embryogenicTriticum aestivum L. calli. II. Quantification of organic addenda and other culture variable effects

Carman

Jefferson

Campbell

1988

Plant Cell Tiss Organ Cult

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Nine experiments were conducted to determine effects of various culture medium addenda on induction of embryogenic calli from immature embryos of a responsive Triticum aestivum L. genotype (PCYT 10). Effects were quantified by counting somatic embryos (embryoids) per callus. Optimal auxin concentrations to induce and maintain somatic embryogenesis were 3.62 #M 2,4-dichlorophenoxyacetic acid (2,4-D) or 9.05/aM 3,6-dichloro-oanisic acid (dicamba). In general, dicamba permitted formation of significantly more embryoids than 2,4-D. Kinetin (6-furfurylaminopurine) at 2.56 #M or 4.65 #M significantly increased percentage scutellar callus when added to 2,4-D or dicamba-containing medium, respectively. Kinetin at 4.65/aM significantly increased the numbers of embryoids formed when added to medium containing either synthetic auxin. Significantly fewer embryoids formed when cultures were incubated under diffuse light (16-h photoperiod). Casein hydrolysate (200 mg 1 -t) or L-arginine (0.23 mM) had no effect on numbers of embryoids formed, whereas L-tryptophan (0.20raM) enhanced such formation with 2,4-D and decreased such formation with dicamba. Two additional experiments generally demonstrated that response to auxin source in the genotypes ND 7532, PCYT 20, Yaqui 50, and Oasis was similar to that in PCYT 10. The higher molar concentration of dicamba required to induce embryogenic callus coupled with more evident embryoid precocious germination and a more rapid rate of tissue necrosis upon extended incubation without subculture suggests that dicamba is metabolized more rapidly than 2,4-D in T. aestivum callus cultures.

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“…There was no diff erence among the four weed control treatments with AC Baton and VAO-2. Tolerant plants detoxifi ed dicamba herbicide more rapidly than susceptible plants (Chang and Vanden Born, 1971). For genotypes 05ANS01, Shadow, Hi Prot, and Navaro, the herbicide bromoxynil/MCPA gave the same proportion of covered grains as dicamba/MCPA.…”

Section: Discussionmentioning

confidence: 96%

Covered Grains in Naked Oat: Environment and Herbicide Effects

et al. 2010

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Naked oat (Avena sativa L.) grown in Québec, Canada, produces an average of 10% covered grains. The objectives of this study were to evaluate the effects of environment, herbicide, and genotype on the proportion of covered grains, to study the relation between the presence of awns and the proportion of covered grains, and to determine the location of covered grains on the plant (tiller) and on the panicle. Eight oat lines were evaluated over 2 yr at four experimental sites. Each line was treated with bromoxynil/MCPA, dicamba/MCPA, or thifensulfuron methyl/tribenuron methyl applied at Zadoks 12–13 and compared to a hand‐weeded check. The highest percentages of covered grains, 5.5 and 6.9%, were found at different sites in 2006 and 2007. The application of dicamba/MCPA increased the percentage of covered grains in the lines normally producing a higher proportion of covered grains, but low producing lines were less affected. Minor differences were found among the other weed control treatments. No relation was found between the presence of awns and the proportion of naked grains. Covered grains were mostly produced on the main stem and their position on the panicle depended on genotype and weed control treatment.

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Dicamba Uptake, Translocation, Metabolism, and Selectivity

Cited by 62 publications

References 4 publications

Reduced absorption of glyphosate and decreased translocation of dicamba contribute to poor control of kochia (Kochia scoparia) at high temperature

Reduced absorption of glyphosate and decreased translocation of dicamba contribute to poor control of kochia (Kochia scoparia) at high temperature

Induction of embryogenicTriticum aestivum L. calli. II. Quantification of organic addenda and other culture variable effects

Covered Grains in Naked Oat: Environment and Herbicide Effects

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