Aminocyclopyrachlor Absorption and Translocation in Three Aquatic Weeds

Israel, Trevor D.; Everman, Wesley J.; Richardson, Robert J.

doi:10.1614/ws-d-14-00020.1

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, differential activity of canola to picloram and clopyralid was not due to differences in translocation, absorption, or metabolism (Hall and Vanden Born 1988). Similarly, Israel et al (2015) reported that absorption and translocation of AMCP were similar among species such as water lettuce (Pistia stratiotes L.), alligatorweed [Alternanthera philoxeroides (Mart.) Griseb.…”

mentioning

confidence: 97%

Relative activity comparison of aminocyclopyrachlor to pyridine carboxylic acid herbicides

et al. 2019

View full text Add to dashboard Cite

The pyridine carboxylic acid (PCA) herbicide family can exhibit differential activity within and among plant species, despite molecular resemblances. Aminocyclopyrachlor (AMCP), a pyrimidine carboxylic acid, is a recently discovered compound with similar use patterns to those of the PCA family; however, relative activity among PCAs and AMCP is not well understood. Therefore, the objective of this study was to quantify relative activity among aminopyralid, picloram, clopyralid, triclopyr, and AMCP in canola, squash, and okra using dose-response whole-plant bioassays. Clopyralid was less active than all other herbicides in all species and did not fit dose-response models. Aminopyralid and picloram performed similarly in squash (ED50 = 21.1 and 23.3 g ae ha−1, respectively). Aminopyralid was 3.8 times and 1.7 times more active than picloram in canola (ED50 = 60.3 and 227.7 g ha−1, respectively) and okra (ED50 = 10.3 and 17.3 g ha−1, respectively). Triclopyr (ED50 = 37.3 g ha−1) was more active than AMCP (ED50 = 112.9 g ha−1) and picloram in canola. Aminocyclopyrachlor (ED50 = 6.6 g ha−1) and triclopyr (ED50 = 7.8 g ha−1) were more active in squash than aminopyralid and picloram. In okra, AMCP (ED50 = 14.6 g ha−1) and aminopyralid (ED50 = 10.3 g ha−1) performed similarly but were more active than triclopyr (ED50 = 88.2 g ha−1). Herbicidal activity among AMCP and PCAs was vastly different despite molecular similarities that could be due to variable target-site sensitivity among species.

show abstract

mentioning

confidence: 97%

Relative activity comparison of aminocyclopyrachlor to pyridine carboxylic acid herbicides

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Griseb., Eichhornia crassipes (Mart.) Solms, Pistia stratiotes L. (Israel et al ., ), Lolium arundinaceum (Schreb.) Darbysh.…”

Section: Introductionmentioning

confidence: 99%

Absorption, translocation and metabolism of aminocyclopyrachlor in young plants of Ipomoea purpurea and Ipomoea triloba

Silva

Mendes

et al. 2018

Weed Research

View full text Add to dashboard Cite

Members of the Convolvulaceae family are known to be sensitive to aminocyclopyrachlor, although little is known about the absorption, translocation and metabolism of the herbicide in these species of weed. The aim of this study was to evaluate the absorption, translocation and metabolism of 14 C-aminocyclopyrachlor in young plants of Ipomoea purpurea and Ipomoea triloba. Assessments were performed at 3, 6, 12, 24, 48 and 72 h after treatment (HAT) for the study of absorption and translocation. Metabolism was assessed at three time points (3, 24 and 72 HAT). In terms of absorption, was observed a difference between species at the 3 and 48 HAT time points, where I. purpurea had a higher absorption of 14 C-aminocyclopyrachlor. No differences were observed between species at any other time points. Of the total absorbed herbicide, 90.9% for I. purpurea and 91.8% for I. triloba were detected on the treated leaf. I. purpurea presented higher translocation to the leaf above the treated leaf, while I. triloba showed higher translocation to the lower leaves and roots. No increase in absorption of 14 C-aminocyclopyrachlor was observed above 24 HAT for I. purpurea and above 6 HAT for I. triloba, and translocation was low (<1%) for both species in all plant parts. This suggests that post-emergence application of aminocyclopyrachlor cannot be effective for the control of I. purpurea and I. triloba and alternative approaches are required. Nevertheless, no 14 C-aminocyclopyrachlor metabolites were observed in the studied plants, which indicated sensitivity in I. purpurea and I. triloba to the herbicide.

show abstract

Aminocyclopyrachlor Absorption and Translocation in Three Aquatic Weeds

Cited by 2 publications

References 15 publications

Relative activity comparison of aminocyclopyrachlor to pyridine carboxylic acid herbicides

Relative activity comparison of aminocyclopyrachlor to pyridine carboxylic acid herbicides

Absorption, translocation and metabolism of aminocyclopyrachlor in young plants of Ipomoea purpurea and Ipomoea triloba

Contact Info

Product

Resources

About