Absorption and Distribution of Diuron-C[superscript fourteen]

Bayer, D. E.; Yamaguchi, Seiichi

doi:10.2307/4041034

Cited by 27 publications

(22 citation statements)

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“…Atrazine-^'^C did not move from the points of application (Plate lid and e). This is in contrast to results reported for atrazine-^'^C (Foy, 1964) and diuron-*C (Bayer & Yamaguchi, 1965) in leaves of terrestrial plants where both herbicides moved in the transpiration stream following localized leaf applications. Assuming that uptake of atrazine-^*C was not a limiting factor, it is probable that the lack of water conduction was primarily responsible for the non-movement of this herbicide observed in Potamogeton nodosus.…”

Section: Mid-leaf and Stem Treatmentscontrasting

confidence: 99%

“…It is well established that certain chemicals, e.g. atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) monuron (N'-(4-chlorophenyl) -NNdimethylurea), simazine (Crafts & Yamaguchi, 1964) and diuron (N'-(3,4dichlorophenyl)-jVyV-dimethylurea) (Bayer & Yamaguchi, 1965) move readily in xylem tissue from roots into the aerial parts of terrestrial plants. In the present experiments atrazine-^'^C and diuron-^"^C did not move from the roots into the stem and leaves of P. nodosus plants (Plate lOe and f).…”

Section: Root Treatmentsmentioning

confidence: 99%

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TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.

Thomas

Seaman

1968

Weed Research

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Summary. Plants of Potamogeton nodosus, a submersed aquatic, were treated with the di‐sodium salt of 7‐oxabicyclo(2,2,l)heptane‐2,3‐dicarboxylic acid‐14C (endothal‐14C). Gross radioautographs showed that the 14C label moved from mature photosynthesizing leaves and accumulated in the apices and developing secondary plants. Similar results were obtained with mid‐leaf, stem (internode) and winter‐bud applications. No move‐ment of radioactivity occurred following root treatment. The results indicate symplastic translocation of endothal‐14C when applied to the leaf, stem or winter bud. It is suggested that endothal can cause the death of plants by direct injury to root tissues subsequent to absorption. Recherches sur la migration de l'endothal‐14C dans le Potamogeton nodosus Poir.

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Section: Mid-leaf and Stem Treatmentscontrasting

confidence: 99%

Section: Root Treatmentsmentioning

confidence: 99%

TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.

Thomas

Seaman

1968

Weed Research

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“…Translocation out of the treated leaflet was 11% of the amount applied after both 24 and 48 h. These data indicate that foliar activity of diuron on yellow woodsorrel is predominately contact, with minimal translocation. Bayer and Yamaguchi (1965), working with several crop species (previously listed) but not with yellow woodsorrel, reached a similar conclusion.…”

Section: Foliar Absorption and Translocation Of Diuron Bysupporting

confidence: 69%

“…Diuron absorption through the roots was followed by distribution through the treated plant via the xylem. Neither foliar nor root treatment resulted in phloem-based translocation within treated plants (Bayer and Yamaguchi 1965).…”

Section: Introductionmentioning

confidence: 99%

Diuron Sorption by Pine-Bark Substrate and Foliar vs. Root Absorption by Yellow Woodsorrel (Oxalis stricta)

et al. 2005

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Postemergence-applied diuron effectively controls yellow woodsorrel in nursery crops grown in pine bark–based container substrate. Whether the phytotoxicity of diuron on yellow woodsorrel is exclusively the result of foliar activity or is partially the result of root-based activity has not been determined. Application in which diuron was allowed to contact both the foliage and the pine bark–based substrate provided 84% control as determined by shoot fresh-weight reduction relative to that of a nontreated control. Foliar-only and root-only applications provided 52 and 12% shoot fresh-weight reduction, respectively. Absorption and translocation of foliar-applied diuron by yellow woodsorrel was evaluated using radiotracer techniques. After 24 h, 86% of the applied diuron had been absorbed, and 76% of the amount applied remained in the treated leaflet, indicating minimal translocation. Diuron sorption by the pine bark–based substrate was evaluated using radiotracer techniques. After 3 h, less than 6% of applied diuron remained in the aqueous phase, indicating 94% sorption. Exposing yellow woodsorrel roots to diuron concentrations as low as 0.50 mg/L resulted in injury, and concentrations equal to or greater than 10 mg/L resulted in death. Calculations described herein indicate the concentration that probably would occur within the aqueous solution held within the substrate following a 1.12-kg ai/ha application is sufficient to be phytotoxic to yellow woodsorrel. Thus, root-based absorption is a contributing factor in the overall efficacy of postemergence-applied diuron in controlling yellow woodsorrel.

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“…This was particularly evident at the higher rates used. Bayer & Yamaguchi (1965) and Davis et al (1959) used labelled simazine and diuron with similar results. When applied to the root zone simazine and diuron caused only slight root inhibition; this may have been an indirect result of reduced foliage.…”

Section: Resultsmentioning

confidence: 61%

Site of Uptake of Soil‐applied Herbicides*

et al. 1967

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Summary. We conducted studies to determine the effects on corn (Zea mays L, var. Indiana 654) and pea (Pisum sativum L. var. Alaska) of localizing various herbicides in the soil, using a double plastic pot technique which ensured separate exposure of the root and shoot zones of the plants to treated soil. Effects on corn and pea were similar in relation to site of uptake. 2,4‐D‐amine, naptalam, simazine, diuron and dalapon‐sodium entered primarily through the roots. Some shoot entry and also severe inhibition of roots occurred in soil treated with 2,4‐D and naptalam; these were noticed only to a slight extent with the other three herbicides. EPTC, chlorpropham and trifluraiin were most effective when applied to the shoot zone. Little effect on foliage growth was evident when the root zone alone was treated. However, roots in treated soil were severely inhibited by these three herbicides. Dinoseb displayed a contact type of action, injuring both shoots and roots. Treatment of both zones had an additive effect. Entry of chlorthal‐methyl which was tested on a susceptible species, sorghum (Sorghum vulgare Pers.) was mainly through the shoot, with only a slight effect on top growth when roots alone were treated. Roots in treated soil were slightly inhibited. Localisation de l'absorption des herbicides appliqués sur le sol

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Absorption and Distribution of Diuron-C[superscript fourteen]

Cited by 27 publications

References 0 publications

TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.

TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.

Diuron Sorption by Pine-Bark Substrate and Foliar vs. Root Absorption by Yellow Woodsorrel (Oxalis stricta)

Site of Uptake of Soil‐applied Herbicides*

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Absorption and Distribution of Diuron-C[superscript fourteen]

Cited by 27 publications

References 0 publications

TRANSLOCATION STUDIES WITH ENDOTHAL‐14C IN POTAMOGETON NODOSUS POIR.

TRANSLOCATION STUDIES WITH ENDOTHAL‐14C IN POTAMOGETON NODOSUS POIR.

Diuron Sorption by Pine-Bark Substrate and Foliar vs. Root Absorption by Yellow Woodsorrel (Oxalis stricta)

Site of Uptake of Soil‐applied Herbicides*

Contact Info

Product

Resources

About

TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.

TRANSLOCATION STUDIES WITH ENDOTHAL‐¹⁴C IN POTAMOGETON NODOSUS POIR.