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Absorption and translocation of glyphosate in Spermacoce verticillata and alternative herbicide control

Fadin, D A ; Tornisielo, V L ; Barroso, A A M ; Ramos, S ; Dos Reis, F C ; Monquero, P A ; Kudsk, Per Kudsk, Per

Weed research, 2018-10, Vol.58 (5), p.389-396 [Revista revisada por pares]

Oxford: Wiley Subscription Services, Inc

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Absorption and translocation of glyphosate in Spermacoce verticillata and alternative herbicide control
Autor: Fadin, D A ; Tornisielo, V L ; Barroso, A A M ; Ramos, S ; Dos Reis, F C ; Monquero, P A ; Kudsk, Per
Kudsk, Per
Materias: Absorption ; burndown ; Carbon 14 ; Data processing ; Glyphosate ; glyphosate tolerance ; Herbicides ; labelled carbon ; Leaves ; Nonlinear analysis ; Paraquat ; Plants ; Regression analysis ; shrubby false buttonweed ; Spermacoce verticillata ; Translocation ; Variance analysis
Es parte de: Weed research, 2018-10, Vol.58 (5), p.389-396
Descripción: Summary Glyphosate has been associated with control failures for Spermacoce verticillata in some Brazilian States. The objective of this work was to evaluate and determine the possible causes of this and propose alternative herbicides to use. Glyphosate was applied at three plant stages of development (2–4 leaves, 4–6 leaves and full bloom) where foliar absorption and translocation of glyphosate to various plants parts and time were analysed using the 14C technique. Data were submitted to nonlinear regressions and analysis of variance, where means were compared by a Tukey test at 5% probability. Plant control by the application of different herbicides (19) in the same three stages of development of weed was evaluated. Twenty‐one days after herbicide application, control was visually evaluated and data analysed and means were compared. Due to absorption and/or translocation problems, S. verticillata plants were not controlled by glyphosate. Plants with 4–6 leaves showed lower absorption and translocation of the herbicide to the leaf/root regions compared with plants at the beginning of their development. Plants at full bloom showed lower translocation of the herbicide to the root. In addition to the application of glyphosate at early stages of development, the application of paraquat, flumioxazin and mixtures of glyphosate with flumioxazin or cloransulam is recommended. Late applications could result in poor control, principally if glyphosate is used. Therefore, early applications are strongly recommended for control of this species.
Editor: Oxford: Wiley Subscription Services, Inc
Idioma: Inglés

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Absorption and translocation of glyphosate in Spermacoce verticillata and alternative herbicide control

Fadin, D A ; Tornisielo, V L ; Barroso, A A M ; Ramos, S ; Dos Reis, F C ; Monquero, P A ; Kudsk, Per Kudsk, Per

Oxford: Wiley Subscription Services, Inc

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