Selectivity and efficacy of PROTOX inhibitors in cassava varieties cultivated in clayey and sandy soils

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dc.creatorNeumárcio Vilanova da Costa
dc.creatorMário Takahashi
dc.creatorAndreia Cristina Peres Rodrigues da Costa
dc.creatorSilvio Douglas Ferreira
dc.creatorDyogo Bortot Brustolin
dc.creatorEdmar Soares de Vasconcelos
dc.date2023
dc.date.accessioned2026-07-07T03:55:09Z
dc.descriptionThe selectivity and efficacy of protoporphyrinogen oxidase (PROTOX) inhibitor herbicides in cassava varieties depend on product formulation, dosage, and soil texture. The aim of this study was to assess the selectivity and efficacy of flumioxazin and sulfentrazone in the cassava variety ‘IPR B36’ and the clone ‘VN 117’. Two experiments were carried out: one in a clayey soil and one in a sandy soil. Both experiments were laid in a split-plot randomized block design with three replicates. The two cassava varieties were used as main plots, with subplots consisting in 10 treatments including, flumioxazin at 50, 75, 100, and 125 g ha-1; sulfentrazone at 250, 500, 750, and 1000 g ha-1; one weed-free control, and one unweeded control. Flumioxazin (≥75 g ha-1) and sulfentrazone (≥250 g ha-1) achieved mean weed control rates > 70 and 90% in both types of soil for up to 90 days after application. Flumioxazin exhibited fewer residual effects on the cassava varieties than sulfentrazone, particularly in clayey soil. Flumioxazin was selective to the different cassava varieties planted in both soil types, whereas sulfentrazone was more selective in clayey soil. PROTOX inhibitors were effective in controlling weed growth in cassava plots, and there were no varietal differences in herbicide selectivity; however, the use of sulfentrazone should be restricted to maximum spray rates of 250 g ha-1 in sandy soils.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303075473023
dc.identifierhttps://www.redalyc.org/journal/3030/303075473023/
dc.identifierhttps://www.redalyc.org/journal/3030/303075473023/html/
dc.identifierhttps://www.redalyc.org/journal/3030/303075473023/303075473023.epub
dc.identifierhttps://www.redalyc.org/journal/3030/303075473023/movil
dc.identifier10.4025/actasciagron.v45i1.57135
dc.identifier.urihttp://hdl.handle.net/123456789/447371
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Vol.45
dc.subjectAgrociencias
dc.titleSelectivity and efficacy of PROTOX inhibitors in cassava varieties cultivated in clayey and sandy soils
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá