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| PAZUCH,D.; TREZZI,M.M.; GUIMARÃES,A.C.D.; BARANCELLI,M.V.J.; PASINI,R.; VIDAL,R.A.. |
| ABSTRACT Tolerance, also referred to as natural resistance, is a feature that exists in the plant even before herbicide application in an area. I. grandifolia, I. indivisa and I. purpurea are among the tolerant species most commonly found over fields in southern Brazil. We hypothesized that the intensive use of glyphosate results in increasing levels of tolerance to glyphosate, and in pronounced response variability in populations of the same Ipomoea species. This study aimed at identifying tolerance variations to glyphosate among I. grandifolia, I.indivisa and I. purpurea morning glory species and among populations of these species. In crops over Paraná and Santa Catarina states (Brazil) 31 biotypes were collected (20I. grandifolia, 7I.indivisa and 4I.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tolerance; Ipomoea grandifolia; Ipomoea indivisa; Ipomoea purpurea; Control; Dose-response. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100205 |
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| VITI,M.L.; ALVES,P.A.T.; MENDES,K.F.; PIMPINATO,R.F.; GUIMARÃES,A.C.D.; TORNISIELO,V.L.. |
| ABSTRACT: Glyphosate is easily exuded by the roots of plants. However, there is still some lack of information in the scientific literature as to whether Urochloa brizantha is capable of exuding glyphosate to influence the growth of crops such as sugarcane and citrus. Thus, the objective of this research was to evaluate the translocation and root exudation of 14C-glyphosate by U. brizantha and its transport in sugarcane and citrus. Sugarcane seedlings, varieties SP80-1842, and citrus ‘Limão Rosa’ (Citrus limonia L. Osbeck) were cultivated with U. brizantha around the seedlings. Using a microsphere, 14C-glyphosate was applied on the leaves of U. brizantha. The plants were cultured for 12 days after treatment (DAT). The radioactivity of the herbicide was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior in the plant; Radioisotope; Chemical sensitivity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100229 |
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| GUIMARÃES,A.C.D.; MENDES,K.F.; CAMPION,T.F.; CHRISTOFFOLETI,P.J.; TORNISIELO,V.L.. |
| ABSTRACT: Leaching intensity depends on the physicochemical properties of soils and herbicides. Consequently, a good understanding of this process is essential to determine mitigation measures to reduce or eliminate the risk of water contamination around areas with sugarcane crops. Therefore, the objective of this study was to analyze the leaching of ametryn, diuron, hexazinone, and metribuzin by using columns in five soils with different physicochemical properties cultivated with sugarcane. The radiolabeled herbicides with 14C were evaluated at six soil depths (0-0.05, 0.05-0.10, 0.10-0.15, 0.15-0.20, 0.20-0.25, and 0.25-0.30 m) and in the leachate after 200 mm rainfall simulation for 48 h. Herbicide leaching was mostly affected by soil type. Ametryn and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil behavior; Pre-emergent; Leachate; Mobility. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100228 |
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