Evaluación de tolerancia de malezas gramíneas a la aplicación de los herbicidas sistémicos: glifosato y cihalofop
This present research work was carried out in the farms of the “San Pablo” Farm in the Faculty of Agricultural Sciences of the Technical University of Babahoyo located at Km 7½ of the Babahoyo-Montalvo road, testing the tolerance of grass weeds to the application of glyphosate and cihalofop systemic...
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| Médium: | bachelorThesis |
| Jazyk: | spa |
| Vydáno: |
2020
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| Témata: | |
| On-line přístup: | http://dspace.utb.edu.ec/handle/49000/7249 |
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Přidat tag | Shrnutí: | This present research work was carried out in the farms of the “San Pablo” Farm in the Faculty of Agricultural Sciences of the Technical University of Babahoyo located at Km 7½ of the Babahoyo-Montalvo road, testing the tolerance of grass weeds to the application of glyphosate and cihalofop systemic herbicides. (a) Evaluate the degree of tolerance of tread weeds (Rottboellia cochinchinensis) and road grass (Panicum pilosum) of glyphosate and cihalofop herbicides. (b) Identify weeds that have tolerance of glyphosate and cihalofop herbicides. (c) Describe the morphological characteristics of grass weeds evaluated tolerant to herbicides of objects of study. The treatments are made up of two herbicides in different doses: T1 (glyphosate 2.0 L / Ha), T2 (glyphosate 1.5 L / Ha), T3 (glyphosate 1.0 L / Ha), T4 (glyphosate 2.0 L / Ha), T5 (glyphosate 1.5 L / Ha), T6 (glyphosate 1.0 L / Ha), T7 (cihalofop 2.0 L / Ha), T8 (cihalofop 1.5 L / Ha), T9 (cihalofop 1.0 L / Ha), T10 (cihalofop 2.0 L / Ha), T11 (cihalofop 1.5 L / Ha), T12 (cihalofop 1.0 L / Ha), T13 (control without application), T14 (control without application), the randomized complete block design with factorial arrangement AX B was used +2 and three repetitions with the 5% error test. The measures that were evaluated were: plant height at 20 40 and 60 days after transplantation, number of leaves at 30 and 60 days after transplantation, the toxicity index at 12 days, after application, the degree of tolerance at 30 days after application, number of tillers at 60 days after transplantation, weight of roots at 70 days after transplantation, weight of dry vegetative material. The evaluations were carried out at 20 days after sowing, the application of systemic herbicides was carried out at 25 days after sowing. |
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