Bulgarian Journal of Agricultural Science
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Selectivity of mesotrione and tembotrione to white oat cultivars
Gesieli Priscila Buba, Clovis Arruda Souzaorcid, Camila Cigel, Franciele F. Fernandes, Eliton Fachin Cardoso
Abstract: Owing to increased production of oats, research on crop management is needed, especially for weed control. This work aimed to evaluate the selectivity of herbicides mesotrione and tembotrione to white oat. The experiment was conducted in the field (2019 and 2020) in a randomized block split-split plot design. The main plot contains cultivars FAEM-007, IPR-Afrodite, UPFA-Fuerza and URS-Monarca; the split plot, herbicides mesotrione and tembotrione; and the split-split plot, the following doses: mesotrione (0; 42; 84; 168 and 336 g a.i. ha-1) and tembotrione (0; 22.05; 44.1; 88.2 and 176.4 g a.i. ha-1). Yield was reduced by 12.8% (2019) and 6.0% (2020) and industrial yield by 14.5% (2019) and 6.0% (2020) after application of the 336 g of mesotrione, regardless of cultivar. Ther herbicides tembotrione (doses ≤176.4 g a.i. ha-1) and mesotrione (doses ≤168 g a.i. ha-1) are selective for white oat.
Keywords: Avena Sativa L.; carotenoid inhibitors; chemical control
Citation: Buba, G. P., Souza, C. A., Cigel, C., Fernandes, F. F. & Cardoso, E. F. (2026). Selectivity of mesotrione and tembotrione to white oat cultivars. Bulg. J. Agric. Sci., 32(2), 378–390
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Date published: 2026-04-29
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