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Avila Neto Roberto Costa,de Souza Pablo Mazzuco,Rubert Jaine,Seibt Tiago André,Thomasi Rosana Marzari,Melo Adriano Arrué,Alves Marcelo Plada,da Rosa Ulguim André 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.2
Herbicides belonging to the chemical group imidazolinones and the quinclorac herbicide are important to control weeds in fooded rice. The objective of this research was to evaluate the interaction of imidazolinones with quinclorac to control Cyperus iria resistant to acetolactate synthase inhibitors (ALS). It was conducted two experiments in a greenhouse in a completely randomized design with four replications. Colby’s methodology was used for experiment 1, through the application of quinclorac isolated and in mixture with herbicides imazethapyr, imazapyr e imazapic. The experiment 2, using dose–response curves, tested the herbicides quinclorac isolated and in diferent mixtures with the herbicide imazethapyr. For experiment 1, the expected and observed averages were compared. For experiment 2, the results were analyzed using the sigmoidal logistic model. Additive is the main interaction of mixtures of quinclorac with diferent herbicides from the chemical group of imidazolinones to control resistant C. iria. Mixing with imazethapyr at diferent proportions can cause an additive efect with quinclorac at higher doses.