Determination and Mapping of Resistant Wild Oat (Avena sterilis L.) Populations to Most Commonly Used Herbicides in Wheat Fields for Osmaniye, Turkey

Abstract

This study aimed to determine the resistance levels of ACCase [Acetyl CoA Carboxylase] (Clodinafop-propargyl) and ALS [Acetolactate Synthase] (Mesosulfuron-methyl + Iodosulfuron-methyl sodium and Pyroxulam) inhibitor herbicides against wild oat (Avena sterilis L.) in Osmaniye and Cukurova. 103 sampling points were determined and sampled for two years to
reveal the resistance index. It was determined that wild oat frequency percentage was 81.84% in 49 fields, 67.03% in 63 fields and 80.7% in 80 fields between 2013 and 2015. In the study, resistance maps were created for use with herbicides in Osmaniye. Cross-resistance was observed in 103 sampling points in 51 fields. Furthermore, multiple resistance was observed against ACCase and ALS inhibitors in 5 fields.