Abstract Winter wild oat [ Avena sterilis ssp. ludoviciana (Durieu) Gillet & Magne; referred to as A. here] is one of the major weed species genus, given its high competitive ability infest cereal crops worldwide, with special concern in Spain. A nine-location field experiment was established across Spain where a total 400 seeds per location were sowed four replicates autumn 2016 monitor em...