Control of Resistant False Cleavers (Galium spurium L.) Population to ALS-Inhibiting Herbicides and Its Impact on the Growth and Yield of Durum Wheat

False cleavers (Galium spurium L.) is an annual broadleaf weed, commonly found in cereal crops around the world. It reduces crop yields mainly by competition for nutrients and plant lodging, which decreases photosynthetic rate of cultivated plants. Two field experiments were carried out different locations to examine efficacy post-emergence herbicides against false durum wheat (Triticum Desf.). Herbicides that belong sulfonylureas, triazolopyrimidines, other groups (e.g., nitriles synthetic auxins) applied. The results revealed herbicide florasulam + aminopyralid provided low (57%) this weed species, while most effective bromoxynil 2,4-D halauxifen-methyl florasulam. Bromoxynil was 73% 97% at Domokos Velestino, respectively, ranged between 89% 97%. Moreover, metsulfuron-methyl bensulfuron-methyl pyroxsulam/florasulam (<11%) cleavers, revealing resistance ALS-inhibiting herbicides. Regarding impact species on growth wheat, showed greatest dry biomass (8508.3–8922.7 kg ha−1 13,041.4–13,523 respectively) 2,4-D, florasulam, weed-free treatments. Similar also recorded 1000-seed weights yields, there no statistically significant differences among treatments spike length. Finally, our effectively controlled resistant population. However, it important note recently registered Greece countries and, thus, should be used sensibly farmers a rotation with prevent development populations.