Evidence strongly supports the claim that Roundup (glyphosate) effectively kills targeted weed species, as demonstrated across numerous agricultural studies and field applications. While the emergence of glyphosate-resistant weed populations in recent years highlights limitations and the need for integrated management, the herbicide remains highly effective against a broad spectrum of susceptible weed species.
The retrieved literature contains numerous studies demonstrating that glyphosate effectively controls and kills a wide range of targeted weed species in various crops. While papers [1] and [2] document the evolution of resistance in certain specific weed populations (waterhemp and ryegrass), the overwhelming majority of empirical studies (such as [0], [4], [6], [7], and [9]) confirm its high efficacy in killing targeted weeds. The emergence of resistance does not invalidate the general effectiveness of the herbicide on susceptible populations, though it indicates that effectiveness is now bounded by resistance management concerns. Thus, the verdict is SUPPORTED.