Studies show as much as five-fold resistant shattercane in northwest Kansas fields HAYS, Kan. – Kansas State University researchers are reporting that shattercane, a grass weed found in grain sorghum fields, is showing resistance to herbicides. Vipan Kumar, a weed scientist at the K-State Agricultural Research Center in Hays, said the findings are particularly important as producers decide on whether to plant three new grain sorghum hybrids this summer. “Three new herbicide-tolerant sorghum (varieties) –…