Posted 6/22/2024 06:51 (#10782987 - in reply to #10782879) Subject: RE: Johnson Grass
South Central Illinois
When the heads are forming, The rhizomes are the weakest, After this the rhizomes are replenished, Roundup is more easily transported into the roots as the rhizomes are replenished. Tillage may help to weaken the rhizomes? This would need to happen after the Roundup has done its work.