Introduction For eight years, I have known that applying glyphosate to a frill (cuts around a stem) was more effective than applying the same concentration of this herbicide to the surface of a cut stump. I believed the reason applying glyphosate to a frill was more effective was because not cutting the stem kept sap … Continue reading My Hypothesis “Is Applying Herbicide to Frills More Effective Than Cut Stump Treatment Because the Stem Is Not Cut?” Has Been Disproved.