Contact <BR>Rupture cell membranes. <BR>Symptoms appear within hours. <BR>Need complete coverage for kill. <BR>Xylem Mobile <BR>Taken up by primarily by roots. <BR>Found in older leaves that are exporting sugars. <BR>Do not move downward when foliar applied. <BR>Phloem Mobile <BR>Move to points of active growth or food storage. <BR>Affect shoot tips, young buds and leaves. <BR>Can cause contact burn. <BR>Herbicide Movement in Plants<BR>