Since it was first discovered by Bucha and Todd, that 3-(p-chlorophenyl)-1, 1-dimethylurea would kill most plants if applied at dosages of 20 pounds and above per acre there has been much speculation as to whether it is translocated in plants. Observations from early field trials indicating that soil treatments with this compound were more effective than foliar applications led to the assumption that entrance of the herbicide into plants was primarily through the roots. Loustalot demonstrated positively, however, that this substituted urea is also absorbed through the leaves and stems. Recent investigations at this laboratory, contrasting essentially equal applications on foliage and roots of several species, have also indicated that appreciable injury is caused by foliar absorption of the compound.