A study has been made of the absorption and translocation of carbonyl-C14-labeled 3-(p-chlorophenyl)-l,1-dimethylurea (CMU) by bean plants. When this chemical is applied to the foliage of bean plants, it is quickly absorbed and translocated throughout the entire leaf. Translocation to the other parts of the plant is much slower. By means of paper chromatography, two major radioactive compounds ... [Show full abstract] have been found in 80% ethyl alcohol extracts of leaves from bean plants treated with radioactive CMU. One of the compounds was identified as unchanged CMU and the other was an unknown radioactive CMU complex. The concentration of CMU in the leaf extract decreases with time, while a corresponding increase occurs in the concentration of the CMU complex.