Letter | Published:

Metabolism and Selectivity of Plant-growth Regulator Herbicides

Naturevolume 193pages485486 (1962) | Download Citation



THE inability of the herbicide 4-chloro-2-methyl phenoxyacetic acid (MCPA) to control certain dicotyledonous weeds can be overcome by introducing into the molecule a single α-alkyl substituent1. DL-α-(4-chloro-2-methylphenoxy) propionic acid (CMPP) is now widely used to control Galium aparine (cleavers), an important cornland weed.

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  1. 1

    Lush, G. B., and Leafe, E. L., Proc. Third British Weed Control Conf., 625 (1956).

  2. 2

    Fang, S. C., Weeds, 6, 179 (1958).

  3. 3

    Fang, S. C., and Butts, J. S., Plant Physiol., 29, 56 (1954).

  4. 4

    Jaworski, E. G., and Butts, J. S., Arch. Biochem. Biophys., 38, 207 (1952).

  5. 5

    Andreae, W. A., and Good, N. E., Plant Physiol., 32, 566 (1957).

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  1. Boots Pure Drug Co., Ltd., Research Department, Agricultural and Horticultural Division, Lenton Experimental Station, Nottingham

    • E. L. LEAFE


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