Cycocel

Cycocel is the commercial name for chlormequat chloride. It is the most widely used growth plant growth regulator in agriculture because it is also used to prevent lodging in grain crops. In greenhouse crops it is most commonly used on poinsettias, geraniums, azaleas and hibiscus. It is usually applied as a 1000 to 3000 ppm foliar spray. Cycocel is also effective as a substrate drench. Foliar cycocel applications often results in a phytotoxic response (marginal chlorosis), but the symptoms usually disappear after several days. In certain crops (i.e. poinsettia), a mixture of B-nine and Cycocel may be used. This usually provides for greater height control and reduces the potential for phytotoxicity.