Utility of Plant Growth Regulation in Cotton Production
- FAR WEST
Plant growth regulators (PGRs) are commonly used to manage vegetative growth in cotton. The PGR most often used in cotton, mepiquat chloride (MC), was marketed by a single manufacturer, BASF Corporation, from 1984 until 1998. Upon patent xpiration, several generic MC products were commercialized and the price of MC dropped significantly. Shortly thereafter, several new products that featured MC as their principal ingredient were introduced. Most of these products were new ormulations or salts of MC, or combinations of MC with synthetic plant hormones. These new products are typically offered at prices higher than that of generic MC products, and they promised benefits beyond those the sellers claimed could be achieved with the old formulation of MC. This report evaluates the newer MC products examines if there are any additional benefits to their use.