The application of growth modifiers to the production of latex

Abstract

Substituted phenoxyacetic acids such as 2,4-D and 2,4,5-T have been used commonly since the 1950s to increase the duration of latex flow in commercial rubber trees. Recognition that the mode of action was through stimulation of production by the plant tissues of higher levels of ethylene gas coincided with the introduction of ethylene-generating compounds. Two of these, ethephon (2-chloroethylphosphonic acid), and adsorbent powders impregnated with ethylene, are highly effective as latex yield stimulants particularly when formulated in suitable viscous carriers.