A low concentration is also economical. Use the Immerse Method by immersing the basal end of the cutting approximately one inch into the solution for four to twelve hours. Use 1-3 tablets per liter of water. Avoid using herbicides when rooting cuttings Drs. Gilliam, Eakes, and Olive at Auburn University studied how herbicide use during propagation affects root initiation and development.
Weed control is a serious problem during the rooting of stem cuttings of woody nursery crops.
Their studies demonstrate the potential suppression of root development when granular dinitroaniline herbicides are used during stem cutting propagation. Tests evaluated azalea and gardenia propagated using Rhizopon AA's active ingredient. Compared with controls, cuttings tested with some commercial herbicides exhibited suppressed root development, reduced root quality, root length, and lower dry weight. Propagators should conduct small scale tests evaluating specific herbicides and depth of sticking cuttings of individual species to be propagated prior to treating an entire crop. Use of fertilizers and fungicides when rooting cuttings Rhizopon AA products do not contain fertilizers or fungicides.