Rooting of Cuttings from Mature Water Oak

Abstract Seventy-six percent of the cuttings taken from girdled shoots of 19 to 57-year-old water oaks rooted in one month; only 20 percent of the control cuttings, which were not girdled, rooted. Girdled shoots were treated with a rooting powder containing auxins, sucrose, and fungicide in early May, six weeks before cuttings were taken and inserted in a rooting medium. Control cuttings received the same powder just before insertion in the rooting medium. Girdling also increased the number of roots on and survival of rooted cuttings.