Response of some new clonal cherry rootstocks to soil active herbicides

Five non-grafted clonal cherry rootstocks (Gisela 6, GI 148-1; Gisela 7, 14 8-8; Gisela 8, 148-9; Gisela 10, 173-9; Gisela 11, 195-1) were treated with label rates and double label rates to assess their response to soil active herbicides. Clonal cherry rootstock Giessen 148-9 showed reduced growth an d greater visual herbicide symptoms than the other GI rootstocks used. Terb acil produced the greatest reduction in growth and the greatest visual symp toms across all clones. These cherry rootstocks do not appear overly sensit ive to soil active herbicides even when applied at greater than labeled rat es.