Life Sciences Commons^™

An Autecological Study Of Dyers Woad (Isatis Tinctoria L.) On Utah Rangeland, Ann T. Fuller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Northern Utah rangelands have become infested with dyers woad (Isatis tinctoria L.) and control is needed. Mechanical and chemical control on rangelands produce undesirable effects. A possible alternative is biological control, but information is not available on plant response to this control method. This autecological study and simulation of control methods examined dyers woad phenology, seed endurance and response to simulated grazing, hand rogueing and plowing. The phenology study documented dyers woad growth patterns from May 1982 to November 1983. During the first year, 65 percent of the seedlings died while the remaining 35 percent grew rosette leaves. During …