The experimental design included several treatments at differing concentrations of plant growth regulators, compared to a control, to investigate variations in seed germination rates and growth rates of the three invasive plants. For the germination studies 20 seeds of each plant species were placed into Petri dishes containing either distilled water or treatment solutions of 0, 0.1, 1 and 10 mM gibberellic acid (GA) and treatment solutions of 0, 0.1, 1 and 10 mM abscisic acid (
A major problem in preventing invasion by undesirable species is our ability to manage plant establishment, which is largely controlled by the timing of seed germination and rapid growth rates. These attributes provide a selective advantage over native species by contributing to an invasive species ability to establish itself on disturbed lands and reproduce. While commercially available growth regulators are commonly used to suppress seed germination and reduce vegetative growth in turfgrass such as tall fescue (Lolium arundinaceum), very little work has been done looking at the use of growth regulators for the control and management of invasive weeds. The results of this study will provide information about the control and management of invasive plant species using phytohormones.