Developing Growth Promotion Strategies for Cressa truxillensis to Improve Success of Restoration Activities

Biology, Germination Ecology, and Shade Tolerance of Alkaliweed (Cressa truxillensis) and Its Response to Common Postemergence Herbicides

“…Nevertheless, our study showed that this species can possibly germinate in the acidic soils that occur in many areas of the east side of the Central Valley. There is only one study that has reported the effect of salinity levels on alkaliweed and it showed that 300 mM (approximately 30 dS m −1 ) delayed seed germination [3], but in our study, the highest level of salt concentration tested was 25 dS m −1 (approximately 250 mM). However, there are examples from other species in the Convolvulaceae family.…”

“…Alkaliweed has primarily been associated with natural areas, field margins, and ditch banks. This species is also reported to be used in revegetation projects in saline and alkaline soils in California [ 3 ]. However, in recent years, alkaliweed has been observed to spread by canals and waterways, shifting populations into agricultural areas.…”

“…In addition, very little is known about its asexual reproductive ability. The study that focused on environmental parameters required for seed germination did not discuss the asexual reproductive ability of this species [ 3 ]. The populations of alkaliweed in Kings County were observed in moderately alkaline and saline soils prone to summer drought.…”

“…Observations made over two Very little is known about the germination ecology of alkaliweed seeds, specifically in response to environmental stresses caused by soil pH, salinity, and moisture. There is one study that looked at seed scarification as a method to improve the germination of this species [3]. The same study also evaluated the effect of salt stress on seed germination.…”