Cottonwood trees are a staple of semi-arid environments, but there is a fine line between the minimum amount of water needed to maintain health, and mortality. The results from an 11-year study look at year-to-year growth, and die-back, patterns. (A, Bs)
ISA's scientific journal Arboriculture & Urban Forestry (AUF) helps disseminate new research findings about the management of trees in urban environments. This quiz highlights an article from an issue of AUF with the objective of bridging the gap between scientific research and practical application. Learn about the latest arboricultural research happening around the world while also earning your CEUs.
CEUs for this quiz may be earned only once during the life of your certification.