Witch's brooms are compact, rounded collections of short needles and small cones. They can sometimes make up the entire leafy crown of a tree. Staff at North Carolina State University are asking for ...
USDA Forest Service (FS) researchers are improving the use of ground-penetrating radar (GPR) to study tree roots nondestructively. They are refining GPR's processing capabilities by comparing results ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results