Yellow starthistle (Centaurea solstitialis L.) is a member of the knapweed
(Centaurea L.) complex. It is poor forage for all livestock and causes
“chewing disease,” a nervous disorder, in horses. Yellow starthistle infests
millions of acres in California and the Pacific Northwest. Infestations range
from scattered plants to dense stands...
Common groundsel, native
to Europe, is now common
throughout the temperate regions
of the world. It is widespread
in Oregon, Washington,
and Idaho, but most common
west of the Cascade Mountains.
This weed is found in many
crops, including forages, cereals,
mint, berries, and row
crops, as well as in...
Dwarf mistletoes exert an impact on forest productivity, but this impact can be reduced through management practices. Even infested stands can yield considerable volumes if proper control methods are used. Projections of future yield increases due to control efforts are made. Cost of treatment in fiscal year 1973 was $51...