Some articles on knapweed, root:
... Since 1970, 12 insects have been released to control diffuse knapweed ... (Urophora affinis and Urophora quadrifasciata, the root boring beetle, Sphenoptera jugoslavica, and the weevil Larinus minutus ... Some of the more commonly utilized biocontrol agents are Lesser knapweed flower weevil (Larinus minutus) ...
Famous quotes containing the word root:
“...there is hope for a tree, if it is cut down, that it will sprout again, and that its shoots will not cease. Though its root grows old in the earth, and its stump dies in the ground, yet at the scent of water it will bud and put forth branches like a young plant. But mortals die, and are laid low; humans expire, and where are they?”
—Bible: Hebrew, Job 14:7-10.