A common term for some types of vegetation is "noxious weeds", which can be any plant in any stage of development, including parasitic plants, whose presence, whether direct or indirect, is detrimental to crops or other desirable plants, livestock, land, or other property, or is injurious to the public health. The North Carolina Department of Agriculture and Consumer Services (NCDA & CS) maintains a list of weeds considered "noxious". The current list includes these:
Many of the
above-listed "noxious" weeds are found on North Carolina roadsides.
Another term commonly used for undesirable vegetation is pestiferous weeds, which can be any plant regardless of its stage of development and irregardless
of its status on NCDA & CS's noxious weeds list, that persists in the rights-of-way and is so considered to be annoying, bothersome, or unsightly. The roadside environment often includes pestiferous weeds that are of particular concern to both public right-of-way interests as well as adjacent private landowners. In general, the predominate herbicide applications for control of these weeds would be of the selective post-emergence type. As mentioned previously for kudzu, the NCDOT may participate in a cooperative eradication
program with adjacent property owners, whereby each party must control
the undesirable vegetation on their respective property. This program
has proven to be successful in reducing the competition of problem species.
Aquatic weeds such as alligator weed and purple loosestrife, may be controlled along canals and wet ditches to facilitate drainage. For this purpose, the NCDOT selects only herbicides that are properly labeled for
aquatic use. Personnel involved in application of properly labeled herbicides along waterways are licensed for aquatic pesticide applications.
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