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BUFFALOBUR
Buffalobur is an annual that reproduces solely by seed. The stiff spines of this weed can cause injury as well as contain poisonous alkaloids. It flowers throughout the summer and into the fall. Seeds mature shortly after flowering. It has fibrous roots with erect heavily branched stems. Mature plants grow 1 to 2 feet tall and are covered by straight yellow spines. This noxious weed may be found as a contaminant in birdseed. Buffalobur serves as a host for the Colorado potato beetle. These plants often break off at the soil and tumble in the wind, scattering seed. It can be found in some row crops, however, it is not a great competitor.
Control
Mechanical: Buffalobur cannot tolerate cultivation or continuous soil disturbances. For small infestations or scattered plants, digging, hoeing, or pulling the plants before blossoms appear is effective. Mowing can prevent seed production, if done before seedpods form. Since it is an annual, any method that prevents seed production, until the seed reserve in the soil is exhausted, will effectively eradicate it.
Biological: There is no insect available to control this noxious weed.
Herbicide: Products containing clopyralid or picloram have shown positive effects in rangeland, pastures, and other non-crop areas. Picloram is a “restricted use” product and can only be applied by a licensed applicator.
When choosing any kind of control method, assure that your choice is suited for your particular situation. Always read and follow the entire product label before applying any herbicide. |