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LEAFY SPURGE
Leafy spurge is a creeping perennial that reproduces from seed and vegetative root buds. This plant will grow 1 to 3 feet tall. It produces a milky latex that can cause blistering and irritation to the skin. Leafy spurge has an extensive root system that is abundant in the top foot of soil; however, it can also grow to depths of 15 feet.
Control
Leafy spurge is best managed by using an integrated approach. Persistence is imperative. Cultural: In a pasture or rangeland setting, vigorous grass or other desirable growth is important.
Mechanical: This weed does not thrive well under regular cultivation. Mowing is usually ineffective and often impractical.
Biological: Cattle generally won't graze in dense patches of leafy spurge. It causes scours and weakness. When ingested in large amounts, it will cause death. Cattle industries suffer losses in the millions annually to leafy spurge. Persistent control is imperative. Sheep or goats will graze leafy spurge with no ill effects. Grazing with either of these animals is enough to reduce competition, allowing desirable grasses to take hold. There are a several flea beetle species that have proven effective in controlling leafy spurge. These beetles alone will not eliminate an infestation. Adults feed on the foliage, while larvae feed on or in the root.
Herbicide: Timing of a herbicide application is important. Products containing picloram or dicamba can be applied in the spring or early summer 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. |