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Pages 19-21

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From page 19...
... 20 Today's technologies pertaining to systems, biocontrol methods, cultural control materials, equipment, and other materials will enable roadside managers to benefit from the efficacy of contemporary IRVM programs. Acquisition of the new technologies and training for those employees who implement or use the new IRVM technologies will be the next challenges for highway roadside managers and decision makers.
From page 20...
... 21 invert-emulsion technology and equipment has existed for several decades, but has recently been reintroduced for roadside vegetation management programs. A roadside vegetation management research report by the commonwealth of Pennsylvania and Pennsylvania State University (29)
From page 21...
... 22 changed from predominately ornamental, as used from the 1940s to the 1970s, to today's often exclusively native plantings. The availability of native wetland plants has improved to the point where some plant nurseries now specialize in the production of large quantities of only wetland and aquatic species.

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