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Land Imprinting Specifications for Reducing Watershed TMDL
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 471-471 in Total Maximum Daily Load (TMDL) Environmental Regulations–II Proceedings of the 8-12 November 2003 Conference (Albuquerque, New Mexico USA), Publication Date 8 November 2003. .(doi:10.13031/2013.15598)
Authors: R. M. Dixon and Ann B. Carr
Keywords: land imprinting, infiltration control, pollution control
The notill method for seeding of plants called land imprinting has been under
development in Tucson, Arizona since 1976. Through ecological weed control, land imprinting
has restored perennial grasses to 20,000 hectares of degraded rangeland in southern Arizona
since 1980. Imprinting accelerates the secondary succession of plant types past the weed stage
through superior control of rainwater at the soil surface. Early imprinters were massive machines
with large diameter rollers that were designed to operate on the rocky, brushy terrain of
southwestern deserts. Newly designed imprinters have smaller diameter rollers and are easier to
transport. Some can work on 2:1 slopes and even steeper. Simple seeders, directly driven from
the imprinting roller, deliver complex mixes of native seeds to the roller top where they are
carried forward, dropped on the soil surface and then imbedded in the imprint surfaces.
Vshaped imprints funnel resources downward where they ca!