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• that rarely cause toxic problems or bloat, and when this occurs it is usually under <br />unusual conditions of weather, local abundance of the plant, animal hunger, etc. <br />Careful management will usually alleviate these problems. <br />3. M herM her a~,i al Ina1 Ini~rv - A plant that produces a mechanically injurious plant part dur- <br />ing some part of the growth cycle. <br />4, CLSnected - A plant of suspected but not cronfirmed toxicity. This category includes <br />some plants that are suspect because there are known toxic species in the same <br />genus. <br />5. t(q - A plant believed to be non-toxic. <br />C. -ro .h on Soils -The relative ability of a plant to show the full development of all <br />phases of its growth potential on a particular soil texture or soil type where the plant <br />normally occurs in Colorado. <br />D. -row h on 41on -a -The capability of a plant to grow naturally on gentle (0% - 8%), mod- <br />erate (9% - 30%) or steep (32 + %) slopes. <br />• E. Po an ial Bio ass Prod ,c .ion -The relative genetic ability of a plant to produce plant <br />material by weight on an annual basis compared to other members of the same life <br />form (a grass is rated against other greases, etc.). Species are rated as if growing on <br />the sites where they are typically found. <br />F. Erosion Control Potential - A plant which commonly exhibits growth habit, plant <br />structure, biomass and/or root system that has the potential to reduce soil erosion in <br />Colorado. <br />G. F.at hliahm nt Rea ,;r .m nta -The relative extent of cultural practices which must be <br />employed to insure a successful planting of the species on site to which it is adapted in <br />Colorado. <br />1. High -Species requires elaborate or intensive cultural practices. <br />2. Medium -Species requires standard tillage practices or special cultural practices <br />of short duration. <br />3. Low -Species requires only minimal cultural practices. <br />• <br />4.4-B-2 <br />