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• amounts to cause harmful effects in livestock, or produce <br />mechanically injurious plant parts. <br />Plants are included in only one category in the Following order of <br />description precedence. <br />1. Manor - A plant that typically produces substances of high toxicity, <br />may be highly or moderately palatable, and is usually available in <br />its range. This category includes plants that often accumulate <br />selenium or molybdenum or nitrates to toxic levels. Plants in this <br />category cause the majority of livestock losses. <br />2. Minor - A plant that produces substances of low toxicity and/or <br />rarely produces substances of high toxicity, and/or has low <br />palatability, and/or is usually unavailable or rare in its range. <br />This category includes plants that are secondary selenium or <br />• molybdenum accumulators. It should be noted that also included in <br />this category are legumes, crop plants and other species of <br />significant economic value that rarely cause toxic problems or bloat, <br />and when this occurs it is usually under unusual conditions of <br />weather, local abundance of the plant, animal hunger, etc. Careful <br />management will usually alleviate these problems. <br />3. Mechanical Injury - A plant that produces a mechanically injurious <br />plant part during some part of the growth cycle. <br />9. Suspected - A plant of suspected but not confirmed toxicity. This <br />category includes some plants that are suspect because there are <br />known toxic species in the same genus. <br />5. ~ - A plant believed to be non-toxic. <br />C. Growth on Soils - The relative ability of a plant to show the full <br />• development of all phases of its growth potential on a particular <br />Mid-term '94 4.4-A-2 September 15,1994 <br />