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• <br />MONIERCO SERIES <br />LOCATION NM+AZ <br />Established Series <br />Rev.CW KlLW H <br />10/90 <br />The Monierco series consists of shallow, well drained moderatelyslowlypeaneable soils that formed from alluvium <br />and eolian material derived dominantly from interbedded siltstone and shale. Monierco soils are on knolls and <br />ridges on plateaus and mesas. Slopes range from 0 to 8 percent. The mean annual predpitation is about 8 inches <br />and the mean annual temperature is about 53 degrees F. <br />TAXONOMIC CLASS: Loamy, mixed, mesic, shallow Typic Haplargids <br />TYPICAL PEDON: Monierco fine sandy loam rangeland. <br />(colors are for dry soil unless otherwise noted.) <br />A--0 to 3 inches; light yellowish brown (10YR 614) fine sandy foam, brown (10YR 413) moist; weak fine granular <br />• structure; soft, very friable, slightly sticky and slighty plastic; few very fine roots; few fine pores; mildly alkaline (pH <br />7.8); clear smooth boundary. (2 to 3 inches thick) <br />• <br />Bw-3 to 5 inches; yellowish brown (10YR 5/4) fine sandy loam, dark yellowish brown (10YR 4!4) moist; weak <br />medium subangular blocky structure; soft, veryfriable, slightly sticky and Blighty plastic; common fine and veryfine <br />roots; few fine pores; mildly alkaline (pH 7.8); dear smooth boundary. (2 to 4 inches thick) <br />Bt-5 to 10 inches; brown (7.5YR 5/4) day loam, dark brown (7.SYR 4/4) moist; moderate fine subangular blocky <br />structure; hard, friable, sticky and plastic; thin continuous day films on faces of peds; common fine and very fine <br />roots; few fine and medium pores; moderately alkaline (pH 7.8); dear wavy boundary. (4 to 6 inches thick) <br />Bk-10 to 16 inches; pale brown (10YR 6/3) Gay loam, brown (tOYR 5/3) moist; weak fine subangular blocky <br />structure; hard, friable, slighfy sticky and slightly plastic; few fine and very fine roots; few fine continuous pores; <br />strongly effervescent with disseminated calcium carbonate; strongly alkaline (pH 8.9); Gear smooth boundary. (2 <br />to 7 inches thick) <br />(Revised March Zoos) Attachment 2.04.9-3-23 <br />2 Cr-16 inches; siltstone and shale. <br />