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12/9/2019 ESD Printable Report <br /> Total: 500 1100 1600 <br /> Plant Growth Curve <br /> Growth curve number.- C06901 <br /> Growth curve name: Warm season/cool season co-dominant;MLRA-69;upland fine textured soils. <br /> Growth curve description: <br /> Percent Production by Month <br /> Jan Feb Mar Apr May Jun Jul Aug $gp Oct Nov Dec <br /> 0 0 5 10 20 30 20 10 3 2 0 0 <br /> G..Ah Curve <br /> % <br /> P <br /> r <br /> 0 6. <br /> d <br /> u i <br /> C <br /> i 3 <br /> 0 t <br /> n <br /> >!i hltr AL sy J.r. P—; S2L IY_Y ft <br /> Blue Grama Community <br /> „u <br /> Blue Grama Community <br /> This plant community developed with repeated continuous grazing without adequate recovery periods between grazing events and occurs <br /> frequently throughout most of MLRA 69.Galleta has been reduced.Green needlegrass,American vetch,purple prairie clover,fourwing <br /> saltbush and winterfat have been removed.Western wheatgrass may persist in trace amounts in protected areas,small depressions,and <br /> higher precipitation regimes within the MLRA.Blue grama and buffalograss(LRU B)dominate the Community and can form a"sodbound" <br /> appearance.Red threeawn,sand dropseed,tumblegrass,bottlebrush squirrletail,sixweeks fescue,plains pricklypear and hairy goldaster will <br /> all increase in varying amounts.In some instances,broom snakeweed will significantly increase. <br /> This plant community is resistant to change due to grazing tolerance of buffalograss and blue grama.A significant amount of production and <br /> diversity has been lost when compared to the Reference Community.Loss of cool season grasses,fourwing saltbush and winterfat,and <br /> nitrogen fixing forbs have negatively impacted energy flow and nutrient cycling.Water infiltration is reduced significantly due to the massive <br /> shallow root system,"root pan",characteristic of"sod bound"blue grama and buffalograss.Soil loss may be obvious where flow paths are <br /> connected.Desertification is advanced. <br /> It will take a very long time to restore this plant Community back to the Reference Community with improved grazing management. Renovation <br /> would be very costly and risky due to substantial inputs in energy and other resources required to replace the lost plant species. <br /> Total annual production ranges from 200 to 900 pounds of air-dry vegetation per acre per year and averages 600 pounds. <br /> Transitions or pathways leading to other plant communities are as follows: <br /> •Long-term prescribed grazing with adequate recovery periods following each grazing event and proper stocking over long periods of time will <br /> move this plant community toward the Reference State and will eventually return to the Reference Plant Community or associated <br /> successional plant community phases assuming an adequate seed/vegetative source is available.This state restoration pathway is a slow <br /> process,which may take greater than 40 years to accomplish. <br /> Plant Growth Curve <br /> Growth curve number. C06904 <br /> Growth curve name: Warm season dominant;MLRA-69;upland fine textured soils. <br /> Growth curve description: <br /> Percent Production by Month <br /> hftps://esis.sc.egov.usda.gov/ESDReporttfsReportPrt.aspx?id=R069XY006CO&rptLevel=all&approved=yes&repType=regular&scros=&comm= 7/18 <br />