2011-11-02_REVISION - M2003019 (5)

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Growth c curve name. W Growth curve name. a , JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 0 0 0 0 15 . 45 25 15 0 0 0 0 Site Type: Rangeland Loamy MLRA: 69 - Upper Arkansas Valley Rolling Plains R069XY006CO • Long -term prescribed grazing with adequate recovery periods following each grazing event and proper stocking over long periods of time move this plant community toward the Increased Blue Grama, Buffalograss, Galleta; with Cool Season Remnants Plant Community and will eventually return to the HCPC or associated successional plant community stages assuming an adequate seed /vegetative source is available. This transition is a slow process, which, may take greater than 40 years to accomplish. Red Threeawn, Annuals, Bare Ground Plant Community This plant community develops with heavy continuous grazing, excessive defoliation by herbivores and Tong -term non -use. Red threeawn is the dominant species. Blue grama and /or buffalograss may persist in localized areas. Annuals such as little annual barley, sixweeks fescue, cheatgrass, kochia and Russian thistle are present. Litter levels are extremely low. Erosion is evident where flow paths are continuous. Rills may occur on steeper slopes. Wind scoured areas may be apparent on knolls or unprotected areas. The nutrient cycle, water cycle and overall energy flow are greatly impaired. Organic matter /carbon reserves are greatly reduced. This community is not stable. Desertification is obvious. Total annual production can vary from 0 to 150 pounds of air -dry vegetation per acre. The following is the growth curve of this plant community expected during a normal year: Growth curve number: C06901 • �Aa��n co- - u 1 land fine textured soils. (monthly percentages of total annual gro Transitions or pathways leading to other plant communities are as follows: • Long-term prescribed grazing with adequate recovery periods between each grazing event and proper stocking can eventually move this community back to the Historic Climax Plant Community or associated successional plant community stages, assuming an adequate seed source is available. This transition will take a long time (40 to 80 years or more) to achieve. • Range seeding followed by prescribed grazing may be used as an alternative to convert this plant community to a Seeded Rangeland community, which can closely resemble the HCPC however, at a substantial cost. Oneseed Juniper Plant Community This plant community is typically found adjacent to a juniper seed source. Invasion of the juniper has occurred. Lack of fire and long -term non -use accelerate the invasion. Prescribed grazing, brush management and fire can be used to prevent encroachment. In higher canopy cover situations, soil erosion will increase. The water cycle is significantly altered under higher canopies. Infiltration is reduced because of interception of rainfall by the canopy and runoff is increased. The following is the growth curve of the dominant species expected during a normal year: Growth curve number: C06904 • W rm season dominant • MLRA -69: upland fine textured soils. (monthly percentages of total annual growth) Transitional pathways and /or community pathways leading to other plant communities are as follows: Technical Guide Section IIE 10 USDA NRCS Rev. 3/04 Site Type: Rangeland Loamy MLRA: 69 - Upper Arkansas Valley Rolling Plains R069XY006CO • Long -term prescribed grazing with adequate recovery periods following each grazing event and proper stocking over long periods of time move this plant community toward the Increased Blue Grama, Buffalograss, Galleta; with Cool Season Remnants Plant Community and will eventually return to the HCPC or associated successional plant community stages assuming an adequate seed /vegetative source is available. This transition is a slow process, which, may take greater than 40 years to accomplish. Red Threeawn, Annuals, Bare Ground Plant Community This plant community develops with heavy continuous grazing, excessive defoliation by herbivores and Tong -term non -use. Red threeawn is the dominant species. Blue grama and /or buffalograss may persist in localized areas. Annuals such as little annual barley, sixweeks fescue, cheatgrass, kochia and Russian thistle are present. Litter levels are extremely low. Erosion is evident where flow paths are continuous. Rills may occur on steeper slopes. Wind scoured areas may be apparent on knolls or unprotected areas. The nutrient cycle, water cycle and overall energy flow are greatly impaired. Organic matter /carbon reserves are greatly reduced. This community is not stable. Desertification is obvious. Total annual production can vary from 0 to 150 pounds of air -dry vegetation per acre. The following is the growth curve of this plant community expected during a normal year: Growth curve number: C06901 • �Aa��n co- - u 1 land fine textured soils. (monthly percentages of total annual gro Transitions or pathways leading to other plant communities are as follows: • Long-term prescribed grazing with adequate recovery periods between each grazing event and proper stocking can eventually move this community back to the Historic Climax Plant Community or associated successional plant community stages, assuming an adequate seed source is available. This transition will take a long time (40 to 80 years or more) to achieve. • Range seeding followed by prescribed grazing may be used as an alternative to convert this plant community to a Seeded Rangeland community, which can closely resemble the HCPC however, at a substantial cost. Oneseed Juniper Plant Community This plant community is typically found adjacent to a juniper seed source. Invasion of the juniper has occurred. Lack of fire and long -term non -use accelerate the invasion. Prescribed grazing, brush management and fire can be used to prevent encroachment. In higher canopy cover situations, soil erosion will increase. The water cycle is significantly altered under higher canopies. Infiltration is reduced because of interception of rainfall by the canopy and runoff is increased. The following is the growth curve of the dominant species expected during a normal year: Growth curve number: C06904 • W rm season dominant • MLRA -69: upland fine textured soils. (monthly percentages of total annual growth) Transitional pathways and /or community pathways leading to other plant communities are as follows: Technical Guide Section IIE 10 USDA NRCS Rev. 3/04