Soil Survey of Coosa County, Alabama
part of a hillslope continuum that grades to valley or closed-depression floors
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part of a hillslope continuum that grades to valley or closed-depression floors.
Topsoil. The upper part of the soil, which is the most favorable material for plant growth. It is ordinarily rich in organic matter and is used to topdress roadbanks, lawns, and land affected by mining. Trace elements. Chemical elements, for example, zinc, cobalt, manganese, copper, and iron, in soils in extremely small amounts. They are essential to plant growth. Upland. An informal, general term for the higher ground of a region, in contrast with a low-lying adjacent area, such as a valley or plain, or for land at a higher elevation than the flood plain or low stream terrace; land above the footslope zone of the hillslope continuum. Valley fill. The unconsolidated sediment deposited by any agent (water, wind, ice, or mass wasting) so as to fill or partly fill a valley. Variegation. Refers to patterns of contrasting colors assumed to be inherited from the parent material rather than to be the result of poor drainage. Water bars. Smooth, shallow ditches or depressional areas that are excavated at an angle across a sloping road. They are used to reduce the downward velocity of water and divert it off and away from the road surface. Water bars can easily be driven over if constructed properly. Weathering. All physical disintegration, chemical decomposition, and biologically induced changes in rocks or other deposits at or near the earth’s surface by atmospheric or biologic agents or by circulating surface waters but involving essentially no transport of the altered material. Well graded. Refers to soil material consisting of coarse grained particles that are well distributed over a wide range in size or diameter. Such soil normally can be easily increased in density and bearing properties by compaction. Contrasts with poorly graded soil. Wilting point (or permanent wilting point). The moisture content of soil, on an ovendry basis, at which a plant (specifically a sunflower) wilts so much that it does not recover when placed in a humid, dark chamber. Windthrow. The uprooting and tipping over of trees by the wind. 169 Tables 170 Soil Survey Table 1 .—Temperature and Precipitation (Recorded in the period 1971 2000 at Sylacauga, Alabama) _______________________________________________________________________________ | Temperature (Degrees F.) | Precipitation (Inches) ____________________________________________________________________ | | | |2 yrs in 10| | | 2 yrs in 10 |Avg | | | | | will have | Avg | | will have |# of| Avg _____________________________ _____________ | | | | | | # of| | | |days| total Month | Avg | Avg | Avg |Max | Min |grow | Avg | Less | More |w/.1| snow |daily|daily| |temp.|temp.|deg | | than | than | or| fall | max | min | |>than| _______________________________________________________________________________ January | 55.7| 31.9| 43.8| 75 | 7 | 56| 5.77| 3.62| 7.77| 8 | 0.3 February | 60.3| 34.1| 47.2| 78 | 12 | 74| 5.37| 3.27| 7.28| 7 | 0.1 March | 68.2| 40.9| 54.5| 86 | 20 | 200| 6.03| 3.25| 8.51| 7 | 0.4 April | 75.0| 45.7| 60.4| 89 | 28 | 322| 4.56| 2.14| 7.08| 6 | 0.1 May | 82.5| 55.1| 68.8| 93 | 37 | 584| 3.66| 2.27| 4.98| 6 | 0.0 June | 88.0| 62.5| 75.3| 97 | 45 | 758| 4.36| 2.09| 6.43| 7 | 0.0 July | 91.0| 66.2| 78.6| 100 | 55 | 880| 5.10| 2.34| 7.84| 8 | 0.0 August | 90.6| 65.1| 77.9| 100 | 54 | 861| 3.74| 2.34| 5.04| 6 | 0.0 September | 85.5| 59.1| 72.3| 96 | 39 | 669| 4.23| 1.82| 6.53| 5 | 0.0 October | 76.7| 47.2| 62.0| 89 | 28 | 377| 3.12| 1.16| 4.94| 4 | 0.0 November | 66.5| 38.9| 52.7| 84 | 19 | 160| 4.89| 3.02| 6.31| 6 | 0.0 December | 57.5| 33.3| 45.4| 77 | 10 | 74| 5.13| 3.14| 6.62| 7 | 0.0 | | | | | | | | | | | | | | | | | | | | | | Yearly : | | | | | | | | | | | | | | | | | | | | | | Average | 74.8| 48.3| 61.6| | | | | | | | | | | | | | | | | | | Extreme | 104| 4| | 101 | 4 | | | | | | | | | | | | | | | | | Total | | | | | | 5014| 55.96| 47.18| 63.53| 77 | 1.0 | | | | | | | | | | | _______________________________________________________________________________ Average # of days per year with at least 1 inch of snow on the ground: 0 *A growing degree day is a unit of heat available for plant growth. It can be calculated by adding the maximum and minimum daily temperatures, dividing the sum by 2, and subtracting the temperature below which growth is minimal for the principal crops in the area (Threshold: 50.0 deg. F) Coosa County, Alabama 171 Table 2 .—Freeze Dates in Spring and Fall (Recorded in the period 1971-2000 at Sylacauga, Alabama) ________________________________________________________________________ | Temperature ____________________________________________ Probability | 24F or lower | 28F or lower | 32F or lower ________________________________________________________________________ | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | March 18 | April 7 | April 19 | | | 2 year in 10 later than-- | March 11 | April 1 | April 15 | | | 5 year in 10 later than-- | February 26 | March 19 | April 9 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | November 3 | October 21 | October 6 | | | 2 yr in 10 earlier than-- | November 10 | October 28 | October 13 | | | 5 yr in 10 earlier than-- | November 23 | November 9 | October 26 | | | ________________________________________________________________________ Table 3 .—Growing Season (Recorded for the period 1971-2000 at Sylacauga, Alabama) ________________________________________________________________________ | Daily Minimum Temperature ____________________________________________ Probability | # days > 24F | # days > 28F | # days > 32F ________________________________________________________________________ | | | 9 years in 10 | 241 | 208 | 179 | | | 8 years in 10 | 250 | 216 | 186 | | | 5 years in 10 | 268 | 233 | 199 | | | 2 years in 10 | 287 | 249 | 212 | | | 1 year in 10 | 296 | 257 | 219 | | | ________________________________________________________________________ 172 Soil Survey Table 4 .—Acreage and Proportionate Extent of the Soils _______________________________________________________________________________________________________ | | | Map | Soil name | Acres |Percent symbol | | | _______________________________________________________________________________________________________ | | | AcB |Alcovy sandy loam, 2 to 6 percent slopes---------------------------------| 509 | 0.1 AlC2 |Allen gravelly sandy loam, 2 to 10 percent slopes, moderately eroded-----| 464 | 0.1 AtB |Altavista fine sandy loam, 2 to 6 percent slopes, rarely flooded---------| 1,178 | 0.3 BdB2 |Badin-Tatum-Tallapoosa complex, 2 to 6 percent slopes, moderately eroded-| 1,604 | 0.4 BfC |Badin-Tallapoosa-Fruithurst complex, 3 to 10 percent slopes--------------| 9,620 | 2.3 BmD2 |Bethlehem-Madison Complex, 6 to 15 percent slopes, moderately eroded-----| 22,123 | 5.2 CeB2 |Cecil sandy loam, 2 to 6 percent slopes, moderately eroded---------------| 7,707 | 1.8 CeC2 |Cecil sandy loam, 6 to 10 percent slopes, moderately eroded--------------| 11,578 | 2.7 ChA |Chewacla, Cartecay, and Toccoa soils, 0 to 1 percent slopes, frequently | | |flooded------------------------------------------------------------------| 26,127 | 6.1 DaB |Davidson clay loam, 2 to 6 percent slopes--------------------------------| 405 | * DAM |Dam----------------------------------------------------------------------| 1 | * DdD3 |Davidson clay loam, 6 to 15 percent slopes, severely eroded--------------| 2,987 | 0.7 DeB |Decatur silt loam, 2 to 6 percent slopes---------------------------------| 1,479 | 0.3 EnB |Enon-Wynott complex, 2 to 6 percent slopes-------------------------------| 3,603 | 0.8 GrD |Grover sandy loam, 6 to 15 percent slopes--------------------------------| 22,926 | 5.4 HdB |Hard Labor loamy sand, 2 to 6 percent slopes-----------------------------| 3,872 | 0.9 HdC |Hard Labor loamy sand, 6 to 10 percent slopes----------------------------| 2,641 | 0.6 LcB |Locust fine sandy loam, 2 to 6 percent slopes----------------------------| 1,749 | 0.4 LoF |Louisa-Mountain Park complex, 30 to 50 percent slopes--------------------| 17,141 | 4.0 LrD |Louisburg-Rion-rock outcrop complex, 6 to 15 percent slopes, very | | |bouldery-----------------------------------------------------------------| 5,925 | 1.4 LrE |Louisburg-Rion-rock outcrop complex, 15 to 35 percent slopes, very | | |bouldery-----------------------------------------------------------------| 15,274 | 3.6 MaB2 |Madison fine sandy loam, 2 to 6 percent slopes, moderately eroded--------| 4,064 | 1.0 MaD2 |Madison fine sandy loam, 6 to 15 percent slopes, moderately eroded-------| 17,233 | 4.0 MdE2 |Madison-Louisa complex, 15 to 30 percent slopes, moderately eroded-------| 60,920 | 14.3 MxD2 |Mecklenburg gravelly loam, 6 to 15 percent slopes------------------------| 8,892 | 2.1 PaC2 |Pacolet gravelly sandy loam, 3 to 10 percent slopes, moderately eroded---| 17,496 | 4.1 PrD2 |Pacolet-Rion complex, 6 to 15 percent slopes, moderately eroded, stony---| 27,790 | 6.5 PrE2 |Pacolet-Rion complex, 15 to 25 percent slopes, moderately eroded, stony--| 16,647 | 3.9 Pt |Pits, borrow-------------------------------------------------------------| 96 | * ShA |Shellbluff loam, 0 to 2 slopes, frequently flooded-----------------------| 1,517 | 0.4 SpB |Springhill sandy loam, 2 to 5 percent slopes-----------------------------| 57 | * SwF |Sweetapple-Mountain Park complex, 15 to 40 percent slopes----------------| 5,860 | 1.4 TaD2 |Tallapoosa-Badin-Fruithurst complex, 6 to 15 percent slopes, moderately | | |eroded-------------------------------------------------------------------| 35,695 | 8.4 TfE2 |Tallapoosa-Fruithurst complex, 15 to 40 percent slopes, moderately eroded| 35,510 | 8.3 ToA |Toccoa fine sandy loam, 0 to 2 percent slopes, occasionally flooded------| 2,033 | 0.5 TwD |Townley gravelly fine sandy loam, 6 to 15 percent slopes-----------------| 1,122 | 0.3 TxE |Townley-Montevallo complex, 15 to 40 percent slopes----------------------| 1,710 | 0.4 W |Water--------------------------------------------------------------------| 10,482 | 2.5 WeC2 |Wedowee gravelly sandy loam, 3 to 10 percent slopes, moderately eroded---| 4,941 | 1.2 WeD2 |Wedowee gravelly sandy loam, 6 to 15 percent slopes, moderately eroded---| 6,755 | 1.6 WfE |Wedowee very gravelly sandy loam, 15 to 35 percent slopes----------------| 1,215 | 0.3 WhA |Wehadkee silt loam, 0 to 2 percent slopes, frequently flooded------------| 2,264 | 0.5 WkB |Wickham sandy loam, 2 to 6 percent slopes, rarely flooded----------------| 1,294 | 0.3 WnE |Wynott-Wilkes complex, 15 to 45 percent slopes, very stony---------------| 1,504 | 0.4 WyD |Wynott-Winnsboro complex, 6 to 15 percent slopes, very stony-------------| 2,470 | 0.6 | _____________________ | Total---------------------------------------------------------------| 426,480 | 100.0 _______________________________________________________________________________________________________ * Less than 0.1 percent. Coosa County, Alabama 173 Table 5a .—Land Capability Class and Nonirrigated Yields by Map Unit (Part 1) (Yields are those that can be expected under a high level of management. They are for nonirrigated areas. Absence of a yield indicates that the soil is not suited to the crop or the crop generally is not grown on the soil.) __________________________________________________________________________________________ | | | | | Map symbol | Land | Corn |Cotton lint | Soybeans | Wheat and soil name | capability | | | | __________________________________________________________________________________________ | | Bu | Lbs | Bu | Bu | | | | | AcB: | | 75.00 | 800.00 | 30.00 | 45.00 Alcovy------------------| 2e | | | | | | | | | AlC2: | | 90.00 | --- | 36.00 | 54.00 Allen-------------------| 3e | | | | | | | | | AtB: | | 115.00 | 650.00 | 40.00 | 55.00 Altavista---------------| 2e | | | | | | | | | BdB2: | | 85.00 | --- | 25.00 | 40.00 Badin-------------------| 3e | | | | Tatum-------------------| 3e | | | | Tallapoosa--------------| 3e | | | | | | | | | BfC: | | 45.00 | 350.00 | --- | --- Badin-------------------| 3e | | | | Tallapoosa--------------| 4e | | | | Fruithurst--------------| 3e | | | | | | | | | BmD2: | | --- | --- | --- | --- Bethlehem---------------| 4e | | | | Madison-----------------| 4e | | | | | | | | | CeB2: | | 95.00 | 750.00 | 35.00 | 45.00 Cecil-------------------| 2e | | | | | | | | | CeC2: | | 60.00 | 700.00 | 25.00 | 40.00 Cecil-------------------| 3e | | | | | | | | | CHA: | | 80.00 | --- | 25.00 | 30.00 Chewacla----------------| 4w | | | | Cartecay----------------| 5w | | | | Toccoa------------------| 3w | | | | | | | | | DaB: | | 95.00 | 750.00 | 35.00 | 45.00 Davidson----------------| 2e | | | | | | | | | DAM: | | --- | --- | --- | --- Dam---------------------| --- | | | | | | | | | DdD3: | | 70.00 | --- | 30.00 | --- Davidson----------------| 4e | | | | | | | | | DeB: | | 80.00 | 900.00 | 30.00 | 45.00 Decatur-----------------| 2e | | | | | | | | | EnB: | | 70.00 | 900.00 | 25.00 | 30.00 Enon--------------------| 2e | | | | Wynott------------------| 3e | | | | | | | | | GrD: | | 75.00 | 400.00 | 25.00 | 35.00 Grover------------------| 4e | | | | | | | | | HdB: | | 90.00 | 650.00 | 35.00 | 45.00 Hard Labor--------------| 2e | | | | | | | | | HdC: | | 80.00 | 600.00 | 30.00 | 40.00 Hard Labor--------------| 3e | | | | | | | | | 174 Soil Survey Table 5a.—Land Capability Class and Nonirrigated Yields by Map Unit (Part 1)—Continued __________________________________________________________________________________________ | | | | | Map symbol | Land | Corn |Cotton lint | Soybeans | Wheat and soil name | capability | | | | __________________________________________________________________________________________ | | Bu | Lbs | Bu | Bu | | | | | LcB: | | 75.00 | 800.00 | 30.00 | 45.00 Locust------------------| 2e | | | | | | | | | Download 4.87 Kb. 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