Houston Black (soil)
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Houston Black Soil extends over 1,500,000 acres (6,100 km2) of Texas and is the Texas state soil. The Houston Black Soil has expansive clays and are classic vertisols.
Houston Black soils are used extensively for grain sorghum, cotton, corn, small grain, and forage grasses. In their natural state, they support mostly grassland with some elm, hackberry and mesquite trees.[1] [2] The soil also shrinks and swells with variations in how much water it contains.[3] In the USDA taxonomic system it is designated an "Udic Haplusterts".[4]
[edit] See also
[edit] References
- ^ https://soilseries.sc.egov.usda.gov/OSD_Docs/H/HOUSTON_BLACK.html
- ^ "Houston Black: Proposed State Soil for Texas". US Department of Agriculture Natural Resources Conservation Service. http://www.tx.nrcs.usda.gov/soil/statesoil.html. Retrieved 2010-11-11.
- ^ "Houston Black -- Texas State Soil". University of Illinois Urban Resources. http://urbanext.illinois.edu/soil/st_soils/tx_soil.htm. Retrieved 2010-11-11.
- ^ "What on Earth is Houston Black Soil?" (pdf). US Department of Agriculture Natural Resources Conservation Service. February 2003. ftp://ftp-fc.sc.egov.usda.gov/TX/factsheets/fact_houstonsoil.pdf. Retrieved 2010-11-11.
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