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Houston black soil extends over 1,500,000 acres (6,100 km 2) of the Texas blackland prairies and is the Texas state soil. The series is composed of expansive clays and is considered one of the classic vertisols. [1] Houston black soils are used extensively for grain sorghum, cotton, corn, small grain, and
Texas A&M research found that it did a better job of keeping clay soils “opened up” than sand ever did. Nurseries sell it. Ask for it simply as “expanded shale.” Organic matter decays. It ...
Our native soils locally are mostly pH 7.5 and higher, which means we should avoid large trees (East Texas pines, pin oaks, sweet gums, etc.) that require copious amounts of iron.
The Interstate Highways have replaced several portions of the U.S. Highway network in Texas and as a result, they have been removed from the State Highway System. Several examples include US 81 from Fort Worth to Laredo in favor of I-35 , US 75 from Dallas to Galveston in favor of I-45 , and US 80 from Dallas to El Paso in favor of I-10 and I-20 .
The Texas State Highway system was established in 1917 to create a structured network of roads that would enhance connectivity and support economic development across the state. The initial system included 22 state highways, many of which followed pre-existing trails and trade routes.
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A soil family category is a group of soils within a subgroup and describes the physical and chemical properties which affect the response of soil to agricultural management and engineering applications. The principal characteristics used to differentiate soil families include texture, mineralogy, pH, permeability, structure, consistency, the ...
The AASHTO Soil Classification System was developed by the American Association of State Highway and Transportation Officials, and is used as a guide for the classification of soils and soil-aggregate mixtures for highway construction purposes.