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Longview High School Holds Forestry Awareness Tour

Longview High School Holds Forestry Awareness Tour

Story by Dennis Brezina

Dennis Brezina, resource soil scientist in Bryan, took part in a Forestry Awareness Tour in Longview, Texas, recently. The tour was sponsored by the Texas Forest Service and the Eastman Chemical Company and included 99 freshmen high school students and 15 teachers from Longview High School.

Brezina discussed the definition of soil, soil-forming factors and the components of soil. The students were able to texture samples of sand, silt, clay and loam, and were also presented a soil erosion demonstration using a rainfall simulator. The students were able to view the differences in sediment loss from a cultivated field, a St. Augustine grass yard, a native pasture and a concrete parking lot. Drops of food coloring were placed on the �parking lot� to simulate oil, anti-freeze, gasoline and transmission fluid.
Students were able to get an idea of the methods used to map soils by viewing aerial images through a stereoscope. They were taught how soils generally conform to different landscapes, and used some of the equipment to sample soils, such as a soils auger and the power soil probe mounted on the pickup.

Brezina demonstrating soil texture to Longview High School students at the Forestry Awareness Tour.

Brezina demonstrating soil erosion.

Brezina demonstrating soil texture to Longview High School students at the Forestry Awareness Tour.

Brezina demonstrating soil erosion.

Student viewing aerial imagery through a stereoscope.  

Student viewing aerial imagery through a stereoscope.