Agriculture: Energy & Environmental Technology [§
Texas Legacy site hosts a variety of educational curricula, lesson
plans, keys and ideas, and supporting media, including video,
databases, transcripts and other material. Below you can find
the TEKS Agriculture standards for Energy and
Environmental Technology, particularly Soil Erosion
as described in section
119.22(c)(8), with relevant
activities drawn from this archive.
discusses methods of controlling soil erosion:
Excerpts of TEKS Text
(A) identify sources and types of erosion;
TexasLegacy.org site includes various resources on soil erosion,
both historic and current, with coverage of erosion sources,
types, effects and control methods.
Erosion can occur because of natural causes such as wind
and water, but often can be accelerated and made more severe
because of agricultural practices that expose, compact
and kill the soil. For more examples, please search the
for such terms as "soil" and "erosion".
(B) list harmful effects of erosion;
TexasLegacy.org narrators see the subtle yet debilitating
effects of erosion, and can share their insights with students.
While millions of tons of soils are lost to erosion, often it is
gradual and not obvious. However, one clear and dramatic
sign was the Dust Bowl of the 1930s and 1950s. Here you
can watch Lubbock singer/songwriter
Andy Wilkinson remember how it was to live through the
blowing dust of the 50s.
Another manifest sign of soil erosion is the 7000 square-mile
Dead Zone that extends from the mouth of the Mississippi far
into the Gulf of Mexico. This zone contains sediment and
assorted chemicals that have washed off farms and streets
throughout the Midwest. Please read as coastal advocate
Sharron Stewart and shrimper
Deyaun Boudreaux discuss the Dead Zone's causes and
(D) list erosion control methods and programs.
Numerous farmers and agricultural experts in the TexasLegacy.org
archive offer ideas and practical solutions for addressing
Carol Ann Sayle, and Albany, Oklahoma rancher,
Walt Davis stress the importance of caring for the soil,
of focusing on its health above produce or livestock production.
No-till cultivation and contour plowing have long been macro,
large-scale solutions to keeping soil in farmfields. These
ideas extend to avoiding clearcutting, skidding, compacting and
rootplowing in silviculture too, as pointed out by Longview
Richard LeTourneau and Nacogdoches forest advocate,
experts now urge us to look at the micro level. For
example, San Antonio agricultural supplier,
Ruth Lofgren recommend that we become more aware of the
microbial life of the soil, which supports its fertility
and tilth, but which is also very vulnerable to compaction and
Some consultants have advised controlling erosion and improving
soil fertility by applying sludge to fields. Others
have resisted the ideas due to concerns about spreading
pathogens and heavy metals. Decide for yourself by reading
the transcripts of interviews with
Bill Addington, who opposed a sludge operation in
Sierra Blanca, or with
Ken Zarker, an Austin agency official who regulated
sludge haulers and appliers.