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Science
Advisory Panel (SAP)
Testimony of Mr. Dee Vaughan
Board Member, National Corn Growers Association
October 20, 2000
I appreciate the
opportunity to address all of you on the re-assessment of the risks
and benefits of existing Bacillus thurigiensis (Bt) plant pesticides.
My name is Dee Vaughan. I farm corn, wheat, sorghum, and soybeans in
Moore County, located in the northern panhandle of Texas. I currently
serve on the Board of Directors of the National Corn Growers Association
(NCGA) representing 30,000 corn growers in 26 states.
The climate, culture
and pest pressure in our area is very similar to that in southwest Kansas,
the Oklahoma Panhandle, and Southeast Colorado. Our region typically
experiences mild dry winters with temperatures between 20 and 50 degrees
and dry summers with average temperatures around 95 degrees. Our insect
pressure comes from the Western Corn Rootworm, Southwestern Corn Borer,
European Corn Borer, and spider mites, also referred to as grass mites.
Reduced Pesticide
Use
I have been planting Bt corn to fight corn borer pressure since 1998,
as have many of my neighbors. My region is very reflective of others
throughout the country in that the use of this innovative technology
has steadily increased since its introduction.
Before introduction
of this technology, I would use a crop consultant to scout fields for
insects on my operation. Once a problem area was been identified, the
necessary chemical applications are applied based on triggering economic
thresholds established over the years by the Texas Agricultural Extension
Service.
I would typically
treat approximately 50% of my corn acres for first generation Southwestern
corn borer. The second generation of Southwestern corn borer along with
European corn borer required virtually 100% of corn acres to be treated.
Mites were typically treated with this second borer treatment.
By using the Bt
corn technology, we have eliminated all corn borer treatments.
We have also noted a marked decrease in corn worm feeding even though
the current Bt events do not claim to provide this benefit.
In 1999, I did
not make a single pesticide application to control corn borers or mites.
In 23 years of farming that is the only year I have not treated my corn
for these two pests. By not treating corn borer early in the growing
season, we retained beneficial insects that prey on mites. I should
note that prior to Bt corn being integrated into my farming practices,
the combined insect pressure of borers and mites almost always justified
chemical treatment.
Based on my personal
experiences with this technology, I disagree with your assessment that
Bt corn has not resulted in a reduction in chemical use. Especially
in the 1999 growing season, my operation serves as a testament to the
fact that Bt corn technology results in reduced chemical use.
I would suggest
that the EPA look more specifically at regions, maybe even on a county-by-county
basis, to determine the total effect of Bt corn and chemical use. Numerous
studies have verified and with time, many more will show that even in
Bt corn, notable measures of reduced pesticide use have been found.
A September 2000
report published by USDA's Economic Research Service (ERS) offers several
perspectives on estimating changes in pesticide use associated with
adoption of these crops, while admitting the difficulty of making such
a measurement. In the models used by these researchers, it was estimated
that there was an 8.2 million pound total pesticide use between 1997
and 1998 as a result of the adoption of biotechnology, including a reduction
cause by Bt corn use (report included with testimony).
By reducing my chemical
inputs, I have become an even better steward of the soil, surface water,
groundwater, and air and I have made a dramatic impact on my bottom-line.
By eliminating pesticide
treatments for first generation Southwestern Corn Borer, I have seen
an approximate savings of $13.00 per non-treated acres. The elimination
of the second treatment for corn borers and mites has yielded me an
approximate savings of $26.00 per non-treated acre. Its important to
note that these figures do not include the labor and fuel costs associated
with additional chemical applications.
Increase Yields
On my farm, we have experienced a consistent eight to ten bushel per
acre increase in yield by using Bt corn hybrids over non-Bt hybrids.
That increase can be attributed to a combination of better genetics
and less pest damage. In testimony presented to the House Science Committee
by Leonard Gianessi, Senior Research Associate for the National Center
for Food and Agricultural Policy, it was stated that in 1997, side-by-side
comparisons conducted by several companies and universities showed that
the average yield for Bt corn was 11.7 bushels per acre higher than
for conventional corn. In 1998, the average increase in yield was 4
bushels per acre.
The additional yield
on my farm (8 bushels) multiplied by the price of corn I am receiving
($2.50) has netted my operation $16.00 per acre (this calculation factors
in a 20% required refuge).
Healthier Corn
Bt modified corn has also been found to be healthier. According to USDA's
Agricultural Research Service and plant pathologists at Iowa State University,
Bt corn modified to prevent damage by the corn borer may also be less
likely to harbor toxins. These toxins are both a human health issue
and an export issue.
Other Benefits
Although this SAP is specifically investigating the risks and benefits
of the Bt technology, I would like to briefly discuss another issue
of biotechnology that members of the National Corn Growers Association
is very interested in. This aspect of biotechnology, we believe, will
only completely develop if the safe Bt products on the market today
are made available in the future.
In addition to meeting
the needs for food, feed and fiber, biotechnology allows us to provide
raw materials for industrial uses (i.e., chemical feedstocks). Currently,
the majority of consumer goods are made from hydrocarbons produced by
the petrochemical industry. Because of the finite supply of oil and
the U.S. reliance on imports for more than 50 percent of our oil needs,
it is important for us to begin supplementing U.S. oil with renewable
resources.
Crops, trees and
agricultural wastes can be used as feedstocks to produce a wide range
of everyday consumer goods, such as plastics, paints and adhesives.
The utilization of renewable resources will help to cut costs, decrease
our reliance on oil imports, reduce greenhouse gas emissions, increase
recycling opportunities and create new, world-class industries here
at home. Biotechnology will be critical to this effort, as it will allow
the manipulation of plant constituents and enzyme extraction systems
that will provide desirable feedstocks.
Plant genomics and
biotechnology will help scientists, geneticists and plant breeders identify
and utilize genes from corn and other economically significant crops
that control important traits such as nutritional value, stress tolerance
and resistance to pests. The far-reaching benefits of biotechnology
include:
- revitalization
of rural America due to a more robust agricultural sector;
- expansion of
plant-based renewable resources for energy and raw materials;
- significant reductions
in crop losses and reliance on pesticides through improved biological
methods to control and alleviate serious industrial threats and targeted
pests;
- improved yields
and reduced crop losses caused by adverse environmental conditions
such as heat, drought and salt
- improved nitrogen-use
efficiency, thereby limiting the potential for nitrates in the water
supply;
- reduced environmental
problems confronted by livestock producers, such as modifying the
digestibility of phosphorous in feed corn to reduce the amount of
phosphorous that enters our ground water;
- improved animal
nutrition, leading to healthier meat and increased meat productivity
- development of
tailored hybrids with valuable specialty starches, oils and protein
content; and
- reduced worldwide
malnutrition due to higher yielding and more nutritious crops.
Genomics and biotechnology
are critical to the long-term viability of U.S. agriculture. To compete
in the global market, the U.S. must continually strive to efficiently
and economically improve production capabilities - to maximize yield
and combat serious threats from disease, pests, and climate changes
- without harming the environment. Genomics research and the application
of modern biotechnology hold the key to achieving this goal.
Conclusion
The cost to my operation of including the use of biotechnology on my
operation is approximately $10.00 per acre. The benefit, again, not
including fuel and labor costs, is between $19 and $45 per Bt corn acre.
Higher yields and
less chemical application, coupled with the health and safety of the
environment that the Bt technology provides is indisputable. I strongly
urge members of the SAP to look at all benefits society as a whole is
experiencing today, as well as the benefits to come when making final
decisions on this technology.
I appreciate the
opportunity to present the views of the National Corn Growers Association
- especially given how important biotechnology is to all of us. I would
be happy to answer any questions.
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