Results:
Before & After
Biologically based Integrated Pest Management combines ecologically sound strategies
with other tools to provide better control and more flexibility than can be achieved using
any single tool alone. It is by far the best approach. But in the end, the most important
question is does it work. Absolutely! Just take a look at these before and after pictures
taken from different types of ecosystems. These are good examples of the kind of results
you can achieve.
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| Sentinel Butte, ND | |
| Before 1998 | After 2000 |
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| The combination of biological control and multi-species
grazing at this TEAM Leafy Spurge demonstration site in western North Dakota has worked
extremely well. In just three years, the cattle-sheep-flea beetle combination reduced
spurge densities by 31-50 percent, and native vegetation and desirable grasses are
reestablishing in areas formerly dominated by spurge. Based on previous research, even
greater reductions in spurge densities can be expected in the fourth and fifth years
(i.e., 2001 and 2002) of the demonstration. In addition, the performance of both cattle
and sheep have been enhanced. The demonstration shows the economic and environmental
advantages offered by combining the two biologically based IPM strategies. Photo by Jack Dahl, NDSU-Hettinger Research Extension Center |
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| Devil's Tower, WY | |
| Before 1998 | After 2000 |
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| These two sites, located five miles west of Devils
Tower National Monument, are part of a TEAM Leafy Spurge project to quantify flea beetle
establishment, population expansion and the resultant impact on leafy spurge. Each site
was inventoried -- i.e., extensive data regarding soil type, moisture, topography, species
composition, etc. were collected -- prior to being seeded with 6,000 Aphthona flea
beetles (3,000 A. lacertosa and 3,000 A. nigriscutis) in 1998. TLS data
collected in the summer of 2000 indicates that 95 percent of the flea beetle releases in
the area successfully established populations (93 sites total), and that average leafy
spurge foliar cover declined from 47.5 to 11.9 percent (average from 93 sites). This
upland site is relatively dry, at an approximate elevation of 5,500 feet. Photo by Amy Parker, University of Wyoming |
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| Fallon County, MT | |
| Before 1992 | After 1995 |
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| Cattle rancher Glenn Rugg used Tordon for 40 years before
experimenting with leafy spurge flea beetles in the early 1990s. He's now a staunch
advocate of biocontrol. Photo by Neal Spencer, USDA-ARS Northern Plains Agricultural Research Laboratory |
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