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Provides comprehensive sweet orange scab information including: what to look for, how to prevent this disease and how it is treated. Also provides image gallery and information how to report signs of citrus disease. And provides control information including: current status and regulatory information. 

ARS works with foreign scientists to prevent overseas diseases from spreading to the United States. This collaboration specifically targets research that cannot be conducted in the U.S., either because a disease does not exist here or the expertise in a pathogen resides overseas. Of particular concern are emerging diseases that may spread from animals to infect humans.

Provides listing of Technical Guides (TGs). Various guides are relevant to pest managment and invasive species issues.

Tellus, is the new digital platform to showcase USDA, ARS's revolutionary research, which was publicly launched February 11, 2019. Tellus is Latin for earth, and its content is designed to reach our customers wherever they are—whether in the United States or across the globe, on desktop or mobile. Tellus is replacing its legacy AgResearch online magazine (includes archives from 1995-2018).

Tellus includes content covering a variety of topics from field to fork, ranging from human nutrition and food safety, to crop and animal production. In addition to informative stories about ARS research, Tellus includes new products like featured photos, infographics, photo essays and videos.

The American chestnut (Castanea dentata) was a keystone tree species in the eastern U.S., once found in the forest overstory from Maine to Georgia. The loss of the "mighty giant" to chestnut blight (Cryphonectria parasitica), a fungal disease accidentally imported from Asia in the early 1900s, reduced the once dominant chestnuts to remnant understory sprouts. After eight years of field testing, USDA Forest Service research forester Stacy Clark and her colleagues evaluated blight resistance and survival of the backcross-generation American chestnut seedlings, known as BC3F3. Their results were published in Forest Ecology and Management.

Ticks may not seem dangerous, but they can cause disease and even death in livestock and pets. There are hundreds of tick species in the world, about 10 percent of these species are found in the United States. Now there’s one more to watch out for. In 2017, the U.S. Department of Agriculture (USDA) confirmed the presence of the Asian longhorned tick (Haemaphysalis longicornis). It probably arrived in the United States in or before 2010. Exactly how or when is unknown, but one thing is certain: it may have entered on domestic pets, horses, livestock or people. While we know the impact of this tick in other parts of the world, we are still studying how they may affect U.S. agriculture, and our environment.
See related resource: Data Visualization Tools to explore plant and animal health management data and interactive story maps

Electronic noses are sensitive to a vast suite of volatile organic compounds that every living organism emits. A new USDA Forest Service study shows that e-noses can detect emerald ash borer (Agrilus planipennis) larvae lurking under the bark – an early, noninvasive detection method. 

An interactive story map of the USDA’s history of combating the infestation and the continuing efforts to protect ash trees in the U.S.
See related resource: Data Visualization Tools to explore plant and animal health management data and interactive story maps

New website delivers spectacular images and details of some of the world's bees. ARS scientists need your help in monitoring and protecting our important pollinators. The Exotic Bee ID website, designed and developed as a screening aid to support identification of non-native bees, offers spectacular views of some of our most important and not so important pollinators with stunning clarity. Watch the  video to learn more about this new tool.

Exotic Bee ID was designed and developed as an interactive screening aid to help those that monitor and intercept non-native bees in the U.S. Theintention is to help reduce the loss of valuable native pollinators through early detection of possible invasives.

From the series Invasive Species in South Florida.
See also: So What’s in a Burmese Python Anyway?

How can an insect that is smaller than a penny cause so much ecological, economic, and cultural devastation? The emerald ash borer, an invasive beetle native to Asia, is one of the most destructive invasive species in North America. These tiny pests killed tens of millions of ash trees in the northeast – and continue to this day.

In Maine, a coalition of Indigenous and non-Indigenous researchers, tribal members, state and federal foresters, conservation groups, and local communities have been working for the past twenty years to prepare for the onset of emerald ash borer in northeastern forests. The group, called the Ash Protection Collaboration Across Wabanakik, is focused on identifying research-informed strategies to protect the future of ash trees.

USDA Forest Service scientists are exploring the impacts of invasive species in forests and rangelands of the United States and developing early intervention strategies that land managers can take as well as strategies for restoring impacted landscapes.

The fungus behind white-nose syndrome, a disease that has devastated bat populations in North America, may have an Achilles' heel: UV light, according to a study conducted by the Forest Service and its partners.

"White-nose syndrome is the single biggest threat to many North American bat species and one of the most pressing conservation challenges facing America’s wildlife today. Investing in defeating WNS must be a priority, and the results from this study and contributing research give us hope that we can develop the tools to more effectively manage the fungus that causes the disease."

Tegus were first reported in the Miami-Dade area about a decade ago as escapees from the pet trade. Since then, over 6,000 tegus have been removed from Dade County. What is most troubling is that the number of tegus seems to be increasing exponentially. Less than 200 tegus were trapped in 2012, but over 1,000 were trapped in 2017. To make matters worse, the areas where they are being trapped are getting closer and closer to the park. From the series Invasive Species in South Florida.

Nonnative tree species are gaining a foothold in forest ecosystems. These trees compete with native species for resources, sunlight, and space. Tree of heaven and Chinese tallow tree are the most invasive tree species in the South, according to a recent study which uses Forest Inventory & Analysis data to create an indicator of nonnative tree regeneration success and can help prioritize the species and locations for treatment. 

Noxious weeds plague farmers and ranchers, push out native species, and cause both economic and ecological damage. Synthetic herbicides are often used to control the spread of these plants, however, some species have developed a resistance to these chemicals.

New techniques use radiation to eliminate dangerous mosquitoes. The Aedes aegypti mosquito is notorious for spreading dengue virus, yellow fever virus, chikungunya virus, and Zika virus, among other ailments. While many mosquitoes do not feed on people, or even domestic animals, this mosquito targets humans causing disease to millions of people throughout the world. ARS researchers with scientists from the University of Florida have developed a new technique for using radiation to control mosquito populations.

See also: Fact Sheet: Preparing for and Responding to the Zika Virus at Home and Abroad (Feb 8, 2016)