Browse Plant Pests and Diseases Stories

A multidisciplinary team of UGA researchers aims to enhance the competitiveness of Vidalia onion growers in Georgia by providing them with the ability to confidently detect onion diseases early, enabling them to make management decisions on their crop at a critical time. These abilities, researchers say, should result in increased yield and quality of marketable onions and an overall increase in efficiency and productivity.

The spotted lanternfly (Lycorma delicatula), an invasive insect pest that first arrived in Pennsylvania in 2014 and has since spread to 16 additional states in the Eastern U.S., has state governments urging residents to be on the lookout and to use caution when moving firewood. The insect’s preference for feeding on the tree of heaven (Ailanthus altissima) — another invasive species — has led to significant pest reservoirs, affecting vineyards and other agricultural sectors, including hardwoods and other ornamental and fruiting trees.

A multidisciplinary team of researchers at the University of Georgia College of Agricultural and Environmental Sciences recently renewed a $4 million contract with the U.S. Department of Agriculture Agricultural Research Service to build upon their previous work to develop targeted interventions to mitigate the impact of silverleaf whiteflies on vegetable production in the Southeast. UGA entomologist Allen Moore leads the research team in collaboration with USDA ARS in Charleston, South Carolina.

Seven East Coast states harvested nearly 102,000 acres of watermelon and cucumber in 2019 and 2020, representing more than 62% ($410 million) and 45% ($180 million) of the U.S. production of the two crops, respectively. Growers of cucurbits — which include melons, pumpkin, squash and cucumbers — face numerous challenges in production, leading to decreased profitability and less produce on grocery shelves.

Plant-parasitic nematodes cause billions of dollars in annual yield losses and represent a major impediment to meeting the challenge of feeding an ever-growing global population. One plant-parasitic nematode, the soybean cyst nematode, has been a long-standing focus of research and innovation in the Melissa G. Mitchum Lab at the University of Georgia College of Agricultural and Environmental Sciences.

The first cases of southern corn rust for the 2023 growing season were discovered on Tuesday, June 20 and Wednesday June 21 in Clinch and Grady Counties , along the Georgia-Florida line. University of Georgia Extension experts are encouraging producers to be diligent in scouting for the fast-spreading disease among their corn crops.

A multidisciplinary team of University of Georgia agriculture experts are working to determine causes and solutions to postharvest quality problems that have hit Georgia’s blueberry growers hard in recent seasons. Funded by the College of Agricultural and Environmental Sciences Office of Research and UGA Cooperative Extension, the project will address “major issues” with fruit quality, particularly in rabbiteye blueberries.

Over the past couple of weeks, I have received numerous calls from curious homeowners and frustrated farmers regarding the dreaded fall armyworm. Damage to established turf is most often aesthetic. However, newly planted sod or sprigs can be severely damaged or even killed by fall armyworm feeding.

The peanut burrower bug is a tricky pest for Georgia’s peanut producers. Not only is an infestation invisible in a field from above the ground, damage done by the bugs’ piercing mouthparts can only be detected after peanuts are harvested and sent for processing, resulting in unexpected revenue loss.

In a quiet field of abandoned blueberries and shrubby brush in south Georgia, Cera Jones released hundreds of tiny parasitoid wasps into the thicket and watched them fly away, following their natural instinct in search of a host to incubate their predatory progeny.