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News from the College of Agricultural and Environmental Sciences

Poison ivy in a forested area. CAES News
Poison Ivy 07/18/24 Mark Czarnota
Poison ivy is a common poisonous plant in Georgia and is infamous for causing allergic reactions for as many as 50 million Americans annually. To manage it effectively and safely, it's important to understand its traits and use the right control methods to deal with this troublesome plant. Mark Czarnota, an associate professor in the University of Georgia Department of Horticulture, provides helpful tips to distinguish poison ivy from common look-alikes and shares several ways to control the irritating plant.
"Palmetto bug" is a regional term used to describe several species of cockroaches, including the smokybrown cockroach (Periplaneta fuliginosa). CAES News
Roach or Palmetto Bug 07/10/24 Maria M. Lameiras
It’s summertime, and there are a few things residents of the Deep South can count on this time of year — heat, humidity and insects. Fireflies and cicadas are popular topics these days, but of all the creeping, crawling, buzzing creatures that bug us, one is met with near-universal revulsion — the cockroach. Whether you’re new to the South or a lifelong resident, you’ve likely run into one of the several species of cockroaches that are common in the region.
Fall armyworm larvae have a white inverted Y-shaped mark on the front of their dark head. They are smooth skinned and vary in color from light tan or green to nearly black, with three yellowish-white hairlines down the back. The larval stage lasts from three to four weeks and can be damaging to turfgrass and crops. (Photo by USDA Agricultural Research Service Photo Unit, Bugwood.org) CAES News
Fall armyworms 09/02/22 William G. Tyson
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.
Allison Johnson is the new new Pesticide Safety Education Program Coordinator for UGA Cooperative Extension. CAES News
Safety Educator 08/17/22 Emily Cabrera
University of Georgia alumnus Allison Johnson joined UGA Cooperative Extension as the new Pesticide Safety Education Program (PSEP) coordinator on Aug. 1. The public service position is responsible for creating educational resources and training materials to help private and commercial pesticide applicators obtain proper certifications for the safe and effective use of pesticides throughout the state.
Entomosporium leaf spot on Photinia (Red Tip). Small reddish leaf spots appear initially. As spots age, center is grayish with a dark purple border. Leaf spots may coalesce causing severe leaf blight. Severely infected leaves drop prematurely. Over time severely infected plants die. Infection is favored by poor air circulation and prolonged periods of leaf wetness. CAES News
Leaf spot disease 09/20/21 Paul Pugliese
Excessive rain signals another a bad year for leaf spot diseases on landscape trees and shrubs. The leaf spotting that affects pear trees, including both edible pears and ornamental Bradford types, is caused by a fungal disease known as Entomosporium leaf spot. This disease also affects related shrubs such as Indian hawthorn and red tip photinia.
Paper wasps gather fibers from dead wood and plant stems, which they mix with saliva and use to construct nests resembling gray or brown papery material. CAES News
Bug Lighting 09/15/21 Paul Pugliese
Late summer is a good time to observe many types of insects buzzing around homes and gardens. As we approach fall, the local populations of many types of insects begin to reach their peak.
Late summer is the right time to prepare soil for September to October plantings of cool-season crops such as cabbage, broccoli, cauliflower, collards, kale, Swiss chard and Brussels sprouts. CAES News
Winter Garden Prep 08/12/21 Bob Westerfield
The end of summer into early fall tends to be the hottest time of the year in the state of Georgia. Many of us are about tired of laboring in our summer gardens, and the heat, humidity, and disease and insect pressure have certainly taken their toll on our summer crops. However, for those of us who still have the gardening itch, the last weeks of summer are the ideal time to prepare your garden for winter vegetables.
Common seasonal pests like (clockwise from top right) fire ants, houseflies, brown marmorated stink bugs and mosquitos (shown in standing water as larvae) can be controlled with simple tips from UGA Cooperative Extension. CAES News
Summer Pests 07/14/21 Alicia Holloway
As a University of Georgia Cooperative Extension agent, I see a lot of insects. People leave jars of them on my desk, send me photos or call me out to their gardens to identify them and give control recommendations.
Mosquito control is a five-step process that includes education, surveillance, source reduction, larviciding and adulticiding. (Photo by David Cappaert, Bugwood.org) CAES News
Managing Mosquitoes 06/24/21 James Murphy
With summer and the first tropical storm of the season arriving simultaneously this year, we're getting warm, wet weather at a time when more folks are spending time outside. This combination is sure to signal a rise in mosquito interactions, making it a perfect time to think about mosquito control around your home and community.
When using pesticides, remember that the safe and legal use of pesticides requires that the entire label be followed exactly. Contact your local Extension agent if you're unsure about a product. CAES News
Stop, Read, Apply 06/22/21 James Morgan
As we head into summer, we start to see problems with weeds, diseases and insects in the landscape and around vegetable gardens. Some of these pest problems can be solved without the use of chemicals, but if the pest population reaches damaging levels, using pesticides may be warranted. Remember that using pesticides is safe and legal but requires reading and following label directions in their entirety.