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Below you'll see everything we could locate for your search of “Dewdney”
Freeze damage to Florida citrus could lead to a buildup in certain diseases. One, in particular, is a major threat, believes Megan Dewdney, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor in plant pathology and Extension specialist. “Our big concern in terms of foliar problems is going to be melanose. Just as a reminder, melanose produces …
By Megan Dewdney The recent freeze events of the last few weeks have scrambled the plans of citrus growers. It will take several weeks to months to understand the extent of the damage caused by the unusually cold weather. MELANOSE There is at least one disease that is highly likely to be worse than in other years. Melanose is likely …
Plant pathologist Megan Dewdney on Nov. 20 presented updates on greasy spot, greasy-green, citrus black spot (CBS) and phytophthora brown rot. Dewdney is a University of Florida Institute of Food and Agricultural Sciences associate professor and Extension specialist at the Citrus Research and Education Center. GREASY SPOT AND GREASY-GREEN Dewdney reported that control measures for greasy spot, caused by the …
Citrus under protective screen (CUPS) continues to grow in popularity with about 1,500 acres now planted in Florida. The October All In For Citrus podcast covers CUPS and some of the challenges growers can face with the system. Jerry Mixon, a CUPS grower, discusses why he wanted to try the system and some of the challenges he has faced with …
The October All In For Citrus podcast features citrus under protective screen (CUPS). Over the past decade, the practice has grown in popularity due to its ability to exclude the Asian citrus psyllid and huanglongbing (HLB) disease. Roughly 1,500 acres of citrus are grown under screen in Florida with more acreage under development. Lauren Diepenbrock, associate professor of entomology at …
By Megan Dewdney Sometimes there is an unfortunate coincidence between the timing of fruit changing color and rain events. This can set up a situation where brown rot occurs unexpectedly and growers need to stop the disease after it has begun. CONTROL OPTIONS By this time of year, the traditional brown rot control measures are less effective. These are primarily …
A citrus disorder called greasy green has plagued Florida grapefruit producers for several years, causing a significant reduction in profits. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Associate Professor and Extension Specialist Megan Dewdney discussed the disorder and its management at the Citrus & Specialty Crop Expo in August. Dewdney works at the UF/IFAS Citrus Research and …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) debuted a new publication at the Citrus & Specialty Crop Expo. The UF/IFAS Citrus Magazine is an Extension initiative to deliver Florida’s geographically dispersed citrus research to growers. “You can expect three editions per year, featuring articles written by UF/IFAS citrus scientists and Extension faculty across the state,” said …
By Megan Dewdney The Florida rains have finally come this summer, just in time for early-season fruit to start the maturation process. This means there is some risk of brown rot in early sweet oranges and grapefruit. Much of Florida has been getting summer storms, wetting the soil. While this is excellent in general, the downside is that it allows …
Three University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers recently issued the document Suggested Use Pattern of Injectable Antimicrobials for Huanglongbing (HLB) Management. The authors are Ute Albrecht, associate professor of horticulture; Ozgur Batuman, associate professor of plant pathology; and Megan Dewdney, associate professor of plant pathology. The antimicrobials for Florida citrus are ReMedium TI and Rectify; …
In the June All In For Citrus podcast, Michael Rogers gives an update on some of the activities keeping University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers busy this summer. Rogers is the director of the UF/IFAS Citrus Research and Education Center in Lake Alfred. One of their big projects is helping to coordinate the citrus seminars …
As the rainy season in Florida is set to begin, we caught up with Megan Dewdney to discuss citrus canker and other disease issues. Dewdney is a plant pathologist with the University of Florida Institute of Food and Agricultural Sciences. Q: How has the prevalence of citrus canker been in Florida in the past year or so? A: Dewdney: Citrus …
The June issue of Specialty Crop Grower magazine honors the winner of the 2025 Citrus Achievement Award. Ben Albritton, this year’s recipient, is a fourth-generation citrus grower and Florida politician. Learn all about his career and accomplishments in the cover story. Don’t miss the digital edition of the magazine to see an exclusive video interview. Albritton and Specialty Crop Grower …
By Megan Dewdney Every summer, a low rumble about algal spot reaches my ears. And every year, someone discovers it in their Florida grove for the first time. While this is a disease that is not always at the top of mind for growers, when you see it for the first time, it can be dramatic. DISEASE SYMPTOMS Algal spot …
By Megan Dewdney Citrus canker can contribute significantly to the loss of fruit prior to harvest. As bloom begins in Florida, it is time to finalize management plans for foliar diseases. For many growers, very aggressive canker management programs are no longer a possibility, however, some management is important. Citrus canker susceptibility of young fruitlets usually starts at the end …
By Megan Dewdney Despite being in a transition from a La Niña to a neutral El Niño Southern Oscillation phase, Florida has not had warmer than average temperatures in the last two weeks from March 3. Looking at historical trends, temperatures for the last two weeks of February were in the normal range for this time of year. When looking …
By Megan Dewdney As I write this article in January 2025, the world is a chilly place, and it is hard to imagine warm and wet weather in Florida. The predicted weather pattern from now until flowering is moving from La Niña toward neutral. This is predicted to bring above-average spring temperatures with reduced rainfall. This is a hopeful sign …
The Citrus Industry section in the March issue of Specialty Crop Grower magazine offers timely information citrus growers won’t want to miss. Now is the time for Florida citrus producers to begin thinking about their disease management programs for the season. Megan Dewdney, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist, offers a foliar disease outlook …
By Megan Dewdney Spring is the time to start thinking about foliar disease management in Florida. Depending on the type of citrus being produced and the market destination, different diseases will be important. POSTBLOOM FRUIT DROP The disease that affects all citrus, particularly oranges, is postbloom fruit drop (PFD). This disease is highly dependent on the weather during bloom. Currently, …
Hurricanes bring immediate tree damage from high winds and torrential rainfall, but storms also can lay the groundwork for citrus disease problems. Soon after Hurricane Milton passed through citrus-growing regions, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a webinar that covered various topics including post-storm disease management. CANKER Megan Dewdney, UF/IFAS associate professor of plant …
