Citrus canker has been detected in Alabama. Plant health officials have confirmed the plant disease in a residential area of Baldwin County, Alabama, which is bordered by the Gulf of Mexico and state of Florida. This is the first detection of citrus canker in Alabama. It can affect all citrus species. Though the disease is harmless to humans, it can …
On Alert: Recent Rains Increasing Disease Pressure in Alabama Vegetables
By Clint Thompson Alabama vegetable producers need to stay vigilant with their fungicide spray programs. With the wet summer across the state, disease pressure is building in vegetable crops, said Ed Sikora, professor and Extension plant pathologist in the Department of Entomology and Plant Pathology at Auburn University. “We’ve been getting hit hard with bacterial spot (in tomatoes) as you …
Rain, Rain Go Away: Wet Summer Impacting Pecan Trees
By Clint Thompson A wet summer only got wetter this week for parts of Southeast Georgia in the path of Tropical Storm Elsa. While the steady rainfall in June and so far in July has replenished the moisture in the soil, it has had a negative impact on the state’s pecan trees. University of Georgia Cooperative Extension pecan specialist Lenny …
Cause for Concern: Blueberry Producers Be Wary of Algal Stem Blotch Disease
By Clint Thompson Florida blueberry producers need to stay vigilant in maintaining their blueberry bushes for the upcoming year, says Phil Harmon, professor and Extension plant pathologist at the University of Florida. One of the key diseases that growers need to protect against is algal stem blotch. It’s not a typical fungus disease so normal synthetic fungicides are not effective. …
Starting Off: Pecan Variety Selection Essential to Long-Term Sustainability
By Clint Thompson Sustainable pecan production starts before the producer plants their tree. The right variety selection could lead to reduced chemical sprays for scab disease, which could save the producer time and money over the course of their pecan trees. Picking varieties like Zinner and Avalon could have positive ripple effects for growers trying to overcome high input costs. …
Laurel Wilt Disease: Major Problem Impacting Florida’s Avocado Industry
By Clint Thompson The largest produced tropical fruit in Florida is enduring a disease that is having similar impact that Greening is having on the state’s citrus industry. Avocados, which are produced on approximately 1,500 acres in South Florida, are being severely impacted by laurel wilt disease. “It seems like as it’s getting worse and worse,” said Alan Chambers, plant …
Downy Mildew Alert: Watermelon Disease Found in Two South Carolina Counties
Downy mildew disease was found on watermelon this week in two South Carolina counties – Allendale and Barnwell – according to The South Carolina Grower. This is especially concerning, since it reduces sugar content once 25% are infected. All watermelons should be sprayed with a fungicide effective against downy mildew. Gavel, Ranman and Elumin are the least expensive fungicide choices. …
Management of Alternaria Blight and Head Rot in Brassica
By Bhabesh Dutta and Aparna Petkar Alternaria blight and head rot (ABHR) of broccoli and other brassicas is caused by several species in the genus Alternaria, including A. brassicicola, A. brassicae and A. raphanin. All these species can cause significant economic losses. These fungi are facultative pathogens that primarily survive in crop debris, although chlamydospores and microsclerotia are known to …
Factors to Consider When Managing Phytophthora Fruit Rot in Watermelons
Increased rainfall means conditions are favorable for the development of phytophthora fruit rot (Pcap) in watermelon, according to University of Georgia Extension Vegetable Blog and Extension plant pathologist Bhabesh Dutta. There are several pre- and post-harvest considerations growers need to be mindful of in protecting their watermelon crop from the disease. Dutta recommends: Avoid harvesting watermelons from low spots in …
Wet Weather Could Lead to Disease Issues in South Carolina
By Clint Thompson Increased rainfall the past couple of weeks in South Carolina means more potential for disease development in crops that are just getting ready for harvest. That is a concern for growers, says Clemson Extension agent Zack Snipes. “We got a bunch (of rain) here in Charleston for sure. We got a bunch the previous week, too. It’s …