Diseases, Disorders & Decay Control
- Postharvest Decay Control Recommendations for Florida Citrus Fruit
Decay of citrus fruit is caused by fungi which grow and develop under hot and wet conditions typical of the Florida climate
- Green Mold
Green mold is caused by the fungus Penicillium digitatum which is ubiquitous to all citrus growing regions
- Blue Mold
Blue mold is caused by the fungus Penicillium italicum, and is a much minor decay in Florida than green mold
- Brown Rot
Brown rot is caused by two species of Phytophthora, P. citrophthora and P. parasitica
- Phomopsis Stem-End Rot
Phomopsis stem-end rot is caused by the fungus Phomopsis citri, and is a decay that becomes more prevalent after the degreening season, when it occurs approximately 10-20 days after harvest
- Chilling Injury of Grapefruit and its Control
"Chilling injury (CI) is a physiological disorder that is occasionally reported on fresh citrus shipments from Florida. It is most often characterized by areas of the peel that collapse and darken to form pits"
- Stem-End Rind Breakdown of Citrus Fruit
"SERB symptoms involve the collapse of rind tissue around the stem end of citrus fruit. The affected area is irregular in shape and becomes dark and sunken"
- Blossom-End Clearing of Grapefruit
"Blossom-end clearing (BEC) is characterized by the translucent, water-soaked appearance of the fruit peel (most commonly at the blossom end) caused by internal bruising and juice leakage from juice vesicles"
- Disease Control for Florida Snap Beans
Snap beans are an important vegetable crop in Florida. They are produced in all regions of the state except the east central areas
- Diseases of Avocado in Florida
In the subtropical environment, where this crop is grown, diseases, especially those incited by plant-parasitic fungi, commonly cause important reductions in yield and quality of avocado fruit
- Downy Mildew of Lettuce
Downy mildew is a serious disease of lettuce that occurs worldwide
- Sclerotinia Diseases of Vegetable and Field Crops in Florida
The fungus, Sclerotinia sclerotiorum, causes a profusion of Sclerotinia diseases on more than 360 different host plant species
- Some Common Diseases of Mango in Florida
The mango tree is a tree fruit well-known and widely consumed throughout the tropical world, but is grown commercially in mainland USA only in southern Florida.
Other Sites and Publications
- Identification of Diseases, Peel Injuries, and Blemishes of Florida Fresh Citrus Fruit (20 MB file)
Eldon Brown (Florida Department of Citrus), 1998
- Diseases Affecting the Fruit--Texas A&M
Also known as oleocellosis, this disease has caused heavy losses to growers and shippers of Marrs and navel oranges picked early in the season with green rinds. It also may affect other citrus varieties
- Agrochemical Database--Crop Data Management Systems, Inc.
Full text pesticide labels and MSDs
- Evaluation of New Postharvest Treatments
New fungicides are being developed for the management of postharvest decays of citrus. Sixteen isolates of the sour rot pathogen Geotrichum citri-aurantii were screened for sensitivity to ten DMI fungicides and three formulations of propiconazole
- Management of Bean Thrips
- New Methods to Control Postharvest Decay of Citrus
The purpose of this project is to evaluate new methods to extend the postharvest life of fresh citrus fruit
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