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Diseases, Disorders & Decay Control |
University of Florida | Other Universities and Government Sites | Selected Other Sites
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.
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."
Oil Spotting (Oleocellosis) of Citrus Fruit - "Oil spotting is a common peel injury of citrus fruit that is usually caused by mechanical damage...."
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, watersoaked appearance of the fruit peel (most commonly at the blossom end) caused by internal bruising and juice leakage from juice vesicles."
Phytophthora Diseases of Citrus - Phytophthora spp. cause the most serious and economically important soilborne diseases of citrus in Florida.
Brown Rot - Brown rot is caused by two species of Phytophthora, P. citrophthora and P. parasitica.
Blue Mold - Blue mold is caused by the fungus Penicillium italicum, and is a much minor decay in Florida than green mold.
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.
Green Mold - Green mold is caused by the fungus Penicillium digitatum which is ubiquitous to all citrus growing regions.
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.
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.
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.
Other
Universities and Government Sites
*Links
to Non-University of Florida/IFAS sites are provided as
a service and do not imply endorsement of information or products*
Chemical Residue Tolerance Information For:
U.S.A. Title 40 of the code of federal regulations
Foreign Agricultural Service - International Maximum Residue Limit Database
Europe (at http://europa.eu.int/comm/food/plant/protection/pesticides/index_en.htm)
Codex Alimentarius (Click for the CODEX Alimentarius home page)
Pesticides & Pesticide Labels:
US EPA
Pesticide Information WebSite
Postharvest Pitting - An excellent pamphlet by Peter D. Petracek,
Craig Davis, and Huating Dou (Florida Department of Citrus) describing
Postharvest Pitting of citrus, and contrasting the disorder to
symptoms of chilling injury.
Diseases Affecting the Fruit
- 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.
Selected
Other Sites
Evaluation of New
Postharvest Treatments - In
2000, we continued to evaluate and develop new fungicides for management of
postharvest decays of citrus. We focused on the best materials from our previous
years’ evaluations: azoxystrobin (Abound 2F), fludioxonil (Scholar 50WP), and
the guanidinium TM-417.
New Methods to Control Postharvest Decay of Citrus - New fungicides from
Janssen pharmaceutica controlled green mold and sour rot caused by Penicillium
digitatum or Geotrichem citri-aurantii in laboratory tests, and two will be
evaluated at Lindcove.
Postharvest Management of Bean Thrips - In recent years some
shipments of navel oranges to Australia and New Zealand have been rejected
because the adult stage of bean thrips (Caliothrips faciatus)were found inside
the navel.
Investigation of Sanitizing Systems, New Fruit Fungicides, and Biological
Treatments for Control of Postharvest Decay - Organic fungicides have
lost much of their original effectiveness due to the proliferation of
fungicide-resistant pathogens after a few years of continuous use in
packinghouses. The most effective long-term solution to this problem is
stringent packinghouse sanitation.
Fruit Quality Evaluation Center Modification - The CRB Fruit Quality
Evaluation Center packline at the UC/Lindcove Research and Extension Center has
been in operation for four harvest seasons, and based on their experience with
the line, researchers have recommended various modifications.
Development of a High-Throughput Screening Approach for Post-Harvest Disease
Control in Citrus - The primary goal of this project is the development of a
high-throughput screening tool to identify and test active agents, including
biological control organisms, which could control mold growth.
excellent information.
pesticide labels.
*Links
to Non-University of Florida/IFAS sites are provided as
a service and do not imply endorsement of information or products*
