The Commercial Citrus Extension Agent provides wide ranging educational programs to grove owners, managers, and employers.  These include improved and economically sound production practices that enhance the productivity and profitability of citrus production in the Polk/Hillsborough County Area.

To view information from the six commercial citrus county extension agents in Florida,
visit the Citrus Agents Website.


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Chris Oswalt

Commercial Citrus

Extension Agent IV, M.S.


Recent Citrus Blog Posts

Solutions to citrus greening top 10 2017 UF/IFAS stories

GAINESVILLE, Fla. – From lobsters to oranges, the University of Florida Institute of Food and Agricultural Sciences embraced stories of resilience and change during 2017. The top 10 stories for UF/IFAS during 2017 include finding ways to manage a disease that is crippling the citrus industry to helping lobstermen find damaged traps after Hurricane Irma to researchers discovering a new ant species in south Florida. Meanwhile, other UF/IFAS


Plant Biostimulants: Know the Facts

Recent years have seen an explosion of products termed "biostimulants". What is biostimulants? Are they a good alternative to traditional chemical products?  Due to the recent outbreak of citrus greening in Florida, UF/IFAS has been conducting research on different types of plant biostimulants to determine if they are beneficial to the


An Insecticide-Free Way to Grow Citrus in the Face of Greening

Citrus greening disease is devastating Florida citrus. This disease is spread by an insect, the Asian Citrus Psyllid. Growers are faced with expensive decisions about spraying pesticides to control the psyllid to reduce the spread of the disease. Are there any ways to control psyllids without resorting to chemicals? Researchers at UF are looking into growing citrus under an insect excluding screen enclosure. Insect excluding screens have much