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Treasure Coast citrus notes
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Permanent Link: http://ufdc.ufl.edu/UF00091718/00019
 Material Information
Title: Treasure Coast citrus notes
Physical Description: Serial
Language: English
Creator: St. Lucie County Extension, Institute of Food and Agricultural Sciences, University of Florida
Publisher: St. Lucie County Extension, Institute of Food and Agricultural Sciences, University of Florida
Place of Publication: St. Lucie, Fla.
Publication Date: 2011
Copyright Date: 2010
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Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
System ID: UF00091718:00019

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UF/ IFAS/ St. Lucie Extension, 8400 Picos Road, Suite 101, Ft. Pierce, FL 34945 ( 772 ) 462 1660 http://stlucie.ifas.ufl.edu Treasure Coast Citrus Notes June 2011 Time to Prepare for Hurricane Season June 1 was the official start of the 2011 hurricane season and forecasters are again predicting an above average number of storms for the coming months. The Colorado State University fore cast is for 9 hurricanes to form, 5 of them of major intensity among a total of 17 named tropical storm systems. Hurricane forecasting is still not an exact science, but the people who work with these complex weather systems are getting increasingly bette r with their predictions. Hurricane preparation is not a process that should be started a couple of days before a storm is predicted to head our way. Planning should begin now so that you are prepared to act in the last days before a storm. EDIS document HS 804, Hurricane Preparedness for Citrus Groves can help you begin that planning process. http://edis.ifas.ufl.edu/pdffiles/CH/CH17800.pdf Insi de this Edition.. Time to Prepare for Hurricane Season UF/IFAS Hydrilla Survey Citrus Copper Application Scheduler Meeting Summer Copper Fungicide Applications UF/IFAS Extension Employment Opportunities Pesticide Applicator Training & Testing (General Standards & Online CEU Opportunities)

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UF/IFAS Hydrilla Survey Please take a few minutes to complete the UF/IFAS Hydrilla IPM survey found online at https://www.surveymonkey.com/s/hydrilla This survey is being conducted by the St Lucie County Cooperative Extension in conjunction with the Osceola and Citrus County Extension offices, the Entomology & Nematology Department at the University of Florida and Florida A&M University. Our goal is to survey Florida residents who frequent Florida fresh water bodies for recrea tion or work. Even if you dont manage Florida waters, your input is important! This survey is being conducted as a part of a needs assessment for a joint research and extension project. You must be 18 years of age or older to participate. Your particip ation is voluntary. You do not have to answer any question that you do not wish to answer. Your responses will help us find out what we can do to develop effective educational tools. The survey will take 5 to 10 minutes to complete. We will keep your answers confidential to the extent provided by law. Your name and the contact information you choose to provide will not be used in any report or shared with others outside the scope of this project. We will only use your answers after they have been combined with the other respondents answers. If you have any questions, please email Ken Gioeli at ktgioe li@ufl.edu or Dr. Jennifer Gillett Kaufman at gillett@ufl.edu Thank you for pa rticipating in this Florida water bodies with hydrilla survey. Citrus Copper Application Scheduler Meeting In my last newsletter, I announced updates to a copper application scheduler model developed a number of years ago. To increase the utilization and understanding of the model by the citrus industry, the citrus extension agents have scheduled a series of e ducational meetings focusing on this production tool. The schedule of meetings follows on the next page, noting that the meeting in Ft. Pierce will be held on Wednesday, July 27 at the Indian River REC. In addition to the presentation by Dr. Megan Dewdne y, pathologist at the CREC in Lake Alfred, well have a number of computers set up in the auditorium for a handson experience. 1 CEU in the Ag Tree Crop and Private Applicator categories will be offered.

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Summer Copper Fungicide Applications Indian River fresh grapefruit growers have been battling citrus canker issues for a number of years, and summer signals the time of year when heavy thunderstorms can spread canker rapidly to foliage and fruit. Even though most growers have probably done a pretty good job of managing canker through this long, dry spring, heavy rains can spread the bacteria in short order. Research has shown that raindrops, pushed by the high winds which often accompany thunderstorms, can actually drive the bacteria into the leaf stomates which results in canker infection. This can occur even if copper fungicides have been applied as a protective measure. Citrus leafminer damage on foliage also provides a convenient entrance point for the bacteria. Copper fungicides are the only products currently recommended for canker control on citrus in Florida. During the summer rainy season, applications of copper fungicides at a 1 lb /acre metallic rate (or more) at 21 day intervals are required. Depending on the variety, oranges grown for the fresh market may have to be sprayed through July to be protected. Fresh grapefruit are susceptible to canker infection until they are fully grown in October and must be treated accordingly. Much more information can be found in the 2011 Flo rida Citrus Pest Management Guide. http://www.crec.ifas.ufl.edu/extension/pest/PDF/2011/Canker.pdf Peel blemishes, or burns on fresh fruit varieties are often associated with tank mixes containing copper fungicides, especially during the summer period. Tank mix applications when temperatures exceed 90 or those containing spray oils are often blamed. Another issue is the pH (acidity) of tank mixes containing copper fungicides. Many copper fungicide labels recommend a tank mix pH of 6.0 to 6.5 to avoid phytotoxicity. Phosphite materials (Nutriphite, Phostrol, ProPhyt, etc.) are often utilized in fol iar nutritional programs and may lower the pH of tank mixes. Potassium carbonate is a readily available and inexpensive product that may be used to increase the pH of tank mixes, if necessary. The potential for reducing peel blemishes resulting from tank mix combinations can possibly be reduced by utilizing the following pra ctices : 1. Add dry or liquid copper fungicide materials to the tank first, allowing them to thoroughly disperse before adding other materials 2. Check the pH of tank mixes frequently, especi ally after changing water sources, utilizing pH test strips or a reliable meter that has been properly calibrated 3. Add spray oils to the tank last after other materials have thoroughly dispersed to avoid encapsulation of dry materials 4. Avoid spraying in temp eratures above 90

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Exte nsion Employment Opportunities IFAS Extension has an opening for a citrus agent, headquartered in Lake County (Tavares) with responsibilities in 6 additional counties in the northern portion of the citrus belt. In addition to citrus, the new agent will also be expected to focus some effort on other fruit crops. A Masters degree is required in agriculture and experience with citrus or other fruit crops is desirable. Click on the following link for additional information about the position: https://jobs.ufl.edu/applicants/jsp/shared/position/JobDetails_css.jsp UFAS Extension also has an opening for a 4 H/Youth Development Agent, based in Indian River County. Details about the position can be found at the following: http://personnel.ifas.ufl.edu/0001 4012%20Indian%20River%204H%20Agent.pdf Pesticide Applicator Training /CEU Opportunities General C ertification S tandards (CORE) T raining & T esting Wednesday July 6 2011 9:00 AM to 10:4 0 AM with exa m to follow. Cost is $20 with checks payable to SLC Extension Advisory Council or use the online registration and pay ment option at the link, below. Pre registration R equired, c all (772 ) 4621660 for more information. http://www.eventbrite.com/event/1660989063 Citrus Industry Magazine Understanding Pesticide Formulations One General Standards (CORE) CEU http://www.citrusindustry.net/2011ceu3.html Florida Grower Magazine A L a rge Selection of General Standards (CORE) CEUs http://www.growingproduce.com/floridagrower/ceu/

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Just for Fun Young Country Marksman Preacher Smith decided to pay a visit to the new family that just moved onto the farm down the road. When he pulled in the driveway, he noticed targets everywhere he looked on the barn, on trees, on the scarecrow. Incredibly, each one of the targets had a bullet hole right in the center of the circle on the target. Spying a boy in the yard, the pr eacher walked up to him and asked, Whos the marksman around here? I am, said the kid. Thats some shooting, gushed Preacher Smith. Howd you learn to shoot like that? Oh, its easy, said the little boy. I just shoot first and th en draw all the circles around the bullet holes later. Take Care, Tim Gaver, Extension Agent Citrus UF/IFAS/St. Lucie County Extension 8400 Picos Rd, Suite 101 Ft. Pierce, FL 34945 (772) 462 1660 Tgaver.49@ufl.edu UF/IFAS / St. Lucie County Extension Website http://stlucie.ifas.ufl.edu (Click on the CITRUS tab at the upper left for my CITRUS pages ) All programs and related activities sponsored for, or assisted by, the Institute of Food and Agricultural Sciences are open to all persons without discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital s tatus, national origin, political opinions, or affiliations. Florida Cooperative Extension Service/Institute of Food and Agricultural Sciences/University of Florida/Millie Ferrer -Chancy, Interim Dean and Director for Extension.


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