Citrus Health Management Areas (CHMAs)

Citrus Health Management Areas

Green Swamp CHMA News Archive

    4/13/16 Central Florida CHMAs will make a coordinated spray of an Organophosphate (OP) insecticide on April 18 to April 25, 2016. Those with blocks that have not been harvested may need to consider another class of insecticide due to relatively long pre-harvest intervals for many OPs. It was decided to identify one main week for CHMA applications, with consideration that some growers may complete applications a few days before or after the designated week.

    Growers in the Water Conserv II area that are potentially interested in an aerial application in their groves should contact Rex Clonts ASAP at wrclonts@yahoo.com. If there is enough interest, an aerial application will be scheduled during the week of April 18 to 25.

    CHMA applications for the remainder of 2016 will follow the schedule below:

    June 20 early summer - OP or grower option
    Aug. 29 late summer - Pyrethroid
    Nov. 7 fall dormant - OP


    4/1/16 Due to delayed bloom in the region, the next scheduled central Florida CHMA application (originally scheduled to begin on April 11) has been delayed until Monday, April 18, 2016. The choice mode of action is organophosphate insecticide but if Valencia harvest is not complete at application time, another mode of action with an appropriate pre-harvest interval should be chosen.

    1/19/16 Central Florida CHMAs will make a coordinated spray of a Pyrethroid insecticide on February 1 to February 6, 2016. It was decided to identify one main week for CHMA applications, with consideration that some growers may complete applications a few days before or after the designated week.

    Local citrus grower, Rex Clonts, is coordinating an aerial application of a Pyrethroid insecticide in the Conserv II area starting on February 1, 2016 in the South Lake/West Orange County and Green Swamp CHMAs. Please contact Rex at wrclonts@yahoo.com for information about participating in the aerial application.

    10/13/15 The next coordinated CHMA spray to manage the Asian citrus psyllid is scheduled to begin in the South Lake/West Orange and Green Swamp CHMA on October 26th through November 2nd.

    The recommended mode of action this time of year is a pyrethroid insecticide. There will be an airplane available.

    If you would like to utilize the airplane contact Rex Clonts, wrclonts@yahoo.com.

    7/10/15 The South Lake/West Orange County and Green Swamp CHMAs will make a coordinated spray of an Organophosphate insecticide on July 27 to August 3, 2015. Rex Clonts, is coordinating an aerial application during this timeframe in the Conserv II area. Please contact

    Rex at wrclonts@yahoo.com if you would like to use the aerial application.

    4/22/15 - The next round of CHMA applications are scheduled to begin next Monday, April 27, 2015 in the South Lake/West Orange CHMA and the Green Swamp CHMA.  Applications in the remainder of Lake and Orange, plus Seminole and Marion Counties are scheduled to begin one week later on Monday, May 3, 2015.

    The Mode of Action for this spray will be an Organophosphate.  There will be and option for aerial application.  If you want to utilize the helicopter please contact Grower Coordinator Rex Clonts, wrclonts@yahoo.com.

    It is important to have as much participation in these coordinated applications as possible to continue the downward trends we have seen in many of the blocks being scouted in the CHMA psyllid monitoring program. 

    3/11/15 The next coordinated spray for the South Lake/West Orange CHMA and Green Swamp CHMA is set for the end of April. An exact timeframe will be established in a few weeks. The mode of action for this spray will be an organophosphate. There will be a helicopter available to growers. If you would like to utilize the helicopter contact Grower Coordinator Rex Clonts. Growers are free to choose any application method they prefer and any organophosphate insecticide they prefer

    10/28/14 HELICOPTER UPDATE: The Chopper crew now hopes to be here Thursday morning and finish Friday morning. They've been delayed due to wind conditions in south Florida over the last few days. We all understand how that goes, so thanks for your patience.

    Numbers planned for this CHMA spray in the area bordered on east by the 429, on the west by US27 and lying along Schofield/Cook Road, and McKinnon/New Independence Road corridors.

    1. Aerial application 938 acres (less insecticide experimental blocks in Mid-Fl Foundation grove )

    2. Conventional sprayer: 471

    3. Low volume ground: approx. 250

    4. Pushed and burned: approx. 175 (west end of Mckinnon rd, abandoned)

    This is the first time that every acre of citrus within those boundaries is accounted for. That's an great accomplishment and gives me hope we soon can say the same thing for all of Lake and W. Orange counties.

    Rex Clonts

    10/20/2014 The next coordinated spray for the South Lake/West Orange and Green Swamp CHMA will take place next week, October 27th – November 2nd. The selected insecticide mode of action for this spray will be a pyrethroid (Mustang, Danitol, Baythroid). Growers are free to choice any pyrethroid material they prefer.

    There will be a helicopter in the area doing aerial applications of Baythroid. If you would like to participate in the aerial application contact CHMA leader Rex Clonts, wrclonts@yahoo.com, or IFAS-Extension agent Gary England, gke@ufl.edu.

    7/24/14 Then next coordinated spray for the South Lake/West Orange and Green Swamp CHMAs will began Monday, July 28th. The mode of action for this spray will be an Organophosphate (Lorsban, Dimethoate, Imidan). Contact CHMA coordinator Rex Clonts or UF-IFAS Citrus Extension Agent Gary England for more information about the spray.

    4/28/14 The South Lake/West Orange CHMA and the Green Swamp CHMA will be conducting a coordinated spray beginning today and ending on May 5th. There will be a helicopter available for aerial application. There will also be grove caretakers operating ground rigs in the area to aid in the completion of the coordinated spray.

    The selected mode of action for this spray will be an Organophosphate. Growers are free to choice any Organophosphate material that they prefer. Please follow all label instructions for any material that is used.

    If you would like to utilize the helicopter or would like to participate via ground spray applications contact Mr. Rex Clonts at wrclonts@yahoo.com.

    4/14/14   Our next coordinated spray will start in the South Lake/West Orange CHMA (includes the old Green Swamp CHMA) on April 28th – May 5th.

    For the North Lake CHMA (old Central Lake/ North Orange & North Lake/Marion CHMAs) spray target date is from May 5th – May 12th.

    Please pass the word around for everyone to use an Organophosphate if possible. The helicopter will be operating in the Conserve area spraying Malathion @ 2pts which costs about $8.00/acre.

    So far this year my grove has noticeably lower psyllid population so thanks to everyone who participated in January. I hope you are seeing similar low populations.

    This application comes at a time when most of us are spraying anyway and everyone is feeling the pinch of costs. I just want to emphasize that timing during the 8 day windows is critical to overall psyllid control in the months to come.  Growers who have applied an insecticide earlier, please consider re-spraying during the CHMA window to get the best bang for the buck.

    While controlling psyllids doesn’t guarantee your grove will survive greening….. failure to control psyllids does guarantee it won’t.

    Contribution by Rex Clonts

    1/27/14   The Central Lake/North Orange, South Lake/West Orange, and Green Swamp CHMAs are conducting a coordinated spray this week.  The selected Mode of Action for this spray is a Pyrethroid (Danitol or Mustang).  There are contractors in these CHMAs conducting ground sprays as a part of the coordinated spray.  Over the weekend over 1,300 acres were sprayed with a helicopter.  The success of this spray will depend on the amount of acreage that gets sprayed.  Contact Brandon Page (bpage@ufl.edu) or Rex Clonts (wrclonts@yahoo.com) if you would like further information about joining this coordinated spray and any other future spray.

    1/2/14 The South Lake/West Orange CHMA will conduct a coordinated spray from January 23rd through January 31st. The mode of action for this spray will be a Pyrethroid (Dantiol or Mustang).

    There will be a helicopter available to help aid the completion process of this spray. The helicopter will be applying Mustang at a rate of 2 gallons per acre. The helicopter will cost $10 per acre. If you would like to utilize the helicopter please contact Rex Clonts (wrclonts@yahoo.com).

    All growers are strongly encouraged to participate in the coordinated spray. This method of psyllid control has proven to be the most effective but the success is determined by the amount of acreage participating in the coordinated effort. The more acres involved the better the results.

    5/8/13 The recommendation for coordinated psyllid management sprays is to apply an Organophosphate at starting May 1st – 18th. The next coordinated spray should take place from June 15th – 29th using a foliar Neonicotinoid and an Abamectin material. Please follow all label directions for any material that is used.

    These spray recommendations come from the Volusia CHMA Coordinated Spray plan. The Volusia CHMA is one of the top preforming CHMA's in the state and the spray plans in use there have proven to be very effective against psyllids.

    The complete coordinated spray schedule for Volusia can be viewed on the Volusia CHMA webpage, under the planned pesticide link.

    9/5/12 A Central Florida CHMA meeting will be held tomorrow at the Lake County Ag Center in Tavares. The meeting will cover CHMA activity in the East Central Florida region. Presentation will be given by personal from the Florida Department of Agriculture and Consumer Services and The University of Florida. The meeting will begin at 9:30 am and will be held in the auditorium.

    The Lake County Ag Center is located at:
    1951 Woodlea Dr.
    Tavares, Fl. 32778

    2/1/12 - Discussion at the East Central Florida CHMA Roundtable today, February 1, 2011, reached a consensus that the following course of action is necessary in the various CHMAs in the region:

    • Application of a dormant spray of a pyrethroid insecticide as soon as possible to control overwintering psyllid populations in the citrus canopy is necessary.

    • Refer to Developing a CHMA Psyllid Management Plan at (http://www.crec.ifas.ufl.edu ) for commercial formulations of pyrethroid insecticides recommended for managing Asian citrus psyllid.

    • Always refer to pesticide labeling for all instructions, including pre-harvest interval, Restricted Entry Interval (REI), etc.

    The group at the CHMA meeting also determined that grower participation in the various CHMAs is vital in reaching the overall goal of reducing the populations of Asian citrus psyllids and thus slowing the potential of further HLB infection of commercial citrus plantings. To become active in your local CHMA, click on the Join the CHMA link at the bottom of the CHMA website that includes your citrus groves.

    1/5/11 – Important CHMA planning meeting Jan. 26 9:30-11AM.
    A planning meeting is scheduled for the Green Swamp and Central Lake / North Orange CHMAs.  The meeting will be held on January 26, 2011 from 9:30 AM till 11:00AM at the Lake County Extension Office.  All growers with groves in these defined CHMAs are encouraged to attend as plans are made for upcoming coordinated psyllid sprays for 2011.


    1/5/11 – Next coordinated psyllid spray planned for Jan 24 - Feb 7, 2011.
    The Green Swamp CHMA will conduct its first coordinated psyllid spray of 2011 beginning January 24 through February 7.  Growers are encouraged to use a pyrethroid insecticide for this application as part of the ongoing effort to manage pesticide resistance development in local psyllid populations.  The two currently available pyrethroid insecticides available for use in Florida citrus are Danitol (fenpropathrin) and Mustang (zeta-cypermethrin).  Growers can use any application method they choose (aerial, low-volume, speed sprayer). For additional information please contact Bill Lennon (407) 719-5496.