Citrus Health Management Association (CHMA) - Citrus Research ...

Success of the Citrus HealthManagement Area (CHMA)program in FloridaMichael E. RogersAssociate Professor of Entomology

What is a CHMA?• Citrus Health Management Area• A grower defined grouping of citrusacreage where grower participantscoordinate psyllid control efforts andmanagement of pesticide resistancedevelopment (coordinated rotation ofMOA’s)• VOLUNTARY PROGRAM IN FLORIDA

Why Coordinate Sprays?• Psyllid movement behavior– Between groves; daily basis– Can’t be managed on a block-by-block basis• Short residual activity of pesticides– Airblast application =

Implementation of CHMAs• Coordination provided by:– University of Florida (UF-IFAS) Extension– Florida Department of Agriculture &Consumer Services, Division of PlantIndustries (FDACS-DPI)• Grower participation will be necessarybut is VOLUNTARY

ACP Monitoring Program• Personnel from CHRP– USDA and FDACS• Scouting 6,000 blockson a 3 week cycle• Equivalent of 106,469acres scouted eachcycle

www.flchma.org

CHMAs as a research tool• Real-world situation• Large scale applications• Area-wide monitoring• Data from CHMA program can be used tolearn more about managing psyllids• Example…

Category0 psyllids10 psyllidsNE Desoto CHMA(Cycle 3: Sept. 12 – 30, 2011)• Average ACP per block scouted = 0.8571• Numbers presented are mean numberpsyllids per block scouted within each TRSNA2.0NANATrends Cycle 2-3NPD8.70 psyllids for two consecutive cycles0.30.72.8Psyllids decreased to lower categoryPsyllids decrease but remained insame categoryPsyllids increased but remained insame categoryNPDNPDNPDNA0.61.05.02.0 2.8 0.20.5 0.3 4.20.3 0.2 0.3NPDPsyllids increased to a higher categoryNo previous dataNPD0.51.00.10.20.4NANot Available (no counts)NPD0.4NPD

NE Desoto CHMA – Cycle 3 Scouting Summary –“The Edge Effect”NW CornerTotal = 19Mean per block = 0.07Maximum (1 block) = 4n = 272NE CornerTotal = 68Mean per block = 0.25Maximum (1 block) = 18CenterTot. = 7Mean = 0.03Max = 3SW CornerTotal = 40Mean per block = 0.15Maximum (1 block) = 5SE CornerTotal = 100Mean per block = 0.3676Maximum (1 block) = 23

Border Sprays Utilized• Danitol (fenpropathrin) applied as a borderspray to all blocks and then around the entireperimeter of the area(and some hotspots)following Cycle 3 scouting (Sept.).• Followed up with a coordinated aerialapplication using an OP insecticide (Oct 20).

Category0 psyllids10 psyllidsNE Desoto CHMA(Cycle 3: Sept. 12 – 30, 2011)• Average ACP per block scouted = 0.8571• Numbers presented are mean numberpsyllids per block scouted within each TRSNA2.0NANATrends Cycle 2-3NPD8.70 psyllids for two consecutive cycles0.30.72.8Psyllids decreased to lower categoryPsyllids decrease but remained insame categoryPsyllids increased but remained insame categoryNPDNPDNPDNA0.61.05.02.0 2.8 0.20.5 0.3 4.20.3 0.2 0.3NPDPsyllids increased to a higher categoryNo previous dataNPD0.51.00.10.20.4NANot Available (no counts)NPD0.4NPD

NE Desoto CHMA – Cycle 4 Scouting Summary –“The Edge Effect”NW CornerTotal = 9 (19)Mean per block = 0.04 (0.07)Maximum (1 block) = 3 (4)F = 1.52, P = 0.2186NE CornerTotal = 14 (68)Mean per block = 0.05 (0.25)Maximum (1 block) = 5 (18)F = 4.73; P = 0.0301F = 0.16; P = 0.6919CenterTot. = 9 (7)Mean = 0.04 (0.03)Max = 6 (3)SW CornerF = 10.3; P = 0.0014Total = 5 (40)Mean per block = 0.02 (0.15)Maximum (1 block) = 3 (5)SE CornerF = 6.26; P = 0.0126Total = 8 (100)Mean per block = 0.03 (0.3676)Maximum (1 block) = 4 (23)Numbers in ( ) are data from Cycle 3

CHMAs as a research tool• In Florida…– We are utilizing the large amounts of datacollected to test new ideas on a large scale, realworldbasis• In California…– Similar opportunity to validate control methodsunder the California growing conditions

CHMA Summary• Scouting data generated thus far are showingpromising results from coordinated sprayefforts!• Coordinated “dormant” sprays should be thestarting point for a coordinated spray program• Participation by all is needed!!!

Acknowledgements• Citrus Research and Development Foundation• Efforts of FDACS / USDA ACP scouting program• Numerous grower leaders• Citrus Extension Agents• Email questions/comments: mrgrs@ufl.edu