CITRUS PEST UPDATE TEXAS
Awinash P. Bhatkar, PhD Biosecurity & Agricultural Resource Management Texas Department of Agriculture Austin, Texas
1-888-TELL TDA or (512) 463-5025 TexasAgriculture.gov Citrus Canker Quarantine Xanthomonas citri (axonopodis) pv. citri CANKER QUARANTINED AREAS
Asiatic strain (all citrus varieties) Harris County, Harris quarantine • 2 Sour orange trees in a city park destroyed Fort Bend County, Richmond quarantine • 1,115 positive trees on 121 properties • All the positive trees removed with homeowner consent. Wellington stain (limes and lemons) Cameron County, Rancho Viejo quarantine • 218 positive trees removed on 159 properties with homeowner consent. Total 1,333 positive trees on 280 properties CITRUS CANKER SYMPTOMS (Asiatic Strain)
Citrus Canker Richmond Quarantined Area Fort Bend & Harris Counties, Texas 1,004 citrus trees removed from 121 properties
Richmond Quarantine Harris Quarantine Ft Bend County (May 20, 2016) March 27, 2018 Area 43.5 to 53.1 sq. miles 1.23 sq. miles Citrus Canker Wellington strain 58 Sq. miles (Discovered October 23, 2015)
218 limes/lemon trees removed From 159 properties Canker Solve RC Spray Tree Removal
QHS disinfectant Spray Adult Psyllid
Symptoms
White waxy excretions
Asian Citrus Psyllid & Citrus Greening Quarantines
Nymph
Eggs Citrus Greening Gulf Coast Coastal Bend & Valley Quarantined Areas
GULF COAST Harris (7/15/14) Ft Bend (7/15/14) Montgomery (9/8/14)
COASTAL BEND Aransas (3/12/18) HLB +Samples 639/1193 (32%) Calhoun (3/12/18) Nueces (3/12/18)
VALLEY Cameron (12/9/14) Brooks (3/12/18) Hidalgo (4/21/14) Starr (12/9/14) Willacy (12/9/14) SCHEDULED PSYLLID TREATMENT Dormant Dormant Sprays (2) Drench Foliar sprays Sprays (1)
Section 18: Imidacloprid – foliar, drench Section 18: Clothianidin – drench (nursery plants) Resistance adults & nymphs Management Section 3?: Sulfoxaflor – Section 24 (c): Imidacloprid (CoreTect tablets) - wholesale nurseries, homeowners (long-lasting) Asian Citrus Psyllid Biocontrol Tamarixia radiata production
6,000,000 CPHST Laboratory, Mission, Texas
Total released: 8.5 million (2017-2018)
5,000,000 Released in urban areas: 365,200 TDA: 38,000 parasitoids (9 HLB quarantined counties)
2010 : 43 ACP nymphs per flush 4,000,000 2016: 3.8 ACP nymphs per flush Texas 2017: 2.4 ACP nymphs per flush Tamaulipas Baja California 3,000,000 Effectiveness: 94% Florida Louisiana Puerto Rico 2,000,000 Field Cages TOTALS
1,000,000
0 FY 2011 FY 2012 FY 2013 FY 2014 FY 2015 FY 2016 FY 2017 TOTALS Citrus Production in Texas
400,000
350,000
300,000
250,000
200,000 Acreage Total tons 150,000
100,000
50,000
0 2008 2009 2010 2011 2012 2013 2014 2015 2016
Returns ($$) on citrus production in Texas
120,000,000 ACP management
100,000,000
80,000,000 * ** 60,000,000
40,000,000
20,000,000
0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Mexican Fruit Fly Quarantine Texas
33.4 sq. miles
91.1 sq. miles
Sterile MFF Releases Released 8,553,580 Acres 16,240.4 Average 527/Acre With Cordial Thanks To
USDA-APHIS-PPQ Texas A&M Kingsville Citrus Center Texas A&M Plant Disease Diagnostic Lab USDA CPHST Mission Lab USDA-APHIS-PPQ Moorefield Fruit Fly Facility TDA Regional & CHRP staff USDA-APHIS-PPQ CAPS DHS-CBP