Friday, May 09, 2014
tomatoes_farmers_market_150px_dferguson_9836

Florida: Western Flower Thrips Develop Insecticide Resistance

AgFax.Com - Your Online Ag News Source


The western flower thrips and thrips-vectored Tomato spotted wilt virus are key pest threats to Florida’s multi-billion dollar fruit and vegetable industry. Attempts to control the western flower thrips with broad-spectrum insecticides, applied on a routine calendar schedule actually elevates its pest status.

Western flower thrips have now developed resistance to most traditional insecticides, including the IPM-compatible spinosyns. Spinosyn insecticides include SpinTor, Radiant, and Entrust (organic label). As a result, producers are experiencing unacceptable losses from pest damage and ineffective pesticide applications.

Western flower thrips populations are regularly monitored for resistance in different crops and regions of Florida. The first record of resistance occurred in Palm Beach County in 2008. An educational program to enhance adoption of integrated pest management (IPM) was begun, and the use of spinosyn insecticides was temporarily suspended in Palm Beach and Broward Counties.




More recently, resistant western flower thrips populations that are resistant to spinosyns were detected in Hillsborough County. Populations in North Florida have remained susceptible, although a single resistant population was detected last year.

Preserving the use of the spinosyns against the western flower thrips is a high priority because:

  1. No insecticide has provided the high level of control;
  2. It conserves populations of the key thrips predator, the minute pirate bugs;
  3. It has a reduced-risk status;
  4. It has a broad-spectrum of activity against other important pests.

A resistance management protocol that is a good foundation for a sound IPM program includes the following components: positive identification of target pests, applying insecticides only when required, making accurate and precise insecticide applications, diversifying the types of management methods used in the crop, and conserving natural enemies.

In efforts to sustain the effectiveness of spinosyns in Florida, no more than two applications should be made on the same and sequential crops per year.  Be sure to understand spinosyn susceptibility in your growing area, and if new recommendations exist to optimize thrips management and spinosyn susceptibility.


Tags: , , , , ,


Leave a Reply

Name and Email Address are required fields. Your email will not be published or shared with third parties.

Sunbelt Ag News

    DTN Grain Midday: Corn and Beans Lower, Wheat Mixed9-17

    AgFax Grain Review: Agribusinesses Sue Syngenta; Record Soybean Yields in Arkansas, Georgia9-17

    Hearing Reflects Highly Politicized Debate Over Biotech Crops — DTN9-17

    DTN Fertilizer Trends: Rabobank Forecasts Higher 3Q Retail Prices9-17

    Cotton in Southwest: Need More Heat; 4-Bale Dryland; Pigweed Plans – AgFax9-17

    DTN Cotton Open: Futures Inch Slightly Higher9-17

    DTN Livestock Open: Cattle Futures Staged for Rally9-17

    China Agrees to Buy $2.3B Worth of U.S. Soybeans — DTN9-17

    DTN Grain Open: All 3 Commodities Start Lower9-17

    Keith Good: 18.3B Bushels of Corn, Soybeans — Where to Put it All?9-17

    Grain TV: Quiet Trade with Very Light Volume9-16

    DTN Livestock Close: Cattle Complex Finishes Mixed9-16

    Doane Cotton Close: Renewed Selling on Overhead Resistance9-16

    AFB Grain-Soybean Close: Wheat, Soybeans Slide, Corn Posts Modest Gains9-16

    AFB Cotton Close: Dec. Continues Lower9-16

    AFB Rice Close: Down in Narrow Trade9-16

    DTN Cotton Close: Dec. Settles Modestly Lower9-16

    Missouri Farmer Uses Pig Manure for Natural Gas Production – DTN9-16

    DTN Grain Close: Mostly Lower, Waiting on Harvest9-16

    Non-Land Production Costs Unlikely to See Much Decline in 20159-16

    USDA: Weekly National Peanut Prices9-16

    DTN Livestock Midday: Early Pressure Erodes Buyer Interest9-16

    AgFax Cotton Review: Chinese Acreage Declines; Weather Damages Crops in India, Pakistan9-16

    Rice Outlook: U.S. Production Forecast Lowered to 218.3M Cwt9-16

    Georgia Soybeans: Grower Randy Dowdy Breaks The 100-Bushel Barrier9-16

    Insure Your Crop Revenue Guarantee — DTN9-16

    Feed Outlook: Record Corn Crop on Higher Yields9-15

    Corps of Engineers Vindicated in ’11 Missouri River Basin Flood — DTN9-15

    Cotton Outlook: U.S. Production Cut Nearly 1M Bales9-15

    Oil Crops Outlook: U.S. Soybean Yields To Raise Ending Stocks to 8-Year High9-15

    Wheat Outlook: Higher Imports, Decreased Exports9-15

    Good on Grain: Revisions to Corn, Soybean Acreage Estimates Possible9-15

    Choose Your Cover Crops Carefully — DTN9-15

    GMO Critics to Get Their Say at D.C. Hearings — DTN9-15

    Arkansas Forage and Grassland Council Conference Set Oct. 30 in Conway9-15

    Arkansas Winter Forages: What to Plant and How Much9-15

    Flint on Crops: Variety Trials are Worth Your Attention9-15

    Kansas Farmers Can Pursue Prizes for Soybean Yields, Values9-15

    Farmland Auction: Arkansas, Louisiana, Mississippi Cropland – October 229-14

    Soybeans – South – Variable Soybean Loopers; More Beans Cut – AgFax9-12

    Rice Crop: Harvest Zooms Along in Texas, Louisiana, Starts to Pick Up in the Delta9-12

    Rice Market: USDA Chops 11.5M CWT from Total Supply9-12

    Rose on Cotton: USDA Released a Bearish S&D Report9-12

    Environmental Groups Sue EPA Over Delay in Chlorpyrifos Ban – DTN9-12

    Cleveland on Cotton: Growers, Do Not Price Your Crop Right Now.9-12

    Welch on Wheat: U.S. and World Ending Stocks Increase9-12

    Welch on Grain: Increased Corn Production, Carryover9-12

    Railroad Criticism a Long-Standing Refrain Among Farmers9-12

    Texas Sorghum: Sugarcane Aphids Confirmed on Southern High Plains9-12

    USDA: Peanut Price Highlights9-12

    AgFax Rice Review: New Reservoir for Texas Growers; Continued Drought Problems in California9-12

    Peanut Harvest Gains Momentum In SE, Starts In Delta – AgFax9-12

    Small Farms and the Affordable Care Act9-12

    Georgia: Plains Peanut Festival, September 27, Celebrates Peanuts And Legacy9-12

    Mississippi Outdoors: Litter is Illegal, Unattractive and Even Harmful9-12

    Farming on the Mother Road: Farmers Becoming Sparse in California — DTN9-12

    Cattle at the Crossroads: Impact of Herd Expansion9-12

    Georgia Gains Section 18 To Apply Transform On Grain Sorghum For Sugarcane Aphids9-12

    U.S. Grain Transportation: Total Inspections Highest Since May9-12

    Nimitz, Non-Fumigant Nematicide, Gains EPA Registration9-12

    Grain Transportation: Congress Attempts to Find Rail Delay Solution – DTN9-11

    Texas: Growers Get Financial Help with Organic Certification9-11

    USDA Pegs Average Corn, Soybean Yields at Record Highs – DTN9-11

    USDA: $328M to Conserve Wetlands and Farmland, Boost Economy9-11

    2nd Arkansas Soybean Grower Breaks 100 BPA, and State Record9-11

    Sunbelt Ag Events

     

    About Us

    AgFax.Com covers agricultural trends and production topics, with an emphasis on news about cotton, rice, peanuts, corn, soybeans, wheat and tree crops, including almonds, pecans, walnuts and pistachios.

      

    This site also serves as the on-line presence of electronic crop and pest reports published by AgFax Media LLC (formerly Looking South Communications).

        

    Click here to subscribe to our free reports.

      

    We provide early warnings and confirmations about pests, diseases and other factors that influence yield. Our goal is to quickly provide farmers and crop advisors with information needed to make better and more profitable decisions.

         

    Our free weekly crop and pest advisories include:

    • AgFax Midsouth Cotton, covering cotton production and news in Alabama, Arkansas, Louisiana, Mississippi, Tennessee and Missouri.

    • AgFax Southeast Cotton, covering cotton production and news in Alabama, Florida, Georgia, North Carolina, South Carolina and Virginia.

    • AgFax Southwest Cotton (new for 2013!), covering cotton production and news in Texas, Oklahoma, Kansas and New Mexico.

    • AgFax West (formerly MiteFax: SJV Cotton), covering California cotton, alfalfa, tomatoes and other non-permanent crops in California's Central Valley.

    • AgFax Rice covering rice production and news in Arkansas, Louisiana, Mississippi, Missouri and Texas.

    • AgFax Peanuts, covering peanut production in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Texas and Virginia.

    • AgFax Southern Grain: covering soybeans, corn, milo and small grains in Southern states.

    • AgFax Almonds, covering almonds, pistachios, walnuts and other tree crops in California's Central Valley.

    • AgCom 101, providing guidance to ag professionals involved in social media.

    Our newsletters are sponsored by the following companies: FMC Corporation Chemtura Dow AgroSciences.

          

    Mission statement:

    Make it as easy as possible for our community of readers to find and/or receive needed information.

              

    Contact Information:

    AgFax Media. LLC

    142 Westlake Drive Brandon, MS 39047

    601-992-9488 Office 601-992-3503 Fax

    Owen Taylor Debra L. Ferguson Laurie Courtney

          

    Circulation Questions?

    Contact Laurie Courtney