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

    New Holland Combine Sets Guinness Harvest Record10-18

    Rice Market: Sideways Movement Continues10-17

    Rice Crop: Delta Region Saw Harvest Delays with Storms10-17

    AFB Grain-Soybean Close: Wheat Follows Corn, Soybeans Lower10-17

    AFB Cotton Close: Dec. Moves Lower10-17

    AFB Rice Close: Futures Recover from Early Losses10-17

    Rose on Cotton: Dec Contract Still Under Pressure10-17

    Cleveland on Cotton: Exports Lowest in ‘My Memory’10-17

    DTN Livestock Close: Futures End Week Mixed10-17

    Brazil: Beef Production Steps Up Over Next 10 Years10-17

    DTN Cotton Close: Mixed As Dec. Loses Ground10-17

    Soybeans: Neonic Seed Treatment Little or No Benefit, says EPA – DTN10-17

    Informa Forecast: Soybean Acres Up 4.3M in 2015 – DTN10-17

    DTN Grain Close: Prices Down for the Day, Positive for the Week10-17

    Crop Margins Tighten, Living Expenses Not Far Behind10-17

    USDA: Peanut Price Highlights10-17

    DTN Livestock Midday: Feeder Cattle Turn Sharply Lower10-17

    Georgia: 6 Counties Declared Natural Disaster Areas10-17

    DTN Grain Midday: Wheat Leads in Mixed Trade10-17

    Livestock: WTO Ruling on Country of Origin Labeling Expected Soon — DTN10-17

    DTN Cotton Open: Ticks Slightly in Red10-17

    U.S. Energy: Narrowing Brent-WTI Spread Impacts Global Crude Markets10-17

    Gasoline Prices: Show 9-Cent Decline10-17

    Propane Stocks: Rise by 0.7M Barrels10-17

    DTN Livestock Open: Futures Expected to Begin Lower10-17

    Diesel Prices: Average Decreases 4 Cents10-17

    DTN Grain Open: Higher Start Across Board10-17

    Georgia Blueberries: State Leads Nation in Production — 96M Pounds10-17

    Keith Good: Bumper Grain Crops Create Harvest, Storage Issues10-17

    Farm Bill Contingency Plans: How Optimistic are You? – DTN10-16

    Arkansas Agriculture Secretary Calhoun Retiring10-16

    Georgia: Waste Pesticide Disposal, Quitman, Oct. 3010-16

    Global Ag: Ebola Hits West Africa Hard – DTN10-16

    Grain Markets: Crop Prices Up After Bearish USDA Report10-16

    DTN Grain Close: Markets Defy Bearish Expectations, Move Higher10-16

    Brazil Soybeans: Dry Conditions Put Planting on Hold10-16

    U.S. Grain Transportation: Rail Backlog Grows, Secondary Bids Spike10-16

    U.S. Drought Outlook: Improvements for Southwest, Southern CA10-16

    Coarse Grain Outlook: Record Corn Yields Produce Record Crop10-16

    Rice Outlook: U.S. Production Projection Raised to 220.7M Cwt10-16

    Resistant Weeds: USDA Accelerates the Fight — DTN10-16

    Mississippi Soybeans: Poised to Shatter Record for Average Yield10-16

    Keith Good: Beige Book — Observations on Ag Economy10-16

    Cotton Outlook: Global Stock Growth to Slow in 2014-1510-15

    Oil Crops Outlook: Soybean Prices Depressed by Historically High Supply10-15

    Wheat Outlook: Endings Stocks Lower on Increased Usage10-15

    Enlist Duo Herbicide Approved for Use in 6 States — DTN10-15

    State Environmental Agency Calls on EPA to Withdraw Water Rule — DTN10-15

    Georgia: Tifton’s Grimes Named Southeastern Farmer of Year10-15

    Doane Cotton Close: Volatility Reigns in Market10-14

    Corn Harvest Reaches 24%, Soybeans at 40, Cotton 22 — DTN10-14

    Louisiana Soybeans: Kudzu Bugs Spreading Through the State10-14

    USDA: Weekly National Peanut Prices10-14

    DTN Fertilizer Trends: Prices Show Little Movement10-14

    Payment Level Indicators for ARC-CO, PLC Based on October WASDE Data10-14

    Tennessee: Winter Row Crop Production Meeting Dec. 15 at Oakland10-14

    Landowner Beats IRS Over Conservation Program Payments – DTN10-14

    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