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

    National Corn Growers Association Names New CEO — DTN9-2

    DTN Grain Midday: Wheat Trade 7 to 13 Lower9-2

    Brazil Soybean Exports Decline in August — DTN9-2

    DTN Cotton Open: Tumbles to Five-Session Low9-2

    South Carolina: Crop Production Field Day Set Sept. 25 at Blackville9-2

    DTN Livestock Open: Cattle Futures Starting with Firm Undertone9-2

    DTN Grain Open: Higher on Light Buying Interest9-2

    Keith Good: Rail Service Problems Persist; Hog Prices Rebounding9-2

    Texas Cotton Industry Mourns The Death Of Economist Carl Anderson9-1

    Livestock: Market Lessons from 4-H County Fairs – DTN9-1

    China Cotton: Reserves’ Quantity, Quality Cause Problems – DTN9-1

    Welch on Wheat: Spring Wheat Harvest Running 22% Behind9-1

    Welch on Grain: Corn Condition Improves, Well Above Average9-1

    Flint on Crops: Rain Is Better Than Well Water9-1

    Rose on Cotton: Plenty of Gaps and No Rallies Expected8-29

    Peanut Harvest In N. Fla.; Drought Pushes Digging In Lower SE – AgFax8-29

    Rice Crop: Looking for a Normal Crop, Not a Bumper8-29

    Rice Market: Being Short Tricky but Being Long Takes Patience8-29

    Peanut Stocks and Processing: Utilization Up 2%, Stocks at 1.9B lbs8-29

    Cleveland on Cotton: Chinese Demand Pulling Prices Higher8-29

    DTN Livestock Close: Cattle Futures Sharply Higher on Positive Cash News8-29

    Doane Cotton Close: Futures Unable to Recover Losses8-29

    DTN Cotton Close: Late Rally Leaves Dec. Flat8-29

    AFB Grain-Soybean Close: Modest Losses Across the Board8-29

    AFB Cotton Close: Dec. Moves Fractionally Lower8-29

    AFB Rice Close: Futures Chart New Leg Down8-29

    Farm Bill: Cotton Transition Assistance Enrollment Now Open8-29

    Are USDA Corn Yield Forecasts Getting Better or Worse Over Time?8-29

    DTN Grain Close: Markets Settle Lower Ahead of 3 Day Weekend8-29

    USDA: Peanut Price Highlights8-29

    DTN Livestock Midday: Hog Futures Surge Higher8-29

    Farmers with Foreign Assets Face New IRS Rules and Serious Penalties8-29

    Mississippi Outdoors: Beaver Management Not a Simple Issue8-29

    Arkansas: Flood Damage to Crops Valued at $35.6M8-29

    Delta Soybean Yields Start Strong; Sugarcane Aphid Marches On – AgFax8-29

    California: Pinnacle Announces Acquisition of Kerman Ag Resources8-29

    Midwest Farm Lenders Expect Solid Output; Lower Farm Income – Federal Reserve8-29

    Farm Payments to Stakeholders Rise as Gov. Payments Decline – USDA8-29

    Young Farmer in Your Future? – Helping Him or Her is Key to Success. – DTN8-29

    Net Farm Income Forecast to Fall,10.6% Decline Crop Value – USDA8-29

    Alabama: Pesticide Clean Days, Sept. 3-48-28

    Oklahoma: Fall Cotton Tour, Hydro, Sept. 118-28

    Rice Harvest Eases Into Gear In Midsouth – AgFax8-28

    Farm Drones Under Scrutiny: Farmers Impatient for FAA Ruling – DTN8-28

    USDA Readies Dairy Program, Producers Able to Sign Up Tuesday – DTN8-28

    U.S. Grain Transportation: Inspections Continue to Increase8-28

    Farm Program Decisions Hinge on Uncertain 2014 Crop Prices8-28

    Raindrops Keep Falling on Heads of Many Midwest Farmers — DTN8-28

    Economist: Big Potential in China for U.S. Corn, Livestock Exports8-28

    John Deere Lays Off 460 from Waterloo, Iowa Factory8-28

    U.S. Energy: Retail Gas Prices Follow Crude Prices Lower8-28

    Gasoline Prices: Decline by 2 Cents8-28

    Propane Stocks: Up to 74.7M Barrels8-28

    Diesel Prices: Average Drops a Penny8-28

    Sugarcane Aphid In Grain Sorghum: Florida, Georgia Find Infestations8-27

    Cotton – Midsouth – Bolls Opening, Early Defoliation Nears – AgFax8-27

    Midwest Corn and Soybeans Need Warm, Clear September – AgFax8-27

    Cotton – Southeast – More Open Bolls, Lingering Pests – AgFax8-27

    Farm Groups Map Waters to Block Clean Water Act Changes – DTN8-27

    Texas: 2 More Counties Make Natural Disaster List8-27

    Southwest May Face ‘Megadrought’ This Century, Say Scientists8-27

    China’s Citizenship Reform Should Benefit Farmers — DTN8-27

    What Can We Learn about Corn, Soybean Yields from Crop Tours?8-27

    Consider Sulfur for Your Fertility Plans This Fall — DTN8-27

    Rough Rice: Stocks Down 13 Percent from August 2013 — USDA8-27

    South Carolina: Peanut Field Day, Blackville, Sept. 48-27

    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