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

    Midwest Corn And Soybean Yields – Our Readers’ Reports – AgFax11-22

    Rice Comment: The Case for Neonicotinoid Seed Treatment11-22

    U.S. Rice: Rain Stalls Texas 2nd Crop Harvest; Crop Sales Continue11-22

    Rice Market: Sale to Iraq Moves the Market11-22

    AgFax Grain Review: Syngenta Lawsuits Pile Up; GMO Seed Companies Sue Hawaii11-21

    Rose on Cotton: Looking for the Positives This Week11-21

    Grain Drying: What Happens After Sudden Temperature Drop?11-21

    Is Your Lifestyle Costing You the Farm?11-21

    Grain TV: Lower Barge Rates Boost Basis Levels11-21

    DTN Livestock Close: Cattle Futures Solidly Higher11-21

    Farmers Storing Grain Need to Weigh Risk Management Factors – DTN11-21

    Peanut Harvest Updates From Southeast, Delta And Southwest – AgFax11-21

    Cleveland on Cotton: 57 Cents – ‘The Bottom is In’11-21

    Ag Labor: Immigration Order Provides Little Long-Term Benefit – DTN11-21

    Doane Cotton Close: Decline in Chinese Production Offers Support11-21

    AFB Grain-Soybean Close: Strong Soybean Gains, Little Movement in Corn, Wheat11-21

    Southern Soybean, Corn Harvest Reports, Round One – AgFax11-21

    AFB Cotton Close: Futures Rebound11-21

    AFB Rice Close: Prices See More Slight Gains11-21

    DTN Cotton Close: Settles Higher on Light Volume11-21

    DTN Grain Close: Soybeans Boosted by Demand11-21

    USDA: Peanut Price Highlights11-21

    Oklahoma Pecans: Deliveries Remain Light11-21

    Georgia Pecans: Buying Interest Very Active11-21

    Ag Policy: Farm Bills Need Long-Term View11-21

    Cotton Market Weekly Review by Region11-21

    DTN Livestock Midday: Cattle Futures Surge Higher11-21

    A Closer Look at Impacts of Olympic Averaging of Prices and Yields11-21

    Arkansas Cattle: Ranchers Should be Alert to Acorn Poisoning11-21

    DTN Grain Midday: All 3 Commodities Go Higher11-21

    Economist: Livestock Industry Will Have Strong Rebound11-21

    DTN Dried Distillers Grain: Cheaper Feed Source for Beef Producers?11-21

    Mississippi Outdoors: Common Deer Parasites Do Not Affect Venison11-21

    DTN Cotton Open: Trades Higher after No Notices Issued11-21

    AgFax Wildlife Review: New E-Book Offers Tips for Gardening in South11-21

    DTN Livestock Open: Cattle Futures to Start Mixed11-21

    Weather Challenges Florida and Iowa Farms — DTN11-21

    Vilsack: Immigration Order Creates ‘Stability’ in Ag Work Force — DTN11-21

    DTN Grain Open: Lower Start Across Board11-21

    Keith Good: What’s Next for Meat Labeling?; Sugar Prices Take Tumble11-21

    Texas Cotton Harvest – Still Some To Go – AgFax11-20

    Mississippi: Water Conservation Summit, Stoneville, Dec. 1011-20

    Farm Internet Service Still Slow or Non-Existent, But Improving – DTN11-20

    Yield: Important Factor in Your Irrevocable Farm Program Choice11-20

    U.S. Grain Transportation: Weekly Inspections Reach Record11-20

    U.S. Drought Outlook: Improvements Expected for California, Southwest11-20

    U.S. Energy: Planned Refinery Maintenance Light in 201411-20

    Propane Stocks: Post Slight Increase11-20

    Gasoline Prices: Decrease by 5 Cents11-20

    Diesel Prices: Average Drops 2 Cents11-20

    Livestock: Arctic Chill Catches Markets Flatfooted – DTN11-19

    Farm Runoff Targeted for Regulation Following Algal Bloom Shutdown – DTN11-19

    Soybeans: China May Import More Non-GMO Beans – DTN11-19

    Mississippi Outdoors: Free Apps Can Aid Deer Hunters11-19

    Big River Rice And Grain Enhances, Expands Facilities In Arkansas, Louisiana11-19

    Farm Bill Commodity Program: Decisions and More Decisions11-18

    Young Farmers: USDA is the ‘Lender of 1st Opportunity’ – DTN11-18

    Tax Extenders: Farm Groups Push Congress to Renew Section 179 This Year – DTN11-18

    AgFax Rice Review: Iraq Passes on U.S. Rice; Australia, China Sign FTA11-18

    USDA: Weekly National Peanut Prices11-18

    DTN Fertilizer Trends: Prices Show Little Movement11-18

    North Carolina: Bt Resistant Armyworms Migrating North11-18

    Georgia Cotton Commission Meeting, Production Workshop, Tifton, Jan. 2811-18

    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