Agfax Buzz:
    May 15, 2013
    ms_grain_sorghum

    Texas Grain Sorghum: Early Fields Reaching Midge Scouting Period

    AgFax.Com - Your Online Ag News Source

    By Stephen Biles, Extension Agent-IPM, Texas A&M AgriLife, Port Lavaca

    Earlier fields of sorghum are heading and beginning to bloom. So, it is time to start looking for sorghum midge on the field margins.

    CLICK TABLE TO ENLARGE: Sorghum Midge per flowering head

    CLICK TABLE TO ENLARGE: Sorghum Midge per flowering head

    The adult sorghum midge is a small (less than 1/8 inch), orange-red fly with a yellow head, brown antennae and legs and gray, membranous wings.

    Scout fields in the morning when the temperature warms to approximately 85° F. Because adult sorghum midges live less than 1 day, each day a new brood of adults emerges. Sampling must be done almost daily during the time sorghum grain heads are flowering.

    Sorghum midge adults can be seen crawling on or flying about flowering sorghum grain heads. The simplest and most efficient way to detect and count sorghum midges is to inspect carefully and at close range all sides of randomly selected flowering grain heads.

    Inspect plants along field borders first; particularly those downwind of earlier flowering sorghum or johnsongrass. If no, or few, sorghum midges are found on sorghum grain heads along field edges, there should be little need to sample the entire field. If you find more than one sorghum midge per flowering grain head in border areas of a sorghum field, inspect the rest of the field. Sample at least 20 flowering grain heads for every 20 acres in a field.

    For fields smaller than 20 acres, sample 40 flowering grain heads.

    Sorghum Headworm Calculator: We have added a calculator to the Entomology Website to calculate the economic threshold of sorghum headworms. We are hoping to add midge and stinkbugs to this calculator soon. https://insects.tamu.edu/extension/apps/sorghumheadwormcalculator/


    Tags: , ,

    Leave a Reply

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 Your email will not be published or shared with third parties.

    Agfax Cotton News

    Mississippi Cotton: Boll Rot Not Always Caused by Bacterial Blight10-31

    DTN Cotton Open: Futures Dip Near Session Low10-31

    Keith Good: Turkey Investigates U.S. Cotton Imports, Demand May Suffer10-31

    Doane Cotton Close: Strong Exports Continue10-30

    ELS Cotton Competitive Payment Rate Is Zero10-30

    AFB Cotton Close: Futures Retrace Gains10-30

    DTN Cotton Close: Reverses off New High to End Lower10-30

    Kansas Officials Point Out Flaws in Clean Water Act – DTN10-30

    Future Farmers Face Major Challenges, Ag Sec Tells FFA – DTN10-30

    Mississippi: Fall Tests for Nematodes Help Keep Crops Healthy10-30

    DTN Cotton Open: Futures Tick Near Unchanged10-30

    U.S. Energy: Gas Prices Drop to Lowest Since December 201010-30

    Gasoline Prices: Average Drops 6 Cents10-30

    Propane Stocks: Down 1.3M Barrels10-30

    Diesel Prices: Decrease by 2 Cents10-30

    New Research Study Shows the Value of Neonics10-30

    Keith Good: Drought Impacts California Rice; Farm Land Market Cools10-30

    Doane Cotton Close: 3rd Day of Strong Gains10-29

    Texas: Pecos County Pesticide Workshop, Fort Stockton, Nov. 1810-29

    DTN Cotton Close: Jumps to 5-Week High10-29

    Georgia: Cotton Pickin’ Sunrise10-29

    Georgia: Brooks County Clean Day Rescheduled to Nov. 1210-29

    Missouri Cotton: New Interactive Map for Pest Monitoring10-29

    AgFax Cotton Review: U.S.’s High Quality Offers Market Resilience10-29

    Tennessee Cotton: Farm Bill-STAX Workshop Slated Nov. 20 in Jackson10-29

    DTN Fertilizer Outlook: Demand May Fall with Crop Prices10-29

    DTN Cotton Open: Surges to Triple-Digit Gain10-29

    Alabama Cotton: In Southern Counties, Don’t Wait Longer On Cotton Defoliation10-29

    Keith Good: Pressure Increases on EPA to Withdraw New Water Rule10-29

    Doane Cotton Close: Strong Day, Good Pricing Opportunity10-28

    AFB Cotton Close: Futures Move Higher10-28

    DTN Cotton Close: Finishes on 11-Day High10-28

    Texas Crop Weather: Sugarcane Aphids Here to Stay10-28

    Mississippi Wild Hogs: Trapping Is the Best Control Method10-28

    Virginia Cotton: Warm Weather Comes at Good Time10-28

    DTN Fertilizer Trends: Stubborn Prices Pose Dilemma for Grain Farmers10-28

    Missouri: 2014 Insecticide Survey Summary10-28

    DTN Cotton Open: Slight Gains in Quiet Dealings10-28

    Keith Good: Corn, Soybean Harvests Advance, Still Behind Average Pace10-28