Agfax Buzz:
    August 2, 2013
    Brown marmorated stink bug fifth instar nymph. (Photo by Stephen Ausmus, USDA APHIS).

    South Carolina: Stink Bug Pressure in Cotton, Kudzu Bugs in Soybeans

    AgFax.Com - Your Online Ag News Source

    By Jeremy Greene, Clemson Extension Entomologist

    News from Above the Lakes

    David DeWitt, county agent in the Pee Dee Region, reported that “it has been fairly quiet my way. Several are spraying some cotton but more out of habit than heavy pressure. Have seen and heard of some kudzu bugs but populations seem less than past two years. We had a lot (1000′s of acres) of soybeans not get planted because of rain…” He also asked if our insects will be bottlenecked into the acres we do have in the ground.

    News from Below the Lakes

    Charles Davis, county agent in Calhoun County, and Jonathan Croft, county agent in Orangeburg County, were with our new agent, Rebecca Hellmuth, in some cotton this morning in Orangeburg County and noticed some stink bugs and boll injury at threshold. They noticed high-clearance sprayers “in fields where they could get.”

    Cotton Insects

    Check fields for stink bugs. There are plenty out there. If fields are still in the 3rd to 5th week of bloom, they need to be aggressively protected against stink bugs. The dynamic boll injury threshold calls for treatment when boll injury meets or exceeds 10% during those weeks of bloom (WOB).

     WOB1

    WOB2

    WOB3

    WOB4

    WOB5

    WOB6

    WOB7

    WOB8

    50%

    30%

    10%

    10%

    10%

    20%

    30%

    50%

    Soybean Insects

    I just evaluated two efficacy trials for kudzu bugs this morning. Kudzu bugs were about the only pest species in those plots. We saw a few soybean loopers and stink bugs.

    Bifenthrin (Discipline or Brigade in these trials) at either 4.0 or 6.4 fl oz per acre was very good as always. Products with other pyrethroid active ingredients (Warrior II, Hero, Endigo, Mustang Max, Endigo, Fastac, Declare, Cobalt Advanced, Stallion) produced acceptable control also. It appeared that Carbine and Transform were misses on kudzu bugs at 3DAT1.

    Bollworm & Tobacco Budworm

    Captures of bollworm (BW) and tobacco budworm (TBW) moths in pheromone traps at EREC this season are shown below, as are the captures from 2010 to 2012 for reference. Tobacco budworm continues to be important for our soybean acres and for a very limited number of non-Bt-cotton acres. graph_legendI provide these data as a measure of moth activity in our local area as an indication of moth presence and activity near my research plots. The numbers are not necessarily representative of the species throughout the state.

    pheromone_trap_capture_13-12

    Click Image to Enlarge

    pheromone_trap_capture_11-10

    Click Image to Enlarge

    I think our patterns of capture are looking like those experienced in 2010. If you remember that year, we had significant pressure from bollworm. We also had high numbers of tobacco budworm in the system that year. Captures of tobacco budworm moths are also looking to be high to end this season. Check soybeans for them.

    Crazy Weather

    I put together the precipitation total that we have had here at Edisto for 2013. That and the long-term average for Blackville, SC, are shown in the table. Although we have received a surplus of rain, we have been more fortunate than other areas of the state that have received significantly more rain. We are approaching a year’s worth of rain here at EREC, and other areas of the state have already exceeded their long-term yearly average!

    south_carolina_rainfall

    Click Image to Enlarge

     

     WOB1

    WOB2

    WOB3

    WOB4

    WOB5

    WOB6

    WOB7

    WOB8

    50%

    30%

    10%

    10%

    10%

    20%

    30%

    505

    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

    DTN Cotton Close: Settles in Red Beyond May Contract4-23

    Texas Cotton: Preplant Burndown and Incorporated Weed Control Options4-23

    Oklahoma’s Bryan County Declared Natural Disaster Area4-23

    Texas Qualifies as Primary Natural Disaster Area4-23

    AgFax Cotton Review: Chinese Policy Affects Global Markets; A History of Production in Arizona4-23

    Family Owned Cotton Mill Closes. You’ll Never Guess the Location.4-23

    Sierra County, New Mexico Added to Natural Disaster List4-23

    Virginia Cotton: Forecasting May Temperatures4-23

    DTN Cotton Open: Tumbles in Most-Active July4-23

    Senate Expected to Pass Upcoming Tax-Extenders Bill – DTN (Updated)4-23

    Georgia Cotton: Irrigation App Can Help Save Water4-23

    Keith Good: Are Grain Producers Braced for Downturn?; El Nino in July?4-23

    Doane Cotton Close: Futures Continue Slow, Steady Ascent4-22

    AFB Cotton Close: Prices Continue Higher4-22

    Cotton: Smaller Pima Plantings Expected for 2014/154-22

    DTN Cotton Close: Strong Old-Crop Gains4-22

    Texas Crop Weather: Most Pecans, Peaches Undamaged by the Freeze; Jury Still Out on Wheat4-22

    DTN Fertilizer Trends: Prices Higher for 9th Straight Week4-22

    Tennessee: Row Crop Planting Still Off to Rough Start – USDA4-22

    North Carolina Cotton: Timing of 2,4-D and Dicamba Burndown4-22

    DTN Cotton Open: Posts Triple-Digit Old-Crop Gains4-22

    Keith Good: Winter Wheat Conditions Worsen; Planting Progress Sluggish4-22

    Doane Cotton Close: Quiet, Low Volume Day4-21

    New Mexico: Preparing for Planting on Irrigated Fields – USDA4-21

    Arizona: Cotton Planting Over Half Finished – USDA4-21

    South Carolina: Planting Makes Good Progress Before Weekend Rains – USDA4-21

    Oklahoma: Record Breaking Cold Damages Small Grains – USDA4-21

    Texas: Planting Continues in Dry, Windy Conditions – USDA4-21

    California: Cotton Planting Nears Completion, Rice Planting Begins – USDA4-21

    AFB Cotton Close: Mixed on Outside Pressure4-21

    Alabama: Rains Hamper Field Work – USDA4-21

    Chemtura AgroSolutions Acquired by Platform Specialty Products4-21

    DTN Cotton Close: Settles Lower in Most Contracts4-21

    Georgia: Rains Drown Corn, Lay Out Small Grains – USDA4-21

    Virginia Cotton: Targeting the Best Planting Window4-21

    DTN Cotton Open: Trades Slightly Lower in Quiet Dealings4-21

    Flint on Crops: Reniform Nematode Continues to Plague Us4-21

    Keith Good: Citrus Disease Bites Florida; USDA to Track All PEDv Cases4-21

    Georgia: Chemical Mixing Problems4-18

    Arctic Warming Tied to Our Extreme Weather? Maybe. – DTN4-18

    Keith Good: China’s Secret – Contaminated Farmland; Expect Drought Persistence4-18

    Cleveland on Cotton: Nervous Market Nellies; Chinese Plant 20-25% Less4-17

    Doane Cotton Close: Heavy Volatility Continues in Old-Crop Prices4-17

    AFB Cotton Close: New-Crop Continues to Show Strength4-17

    DTN Cotton Close: Finishes Mixed Ahead of Long Weekend4-17

    U.S. Drought Outlook: Improvement Expected in Midwest, Central and Southern Great Plains4-17

    DTN Cotton Open: Trades Slightly Lower Nearby4-17

    U.S. Energy: Oil and Gas Spending Favors Exploration, Development4-17

    Gasoline Prices: Average Jumps 6 Cents4-17

    Propane Stocks: Increase by 0.8M Barrels4-17

    Diesel Prices: Average Down a Penny4-17

    Keith Good: Beige Book — Observations on Ag Economy4-17

    Keith Good: China’s Rejection of GMO Corn May Have Cost U.S. Ag $2.9B4-17

    Doane Cotton Close: Strong Finish Despite Continued Dry Weather4-16

    AFB Cotton Close: Regains Losses and Then Some4-16

    DTN Cotton Close: Triple-Digit Old-Crop Gains4-16

    DTN Cotton Open: Futures Trading in Green4-16

    Keith Good: Cold Snap on East Coast Troubling; Wheat Futures Up Again4-16

    Doane Cotton Close: Market Gives Back Gains4-15

    AFB Cotton Close: Prices Move Lower4-15

    DTN Cotton Close: Loses Ground as Intercrop Spreads Narrow4-15