Wednesday, April 11, 2012

Arkansas: Early Spring May Yield Extra Generation of Insects

AgFax.Com - Your Online Ag News Source


Arkansas farmers need to budget now for one, and possibly two extra insecticide applications this growing season, as the early spring is expected to provide more time for a crop pests to create an extra generation.

“This is one of the earliest springs we’ve seen in a long time,” said Gus Lorenz, extension entomologist for the University of Arkansas System Division of Agriculture. “The warmer-than normal-temperatures have allowed insects to get an early start this year. They’re developing at a faster-than-normal rate.”

Insects are expected to have an extra generation this growing season.

Insects that may produce three generations during a growing season “may have a fourth and part of a fifth,” he said. “That may not sound that bad on the surface, but with every new generation, they build up bigger numbers.”

One such pest is the tarnished plant bug, which Lorenz called the No. 1 pest of cotton.

“They’re at huge numbers, much higher than what we usually see at this time of year,” he said. “Based on our observations, we feel there is a much worse situation that’s brewing for the future.”

The higher numbers will mean more spraying.

“Generally, speaking a tarnished bug application will be $8-12 an acre,” Lorenz said. “What this means is increased costs to growers and a more expensive crop.

“It’s nothing we can’t handle. Our growers can manage, but it’s a matter of being able to budget another insect application or two to get a handle on the problem and growers should be prepared for that eventuality,” he said. The downside to extra applications is the loss of beneficial insects that can keep the pests in check.

More sprays early in the season “causes secondary insects like aphids, mites, and even bollworms to become worse,” Lorenz said.

Host Plants

The warm temperatures have accelerated growth of host plants, providing a feast for the early insects. The warmth also accelerated growth of winter wheat, a crop that unfortunately is serving as a host plant for armyworms that arrived in Arkansas a full month earlier than normal, Lorenz said.

Lorenz predicted that “if that wheat field is next to a corn field or a rice field that’s emerging, the armyworms will leave the wheat and go across the turnrow or the highway and go into that seedling crop and eat it right down to the ground, past the growing point. Growers will lose their stand.”

Scouting fields for armyworm activity is of primary importance – and not just in the lower canopy of wheat, but also in the dirt.

“It’s extremely important where rice, or other small grains like corn and milo are growing that you monitor that and be prepared for the armyworms to go across the road,” Lorenz said. “I’ve seen them crossing the road so thick, the road would get slick from people driving and crushing them. They don’t call them armyworms for nothing.”

Armyworms are also masters of the disappearing act.

Lorenz told of one producer with a damaged wheat crop who thought the worms were gone.

“I told him to lift up the dead grass on the ground and tell me what you see. He lifted it up ad said, ‘they’re everywhere!’” Lorenz said.

“Armyworms are like the vampires of the insect world. They don’t like the sunshine,” Lorenz said. The worms will often seek shelter under rocks or clods of dirt. “Fifty or 60 can cram underneath a dirt clod” the size of a half-dollar.

Chuck Wilson, director of the Rice Research and Extension Center in Stuttgart, said pyrethroids were the product of choice and warned producers to spray as late in the day as possible.

“Pyrethroids break down in sunlight, so late in the day spraying will help maintain activity when the armyworms come out at night.”

Growers should consult the MP-144 “Insecticide Recommendations for Arkansas,” or their county agent.

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

    Rose on Cotton: We told you. Old Crop is Too Cheap.4-24

    GMOs – Why Some People Lose Reason About The Technology4-24

    Dow’s Enlist Weed Control – How the System Works4-24

    Grain TV: Brazil Trucker Strike Flares Up Slightly4-24

    Rice Progress: Wet Weather Issues, Planting Delays and Flooded Fields4-24

    DTN Livestock Close: Aggressive Short Covering4-24

    Rice Market: Overbearing Carryover Strain Continues4-24

    New Technology: Can it Help You Cut Costs? Consultants Talk About It. – AgFax Midwest Grain4-24

    Southern Corn Crop – Plenty Of Acreage Still In The Sack – AgFax4-24

    AFB Grain-Soybean Close: Weather Pulls the Rug Under Prices4-24

    AFB Cotton Close: Strong Exports a Boon to Prices4-24

    AFB Rice Close: Exports Unable to Spark Buying4-24

    DTN Grain Close: Favorable Weather Easing Concerns4-24

    Monsanto, Pioneer Genetically Modified Traits Approved by EU – DTN4-24

    USDA: Peanut Price Highlights4-24

    China’s Ag Production: More Corn, Wheat, Rice, Cotton, Less Soybeans4-24

    John Deere: Your Tractor But Not Your Software – DTN4-24

    Dried Distillers Grain: Salt Supplements Save Pasture Grass – DTN4-24

    DTN Livestock Midday: Limited Trade Volume4-24

    Texas: Wheat Field Day, Chillicothe, May 134-24

    Weekly Cotton Market Review – USDA4-24

    DTN Grain Midday: Demand Concerns Promote Selling4-24

    DTN Cotton Open: Cash Grower Sales Resume4-24

    FMC Corporation Completes Acquisition of Cheminova4-24

    Indiana: No-Till and Cover Crops – A Farmer’s View – Video4-24

    DTN Livestock Open: Support from Spillover Buying4-24

    DTN Grain Open: Soybeans Fail to Hold Near Session Highs4-24

    USDA Plan to Lower Greenhouse Gases is a ‘Very Big Deal’ – DTN4-23

    Biofuels: Senators Urge for RFS to Continue Industry Growth – DTN4-23

    U.S. Drought Monitor Quick Look Video – AgFax4-23

    ELS Cotton Competitive Payment Rate Is Zero4-23

    DTN Cotton Close: Strong Exports, Heavy Trade4-23

    Chumrau on Wheat: Competitive Factors Pressuring U.S. Export Pace4-23

    Moving Grains: Barge Rates Down on Improving River Conditions4-23

    U.S. Drought Monitor: Strong Rains in Southeast, Great Plains4-23

    Good on Grain: Spring Wheat Yield Expectations – What Does History Teach Us?4-23

    Alfalfa: From Bone Dry to Fairly Decent Moisture – DTN4-23

    Cutworm Moths on the Move, Don’t Bet on BT Hybrids or Seed Treatments – DTN4-23

    California Oat Hay: Barley Yellow Dwarf Virus Hits Hard, Some Varieties More Tolerant4-23

    Bird Flu: Poultry Produces Watch for Symptoms, CDC Says – DTN4-23

    Irrigation Systems: Are All Your Systems Go?4-23

    Grain TV: Traders Eye Cold Weather in the Midwest4-22

    Residential Propane, Heating Oil: Inventories Increase4-22

    Diesel: Prices Increase Across U.S.4-22

    Gasoline: Average Price Up from Last Week4-22

    U.S. Energy: May Tight Oil Production Expected to be Lower than April’s4-22

    Weed Management: A Regional Approach – Farmdoc4-22

    3 Things to Know About the Current Highly Pathogenic Bird Flu Outbreaks – USDA4-22

    Utah: 2 Counties Declared Natural Disaster Areas Due to Drought – USDA4-22

    Oregon: 4 Counties Declared Natural Disaster Areas Due to Drought – USDA4-22

    USDA’s Hands Tied on Cuban Trade Promotion – DTN4-22

    Soybeans: 5 Million Bushles Ending Stocks Not Helping Prices – Rabobank4-22

    Tree Nuts: U.S. Exports to China Are Down, Prices Remain High – Rabobank4-22

    Corn Market: Next Big Price Factor is Spring Planting – Rabobank4-22

    Fertilizer Market: Prices Decline; Growers Using Less to Do More – Rabobank4-22

    Rice Market: CA Growers Expect Water Cuts; Southern Acreage May Increase – Rabobank4-22

    Cotton Market: Neutral on Old Crop, Bullish New Crop – Rabobank4-22

    Pest Management: 9 Facts Concerning Black Cutworms Popping Up in the Midwest4-22

    Indiana and Nebraska: Weather Challenges are Like Water Off a Duck’s Back to Seasoned Farmers – DTN4-22

    Wheat: Efficacy of Fungicides, Timing Matters4-22

    Herbicide Resistance: Tank Mixing the Key to Control – DTN4-21

    Illinois Corn: Projected Revenues for 2015 – Farmdoc4-21

    Soil Health: Testing Ideas – Are They Worth the Money? – DTN4-21

    Sweet Potatoes Could be an Example of Natural GMOs4-21

    Drought: New Stress Detecting Sensors Help Manage Water Use4-21

    Kentucky: Cover Crop Burndown Tips; Worms and Weevils on the Rise4-21

    USDA: Weekly National Peanut Prices4-21

    Herbicide Resistance: Slowing Weed Evolution with Management Practices4-21

    Grain Sales Direct To Buyer? AgriCharts Rolls Out A Platform.4-21

    Sunbelt Ag Events

    Rice News

     

    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

    Owen Taylor Debra L. Ferguson Laurie Courtney

          

    Circulation Questions?

    Contact Laurie Courtney +