Tuesday, October 02, 2012
arkansas_wheat_field

Indiana: Specialist Warns Wheat Farmers To Observe Fly-Free Planting Dates

AgFax.Com - Your Online Ag News Source


Although many U.S. crop fields already have been harvested because of the drought, farmers still need to follow fly-free dates when planting wheat to avoid Hessian fly infestations in their winter crops, says a Purdue entomologist and Agricultural Research Service scientist.

Those dates already have passed in the northern Midwest, but can be as late as the end of October in the southern U.S. Indiana’s fly-free dates are as late as Oct. 9 in the southern part of the state and Oct.6 in Ohio.



“It’s imperative that we don’t jump the gun,” Brandi Schemerhorn said. “It’s tempting given the open fields early in the season to plant wheat early, but this could lead to disastrous consequences. The fly-free date is our main protection to avoid an infestation by the spring brood.”

Hessian flies are small pests that are mosquito-like in appearance. There are at least two generations each year, one in fall and another in spring. The fall generation is more important economically because the larvae feed on green plant growth, including developing wheat crops.

Females can lay 150-300 eggs in a short time on the sides of wheat plants. The larvae will crawl downward into the whorl and begin feeding. Farmers inspecting their fields often miss the flies because they are hidden at the bottom of the plant.

“Just because you don’t see them in the field doesn’t mean they’re not there,” Schemerhorn said.

While the pests never enter the stem, they damage the plant so severely that infested stems usually break once the heads begin to fill. This, along with stunted growth caused by the flies, can lead to reductions in yield.

Schemerhorn said planting after the fly-free date is the best way to prevent infestation. After these dates, most adult flies will die before the wheat emerges and therefore will not lay more eggs.

“Even if you spray insecticide, that’s not going to get rid of them because the chemicals can’t reach the larvae,” she said.

Farmers observing the fly-free date for their regions could also help with other problems that their crops may experience.

“It has been shown that following the fly-free date helps reduce other wheat disease problems and reduces winter-kill from excessive growth,” Schemerhorn said.

She offered other Hessian fly management tips:

*Clear fields of volunteer wheat. Flies can lay eggs in the early plants and rapidly build up their populations. Removing volunteer wheat before the emergence of the fall brood greatly reduces the insect reservoir for a spring infestation.

*Plant resistant varieties of wheat, even after the fly-free date. Warmer temperatures in the late summer and early fall may extend fly activity beyond the normal fly-free date.

*After harvesting wheat in the spring, plow under the stubble instead of burning. Plowing fields after harvest destroys the fly. It buries adult flies and limits the number that can escape from the ground.

The Hessian fly is always around, but in some years the damage is more widespread than others. Schemerhorn said it’s always a problem in the southeastern United States, but damage in the Midwest varies from year to year. In Indiana, the female lays its eggs from August to October.

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

    DTN Livestock Open: Cattle Complex Staged for Bullish Start7-28

    DTN Grain Open: Soybeans Start 10 Cents Higher7-28

    Keith Good: July 1 Cattle, Calf Inventory Comes in at Historic Low7-28

    USDA Commentary: Weekly Cotton Markets, Weather by Region7-25

    Rose on Cotton: No Pleasure in this Market Made for Bears7-25

    Rice Market: U.S. Futures Decline as Global Prices Rise7-25

    Rice Crop: Harvest Begins Slowly in Louisiana and Texas7-25

    Rice Commentary – Rice Farmers Need to Consider a New Business Plan7-25

    Leave Your Guns at the House, Boys.7-25

    DTN Livestock Close: Cattle Futures Explode to New Highs7-25

    Doane Cotton Close: Futures Continue Lower After Midweek Rally7-25

    AFB Grain-Soybean Close: Soybeans Mixed, Wheat, Corn Gain Slightly7-25

    AFB Cotton Close: Sell-Off Continues7-25

    AFB Rice Close: Futures Continue Lower7-25

    DTN Cotton Close: Settles on New Contract Lows7-25

    Peanuts: 15% Of Crop Ungathered In Key Argentine Production Area7-25

    Rail Car Delays Causing Dread Among Elevator Operators – DTN7-25

    DTN Grain Close: Wheat Prices Rally Off Lows7-25

    Catfish Production: Water Surface Acres at 63,700 Acres7-25

    USDA: Peanut Price Highlights7-25

    Arkansas: New iPhone App Simplifies Farmers’ Finances7-25

    DTN Livestock Midday: Cattle Futures Continue Higher7-25

    DTN Grain Midday: Wheat 3 to 6 Cents Up in Front Months7-25

    Taking the Risk Out of Buying Used Equipment — DTN7-25

    North Carolina: Rediscovering Grain Sorghum — DTN7-25

    Peanuts: Worms Still Building In SE; Rains Boost West’s Crop – AgFax7-25

    Shurley on Cotton: Prices Try to Stabilize, Still Show Weakness7-25

    Southern Soybean Insect Situation Gets Complicated – AgFax7-25

    DTN Cotton Open: Extends Losses in Early Going7-25

    AgFax Wildlife Review: Wild Hogs Damaging Levees in Louisiana7-25

    Ethanol: Final 2014 RFS Release ‘Imminent’ – DTN7-24

    Doane Cotton Close: Prices Break Out of Range Lower7-24

    Rice – Arkansas, Mississippi – Blast Becomes Major Concern – AgFax7-24

    New Rural Infrastructure Fund Established — DTN7-24

    U.S. Grain Transportation: Wheat Demand Increases, Inspections Rise7-24

    2014 Farm Bill Decisions: Base Acre Reallocation Option7-24

    Midwest Grain: Pull the Fungicide Trigger Now? It Depends. – AgFax7-24

    Louisiana: Sodium Nitrite Explored for Wild Hog Control7-24

    U.S. Energy: Refineries Running at Record Levels7-24

    Gasoline Prices: Show 4-Cent Decrease7-24

    Propane Stocks: Continue to Rise7-24

    Diesel Prices: Average Declines by 3 Cents7-24

    Corn: Pollination is One of Nature’s Miracle – DTN7-23

    Wheat Tour Sees One of the Best Crops in Years – DTN7-23

    10 Arkansas and 2 Tennessee Counties Designated Natural Disaster Areas7-23

    Soybeans: Is the 2014 Average Yield Headed for a New Record?7-23

    Drones Monitoring the Garden or Your Crop? One Is Legal, One Is Not.7-23

    Cotton In The Midsouth – Plant Bugs Persist As Bollworms Arrive – AgFax7-23

    Cotton – Plant Bugs, Stink Bugs Overlapping In Parts Of Southeast – AgFax7-23

    Cotton in Southwest: Blooms Spreading; Fleahopper, White Fly on the Move7-22

    USDA: Don’t Forget Farm Bill Conservation Compliance Changes7-22

    USDA: Weekly National Peanut Prices7-22

    Good Reports on Corn; Wet Weather Stressing Beans — DTN7-22

    Cattle: Nebraska Study Finds No Ill Effects from Zilmax — DTN7-22

    South Korea Importers Returning to U.S. Corn, DDGS — DTN7-22

    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