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

    Rose On Cotton: Profitability In ’15? The “Ifs” Must Line Up Right.1-24

    AgFax Grain Review: Global Ending Stocks at 30-Year High; Xtend Soybeans Approved1-23

    Rice Market: Seen a Soybean Rally Lately? Some Farmers Look for Alternative Crop.1-23

    Corn: Resistant Rootworm Webinars Discuss Strategies1-23

    Cleveland on Cotton: World Plantings Need Reduction. How Much?1-23

    Farmland Values Could Stay High with Investor Interest – DTN1-23

    Livestock Manure Management Could Face Stricter Regulations – DTN1-23

    Soybeans: Tighten Belts to Survive Market Downturn – DTN1-23

    DTN Livestock Close: Lean Hogs Plunge to New Contract Lows1-23

    Texas Ag Forum, Austin, Feb. 201-23

    Welch on Wheat: Conditions Deteriorating but Still Mostly Positive1-23

    Louisiana Rice: Stored Insect Pest Management Workshop, Crowley, Feb. 251-23

    AFB Grain-Soybean Close: Corn Turns Higher, Wheat, Soybeans Continue Declines1-23

    AFB Cotton Close: Futures Chart bearish Key Reversal1-23

    AFB Rice Close: Futures End Just Above Support1-23

    USDA: Peanut Price Highlights1-23

    DTN Cotton Close: Reverses to Finish on New Low1-23

    Welch on Grain: Corn Export Sales Hit Marketing Year High1-23

    DTN Grain Close: Markets Mixed as Dollar Continues Higher1-23

    DTN Livestock Midday: Cattle Futures Hold Limit Losses1-23

    DTN Grain Midday: Corn Higher, Beans and Wheat Mixed1-23

    John Deere Indefinitely Lays Off 910 In Ag Assembly Plants1-23

    Mississippi Outdoors: Winter a Good Time for Fish Habitat Improvements1-23

    DTN Cotton Open: Hits New Session Highs on Robust Sales1-23

    U.S. Grain Transportation: Corn, Wheat Inspections Increase Markedly1-23

    DTN Dried Distillers Grain: China, Food Safety Act to Shape Outlook1-23

    DTN Livestock Open: Futures Set to Start Lower1-23

    DTN Grain Open: Markets Start Out Jittery1-23

    Keith Good: World Grain Inventories Headed for Highest in 30 Years1-23

    Doane Cotton Close: New Sales Continue to Drive Bearish Drop1-22

    Grains: Crop Insurance Payment Indicators Based on Jan. WASDE1-22

    U.S. Energy: Falling Gasoline Prices Linked to Crude Oil, Other Factors1-22

    Residential Propane Price Increases, Heating Oil Declines1-22

    Propane Stocks Fall Over 3M Barrels1-22

    Gasoline Prices Continue Downward1-22

    Farming and Bankruptcy – 9 Lessons You Need to Know1-22

    Diesel Drops Below $31-22

    Old World Bollworm Coming Soon to U.S. Mainland — DTN1-22

    Cotton: Monsanto’s New Herbicide Tolerant Variety Approved1-22

    Base Acre and Yield Updating Decisions Due by Feb. 271-22

    Kansas: Central Plains Irrigation Conference, Colby, Feb. 17-181-22

    CHS, Northern Partners Cooperative Announce Expansions In Louisiana, Illinois1-22

    Mississippi: Quail, Turkey Management Workshop Feb. 27 in Jackson1-22

    Ag Policy: Trade May Be Only Bright Spot in 2015 Politics – DTN1-21

    Montana: Ranch Legacy Survives Salty Soils, Water Shortages – DTN1-21

    North Dakota: Heitkamp Pushes for Rail Improvements1-21

    Soybeans After Soybeans Can be Problematic — DTN1-21

    Row Crop Margin Squeeze: 12 Strategies To Help You Survive1-21

    Texas Pecans: Good Demand, Variable but Improving Quality1-21

    Western Region Pecans: Good Demand with Moderate Deliveries1-21

    Louisiana Pecans: Harvest, Sales Mostly Finished1-21

    Family Farm Bankruptcy Clarification Act – 2 Important Points for Hard Times1-21

    Farmland Values Still Historically High in the Longterm – Regional Report1-20

    DTN Fertilizer Trends: Prices Edge Higher1-20

    Farm Taxes: Bill to Eliminate Capital Gains from Post-Bankruptcy Sales – DTN1-20

    Nebraskans Continue to Fight Keystone, TransCanada Kick-Starts Eminent Domain – DTN1-20

    USDA: Weekly National Peanut Prices1-20

    Taxes: Recent Developments in Treatment of CRP Payments1-20

    Good on Grain: USDA Reports Raise Issues for Corn, Soybeans1-20

    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