Tuesday, June 10, 2014
virginia-asiatic-garden-beetles-06282012-featured

Ohio Corn: Asiatic Garden Beetles Continue to be an Issue

AgFax.Com - Your Online Ag News Source


Grubs of the Asiatic Garden Beetle (Maladera castanea) have been making their presence known in Northwest Ohio corn fields since 2012.  For a long time this grub has been a pest in the lawn and turf industry, but in past few years it has severely damaged corn.

This beetle is similar to most in its life cycle having four stages of egg, larva (or grub), pupa and adult.  Currently, the third instar larva are feeding on root systems, specifically the mesocotyl.

Damaged fields often have gaps in rows, and affected corn often appears wilted and stressed.




In Ohio, damage appears to be most prevalent in sandier soils, which are concentrated in NW Ohio, but can also be found in isolated areas near sandy river beds.  This year we have been seeing them since approximately the third week of May, and now is the time to scout for this pest.  Look for corn in sandy soils that appear to have uneven growth stages, are wilting, or with gaps in the row.  Dig around the plant and look for the presence of white grubs.

Asiatic garden beetles are typically smaller and more active than other grubs and also have a white “bubble” near the head. If uncovered from the soil surface, the grubs try to move quickly back underneath the soil.  At this point in time, the grubs can be found within the first 1-2 inches of soil and often create tunnels around the root system of the corn–you may also find them in between rows.  In mid-June we anticipate the larva to pupate and by July, adult beetles will begin emerging to lay eggs all over again.

While the turf and ornamental industry has dealt with these insects for some time, we have much to learn about this insect, its management and the thresholds for economic damage as they relate to growing corn.  While there are some ways to trap for Asiatic Garden Beetle larva, at this point in time, it is just necessary to get out into your corn fields and dig for the larva in those sandier soils.  We suggest starting with your no-tilled fields and fields without soil applied insecticide first.

We are still making observations and at this time there don’t seem to be any “silver bullets” for controlling this pest. Many things are part of the discussion and research plots including tillage, seed treatments, insecticide, rotational programs and more.  There are also no rescue treatments available besides replanting.

Please conduct a stand count before considering replanting.  It is suggested to use the re-plant calculator (here), written by Emerson Nafziger and Bob Nielson, from Illinois and Purdue, respectively.  If you have questions on this new pest, please contact Eric Richer (richer.5@osu.edu) or Andy Michel (Michel.70@osu.edu).


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

    Grain TV: Volatile Day Ends Mostly Lower10-22

    DTN Livestock Close: Futures Move Back Higher10-22

    Alabama: Recent Weather Radar Oddity Was Mayfly Swarm10-22

    Doane Cotton Close: No New Fundamental News10-22

    Soybean Harvest: Prioritize Shatter-Prone Fields – DTN10-22

    Ethanol: Court Tosses E15 Labeling Lawsuit – DTN10-22

    AFB Grain-Soybean Close: Wheat Continues Higher, Slight Losses in Corn, Soybeans10-22

    AFB Cotton Close: Inside Day Turns Negative10-22

    AFB Rice Close: Futures Mostly Higher10-22

    Georgia: 2 Counties Declared Natural Disaster Areas10-22

    Arkansas: 2 Counties Designated Natural Disaster Areas10-22

    DTN Cotton Close: Mixed on Light Volume10-22

    DTN Grain Close: Wheat Higher, Corn, Soybeans Pull Back10-22

    AgFax Grain Review: More Lawsuits Against Syngenta; Harvest Well Behind Pace10-22

    DTN Livestock Midday: Hog Futures Lead Complex Higher10-22

    2 Families, 2 Approaches to Building Ranch Tourism — DTN10-22

    DTN Grain Midday: Trade Firm but Off Highs10-22

    Don’t Just Piggy-Back on Others’ Prices in Ag Commodity Markets10-22

    DTN Cotton Open: Higher in Subdued Dealings10-22

    DTN Livestock Open: Trade Off to Sluggish Start10-22

    DTN Grain Open: All 3 Commodities Begin Higher10-22

    National Cotton Council Commends Timely APH Announcement10-22

    Keith Good: APH Yield Exclusion Implementation Draws Praise — Mostly10-22

    Grain TV: Positive News for Soybeans10-21

    Wheat Growers to Seek Inclusion in APH Yield Exclusion for 2015 – DTN10-21

    Farm Shop Dream Requires Thoughtful Planning – DTN10-21

    USDA: Weekly National Peanut Prices10-21

    USDA to Implement APH Yield Exclusion for 2015 Spring Crops10-21

    Arkansas: USA Rice Outlook Conference Set Dec. 7-9 in Little Rock10-21

    AgFax Cotton Review: Lower Acres May Close Mill; Australia Acres Up10-21

    DTN Fertilizer Trends: High Costs May Alter Growers’ Tactics for 201510-21

    Herbicide Resistant Weed Summit’s Slides, Webcast Available Online10-20

    Rice and Sugar: Thailand’s Quest for World Domination10-20

    AgFax Peanut Review: NM Down 6M Pounds as State Celebrates 100 Year Crop10-20

    Livestock: WTO Rules Against U.S. in COOL Dispute — DTN10-20

    Wheat Scientists, Breeders Advocate Biotech Crop — DTN10-20

    Good on Grain: Storage Issues May be Less Severe Than Anticipated10-20

    Brazil Soybeans: Planting Falls Further Behind — DTN10-20

    Flint on Crops: Cover Crops Provide Many Benefits10-20

    New Holland Combine Sets Guinness Harvest Record10-18

    Rice Market: Sideways Movement Continues10-17

    Rice Crop: Delta Region Saw Harvest Delays with Storms10-17

    Rose on Cotton: Dec Contract Still Under Pressure10-17

    Cleveland on Cotton: Exports Lowest in ‘My Memory’10-17

    Brazil: Beef Production Steps Up Over Next 10 Years10-17

    Soybeans: Neonic Seed Treatment Little or No Benefit, says EPA – DTN10-17

    Informa Forecast: Soybean Acres Up 4.3M in 2015 – DTN10-17

    DTN Grain Close: Prices Down for the Day, Positive for the Week10-17

    Crop Margins Tighten, Living Expenses Not Far Behind10-17

    USDA: Peanut Price Highlights10-17

    Georgia: 6 Counties Declared Natural Disaster Areas10-17

    Livestock: WTO Ruling on Country of Origin Labeling Expected Soon — DTN10-17

    U.S. Energy: Narrowing Brent-WTI Spread Impacts Global Crude Markets10-17

    Gasoline Prices: Show 9-Cent Decline10-17

    Propane Stocks: Rise by 0.7M Barrels10-17

    Diesel Prices: Average Decreases 4 Cents10-17

    Georgia Blueberries: State Leads Nation in Production — 96M Pounds10-17

    Farm Bill Contingency Plans: How Optimistic are You? – DTN10-16

    Arkansas Agriculture Secretary Calhoun Retiring10-16

    Georgia: Waste Pesticide Disposal, Quitman, Oct. 3010-16

    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