Thursday, July 03, 2014
greensnapped_corn_university_of_tennessee

Indiana Corn: Assess Likelihood of Recovery from Wind Damage

AgFax.Com - Your Online Ag News Source


corn windStorms packing strong winds have rolled through Indiana in recent days, causing quite a bit of damage to the corn crop in some fields.

The damage includes minor leaning or bending of plants, outright uprooting of plants (root lodging), and the so-called “green snap” phenomenon where stalks literally break off or snap above a stalk node (often below the harvestable ear).

The crop is particularly vulnerable to such damage from strong winds when it is in the latter stages of the rapid growth phase prior to pollination, wherein overall plant and root dry matter increases rapidly but more importantly, stalk internode elongation occurs very rapidly. Rapid elongation of the stalk internodes (the tissue between the stalk nodes or “joints”) often outpaces the lignification of the same tissue. The development of lignins provide the structural strength to the stalk.

Assessing the damage and predicting the eventual effect on grain yield from such damage can be challenging. The one certain advice that can be given is that such assessment should not be done the day after the storm. Rather, you should wait at least 4-5 days to allow the damaged plants to demonstrate whether or not they will recover.

1. Simple leaning or bending of plants caused by strong winds represents the least of the damage. Such plants should recover most, if not all, of their uprightness, and if this recovery occurs prior to pollination, there should be little effect on the success of pollination. However, if the damage occurred near the onset of pollen shed and silking, then there may be some “shading” of the exposed silks (relative to pollen capture) by the leaves and stalks of neighboring lodged plants, and pollination may not occur successfully.

corn roots2. Plants that are root-lodged often recover by “goose necking” or gradually returning to uprightness. Much like the assessment of plants that are simply leaning from wind, if the “goose necking” of root-lodged plants does not occur before the onset of pollen shed and silking, then there may be some “shading” of the exposed silks by the leaves and stalks of neighboring lodged plants, and pollination may not occur successfully.

3. The likelihood that “green snapped” plants will recover is obviously low. Plants snapped off below the harvestable ear clearly represent green snapdirect loss of yield potential, but plants snapped off above the harvestable ear may yet produce grain, albeit less than desired. Because such reduction in harvestable plant population occurs so “late in the game,” there is less opportunity for compensation by neighboring plants, and so the estimated yield loss will be approximately equal to the percent of green-snapped plants.

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 Cotton Open: Modest Loss Inside the Prior-Session Range4-21

    DTN Livestock Open: Follow-Through Selling and Short Covering4-21

    DTN Grain Open: Majority of Markets Trade Lower4-21

    Grain TV: China Lowers Soybean Reserve Requirement4-20

    DTN Livestock Close: Future Crash Hard Out of the Gate4-20

    Georgia: UGA Seeks Public Help Tracking Brown Marmorated Stink Bug4-20

    6 Need-To-Know Things About Tree Crops This Week – AgFax Video4-20

    Welch on Wheat: Crop Conditions Unchanged4-20

    Crop Progress: Spring Wheat Planting Jumps, Other Crops Still Slow – DTN4-20

    Welch on Grain: Corn Planting Just Behind Average4-20

    Corn: Website Helps Identify, Respond to Ear Rots4-20

    DTN Cotton Close: Moderate to Heavy Rains in Southeast4-20

    AFB Grain-Soybean Close: Improved Weather Weighs on Corn4-20

    California Cotton: Damaged Roots Prompt Some Mite Treatments – Podcast4-20

    AFB Cotton Close: Slowing Global Market4-20

    AFB Rice Close: Stocks Continue to Weigh on Prices4-20

    DTN Grain Close: Commercial Buying in Soybeans, Wheat4-20

    Wheat: Kansas Researchers Produce Break Through Genetic Study4-20

    GMO Crops: Plant Gene May Stop Contamination of Conventional Crops4-20

    Good on Grain: Will Soybean Consumption Reach the USDA Projection?4-20

    Beef is Far From a Loser at Dinner Time, But It’s Not Exactly the Big Winner – DTN4-20

    DTN Livestock Midday: Long Liquidation and Technical Selling4-20

    DTN Grain Midday: Improvement in Chinese Values4-20

    Texas Wheat: Multi-County Field Tour, Taylor County, May 14-20

    Upland Cotton Genome Unlocked, 1st Step Towards Better Varieties4-20

    Grain Sorghum: Cruiser 5FS Seed Treatment Approved for Sugarcane Aphids4-20

    Flint on Crops: 4 Priorities for a High Level of Crop Success4-20

    Way on Rice: Sugarcane Aphid – Scout Your Sorghum Crop4-18

    Rice Crop: Planting Moves Ahead Despite Rain Delays in Some Areas4-18

    Rice Market: Futures Dipped, But Didn’t Fall Out of Bed4-18

    Tweet of the Week: No Fertilizer – Warning to Landlords4-17

    Cleveland on Cotton: Trading Range Stretching Topside; MidSouth Water Logged4-17

    Rose on Cotton: Spring Rally Coming. Are You Ready?4-17

    Grain TV: Rains Expected to Relieve Wheat Belt Concerns4-17

    Old World Bollworm Arrival Eminent: USDA Invests $1.2M in Detection, Control – DTN4-17

    Rice Planting Stalls Out During A Really Wet Week – AgFax4-17

    How Will China’s Investments in Agriculture Affect U.S. Producers?4-17

    Southern Corn – More Rain Delays And Chance For Smaller Plantings – AgFax4-17

    Conservation Compliance: 5 Steps Needed Before June 1 Deadline4-17

    USDA: Peanut Price Highlights4-17

    Georgia Cotton: No Counter 20G Approval for 20154-17

    Wheat, Feed Grains, and Oilseeds: 2015 Loan Rates Announced – USDA4-17

    Weekly Cotton Market Review – USDA4-17

    Bird Flu Causes Export Bans, Corn and Beef Could Take a Hit – DTN4-17

    Dried Distillers Grain: Short Supplies and “a Disinterested Market” – DTN4-17

    Mississippi: Temperature, Moisture Determine Planting Time4-17

    Moving Grains: Barge Rates Increase with High Water Levels4-16

    USDA Reminds Farmers to Certify Conservation Compliance by June 1 Deadline4-16

    South Carolina Cotton: Counter 20G Not Approved for 20154-16

    U.S. Drought Outlook: Improvements Expected Across the Plains4-16

    Drought Monitor: Mississippi River, Gulf Coast Get Drenched4-16

    Alfalfa Weevils Expected to Be More Active, Scout Fields Regularly – DTN4-16

    U.S. Drought Monitor Quick Look Video – AgFax4-16

    Texas Fertilizer Fire, 2013: What Did We Learn? – DTN4-16

    Wild Hog Wrestling: Don’t Try This at Home – Video4-16

    Good on Grain: Projecting the Corn Balance Sheet, Price Implications4-16

    U.S. Aquaculture Sales: 42% Crustaceans; 57% Alligators From Louisiana4-16

    Texas: 6 Counties Declared Natural Disaster Areas Due to Drought4-16

    Kansas: 2 Counties Declared Natural Disaster Areas; Assistance to Oklahoma4-16

    Grain Risk Management: Alternatives for Soybeans Better than Corn4-16

    Bt Resistance: Straight Talk from Midwest Consultants – Agfax4-15

    Propane Stocks Continue Climb4-15

    Gasoline: Strong Regional Price Movements4-15

    Diesel Prices Move Lower4-15

    5 Tips to Stay Successful in an Ever-Changing Agriculture Market – DTN4-15

    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

    Owen Taylor Debra L. Ferguson Laurie Courtney

          

    Circulation Questions?

    Contact Laurie Courtney +