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

    Grain TV: Shortcovering Rally in Soybeans7-24

    DTN Livestock Close: Hog Contracts Clobbered Again7-24

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

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

    AFB Grain-Soybean Close: Good Exports Boost Soybeans, Unable to Lift Corn7-24

    AFB Cotton Close: Breaks Support with Sharp Losses7-24

    AFB Rice Close: Another Low Move7-24

    DTN Cotton Close: Plunges to new Contract Low7-24

    DTN Grain Close: Exports Help Boost Soybeans7-24

    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

    DTN Livestock Midday: Pressure Redevelops in Hog Complex7-24

    2014 Farm Bill Decisions: Base Acre Reallocation Option7-24

    DTN Grain Midday: Corn, Wheat Drift Lower7-24

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

    DTN Cotton Open: Trades with Modest Losses7-24

    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

    DTN Livestock Open: Meat Futures Headed in Opposite Directions7-24

    Keith Good: House Ag Committee Chair Prods USDA on Crop Insurance7-24

    Doane Cotton Close: Prices Mixed in Light Trade7-23

    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

    AgFax Grain Review: Chinese Soy Imports to Climb; Best Crop Conditions in Decades7-23

    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

    DTN Grain Midday: Soybean Futures 8 to 13 Higher7-23

    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

    AgFax Cotton Review: Worst Price Slump in 55 Years; Weather Delays Development7-22

    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

    Oklahoma Farmer Modifies Business Choices Due to Wet Spring – DTN7-21

    Cover Crops a Good Replacement in Weather Damaged Fields – DTN7-21

    AgFax Rice Review: UN Prescribes Arsenic Levels; Armyworms Abound in MS7-21

    Arkansas: Emerald Ash Borer Turns Up to Threaten Ash Trees7-21

    Good on Grain: Corn Price Premiums Continue to Fade7-21

    It’s Been 18 Years – What’s Happened in Herbicide Tolerant and Insect Resistant Crops?7-21

    USDA Creates Soybeans Out of Thin Air, Sorta — DTN7-21

    Mississippi Wheat: MSU Releases Variety Trial Data7-21

    Flint on Crops: Bacterial Blight Makes a Comeback in Cotton7-21

    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