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Nitrogen Efficiency, Application Timing Increase Corn Yields

Modern hybrids absorb more than half of their final N content after flowering. In fact, they absorb 27% more total N from the soil after flowering than hybrids grown between 1950 and 1990, says a newly released Purdue study. Today’s hybrids absorb more grain-N during grain fill, as opposed to N being remobilized from plant leaves and stems. The higher amount and duration of N uptake contributed to better grain yields, even as actual grain N concentrations decline; hybrids are much more efficient. But as corn plants increase N use, they increase their uptake of other nutrients.

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  • May 22, 2013
    Article

    Evaluate Early-Season Corn Stands

    Corn can face many different stresses capable of reducing stands, such as cold or wet soils, insect feeding and unfavorable weather conditions. In severe cases of stand reduction, growers will need to determine if replanting will be more profitable than keeping the current crop....More
  • May 21, 2013
    blog

    Corn Planting Progress Mixed

    If you ask someone, “How much corn is planted, or how much spring fieldwork has occurred in your area?” the response is likely to be quite different. A major snowfall event in early May, followed by frequent rainfall events throughout most of May, in the eastern half of southern Minnesota, as well as areas of northern Iowa, has caused significant delays in corn planting....More
  • May 21, 2013
    Article

    Troubleshoot Corn Emergence Problems

    Troubleshooting emergence problems early is critical in identifying solutions and developing successful replant plans, if needed. Here's a list of a few common things to look for if you encounter an emergence problem in corn this spring....More
  • May 15, 2013
    Article

    Nitrogen Testing Tool Increases Corn Profits

    You can now assess your corn’s nitrogen (N) needs every 24 hours. The Adapt-N online computer model, from Cornell University, simulates the complex processes in a corn field: local precipitation and temperatures, soil type, soil organic matter and slope, previous crops, inputs, tillage, planting date, population, hybrids, rotation, type and date of starter and yield potential. Using high-resolution weather information (3x3-mile grids), the web model tailors site-specific N recommendations to your farm in almost real time....More
  • May 14, 2013
    Article

    May 13 Crop Progress: Corn Nearly 1/3 Planted, Soybean Planting Lagging

    Farmers across corn-producing states made decent progress in the last week, going from 12% planted on May 5 to 28% of the overall corn crop planted by May 12. This is still well behind the five-year average of 65% planted....More
  • May 14, 2013
    Article

    6 Tips for Postemergence Application of Pre-Emergence Corn Herbicides

    One of the problems with a wet start to the season when planting gets compressed into short periods is the lack of time to apply preemergence herbicides and 28% before corn emerges. Most pre-emergence corn herbicides can be applied to emerged corn, and some of them have enough foliar activity to control small, emerged weeds without the need to add postemergence (post) herbicides....More
  • May 10, 2013
    blog

    May 2013 WASDE Breakdown and Perspective

    Breakdown of the USDA numbers......More
  • May 9, 2013
    blog

    Why Corn Could Turn Bullish

    I'm starting to sharpen my bull horns in corn!...More
  • May 7, 2013
    Article
    Corn and Soybean Digest

    May 6, 2013 Crop Progress Report: Corn 12% Planted, Soybean Planting Started

    Corn planting progressed a bit last week, moving up 7 points from the week before to 12% planted overall. The five-year average is 47% planted, and last year the overall corn planting progress was 69% at this time. North Carolina and Texas have the most corn in the ground at 89% and 70% completed so far, and slightly behind the five-year averages for each state....More
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