Agronomy Notebook

Kernel red streak in corn

One common occurrence observed by growers and agronomists as corn begins to mature is a red coloring of the normally yellow pericarp of corn kernels. Kernel Red Streak (KRS), pictured top left, results from the development of red pigment in corn kernels caused by wheat curl mite feeding on the kernel seed coat. According to [...]

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The benefits of collecting good yield data

The sound of locusts in the evening and back-to-school advertisements on TV are a sure sign that August has arrived and summer is quickly coming to an end. Before you know it, corn and soybeans will be changing color and it will be time for harvest. During harvest, most farmers don’t think twice about making [...]

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Warren Co. corn

Time to scout: Here’s what to watch for

Now is an optimum time to scout your corn and soybean fields. This time of year you can begin to gain knowledge on the progress and condition of your crop. Some key items to assess in the corn crop can be, but aren’t limited to: pollination, kernel development, and amount and/or type of foliar disease [...]

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Fhb1 fusarium head blight gene

Although not as prevalent this year, one problem that eastern Corn Belt wheat growers face frequently is Fusarium Head Blight (Scab). This disease can cause significant yield loss in addition to reduced grain quality and high levels of mycotoxins. Growers have effectively managed head scab with timely fungicide applications. One additional too available to growers [...]

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Watch for Palmer amaranth

Now is the time of year when scouting for Palmer amaranth is critical. This weed’s emergence begins in May and will last through the fall. Because of its prolific growth habit and resistance to multiple herbicide modes of action, it is critical to identify and control Palmer amaranth shortly after it emerges. It is important [...]

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grain bin corn

Corn plants appreciate a stress-free summer

Over the next several weeks the upper canopy in Ohio corn fields will look much different, as tassels begin to emerge and extend beyond the top leaves of the plant. This visual change signifies that the corn crop will soon be shifting from vegetative into reproductive growth. The first reproductive growth stage (R1) begins when [...]

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Watching for fertilizer burn

Some plants don’t have much of a root system while others show a beautiful root system with no shoot.  What is going on? In each case I have looked at this year, each farmer was using more than 30 pounds of total nitrogen (N) (28% plus 10-34-0) and/or sulfur in a 2×2 system. These reduced [...]

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Scouting beans

With planting finished, it’s time to take a walk

Finally corn and soybean fields are planted and are up and growing. Now growers need to walk their fields often or hire a professional to identify crop issues that can impact yields. What happens in the next 80 to 90 days will have a major effect on maximizing yield potential. A good tool for scouting [...]

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Documenting the relationship between corn emergence and yield

One very important aspect of corn plant development and yield is emergence. While evenly spaced “picket fence” stands are often discussed, agronomists and university experts stress the more important aspect of emergence-uniform emergence. According to Paul Jasa, University of Nebraska Extension ag engineer, “When a plant develops ahead of its neighbor, it hurts yield dramatically. [...]

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Sidedressing

Deal or no deal: Finding the right nitrogen rate

One of the largest investments in a corn crop is the nitrogen (N) application, and many farmers will be sidedressing their corn soon. Especially with this year’s profit outlook, it is important to carefully consider how much N to apply. Deciding on the correct N rate can be a lot like playing the game “Deal [...]

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