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Midwest: This Week’s Agronomy with Scott Speck

Midwest: This Week’s Agronomy with Scott Speck

Midwest: This Week’s Agronomy with Scott Speck

This Week’s Agronomy.

Corn SilkWith a big report coming from the USDA on August 12th, I wanted to take some time to talk about yield, and the impacts, we have seen across the region so far this season. For corn specifically, analysts are talking of upping the USDA’s number of 168 bu/ac to 170bu/ac +, with some skeptic bulls on the hot temperatures during pollination to drop that number. This week’s agronomy goes into pollination and issues we might see throughout the finish of 2016 season.

For corn, hot temperatures seemed to scorch the area of the Midwest over key pollinating times – especially between full pollination when pollen was flying and silks were exposed. Too hot of weather during the season can reduce silk number, even with adequate moisture from the soil but is most likely found in drought prone soil conditions.  Depending on when your growers crop was pollinating, they may have missed out on some of the hot temperatures that could influence poor ear development and fertilization. The best practice to help against this hot weather is staggering maturities so that exposure to those key hot times during July does not occur to the entire crop all at one time. Hot weather that is dry can also reduce the pollen’s effectiveness and ability to shed thus also reducing the chance of successful pollination. As we move now towards filling those kernels for corn, it is key for us to take a look at our nighttime temperatures if we have a sensor on our probe, to double check that we are not continually getting above 70 oF losing our sugars that we have worked so hard in the day to produce through photosynthesis to fill those ears. I have seen many pictures already of tipped back ears and spotty kernel patterns, so be sure to keep an eye out for those problems and bring them to grower’s attention if you see them. Hopefully you won’t!
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