The Bulletin Archives - Page 42 of 70

Corn Replanting and Herbicide Considerations

May 9, 2017
Aaron Hager

Following the recent and excessive precipitation, some corn replanting likely will occur when soil conditions are conducive. We hope that replanting occurs only in small areas of a given field, but in some situations entire fields may have to be replanted. While there are many agronomic considerations associated with replanting, some weed control/herbicide issues also should be considered.
Herbicide-resistance traits in the replanted hybrids should be taken into account. For example, if you initially planted a glyphosate-resistant corn hybrid and have areas that need to be replanted,…

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A Little Drier, But Not Yet Warm

May 8, 2017
Emerson Nafziger

Very little corn or soybean planting took place in Illinois over the past week, and while planting progress is not far behind average for the end of the first week of May, crop development is starting to lag as temperatures remain cool. Crop emergence has been slow, with only less than half of the corn crop that was planted by the end of April emerged by May 7.
One of the most visible consequences of the cool weather has been the poor corn crop color of recent days.…

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University of Illinois Weed Science Field Research Tour

May 5, 2017
Aaron Hager

The weed science program at the University of Illinois invites all weed management practitioners to our annual weed science field tour, which will be held on Wednesday, June 28 at the Crop Sciences Research and Education Center (a.k.a. South Farm), located south of campus on Wright Street extended. Registration will begin at 8:00 a.m. and refreshments (coffee, juice, and doughnuts) will be available. Preregistration is not required, but please let us know in advance if you will be bringing a large group of participants so we can plan accordingly for meals.…

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Impressive Moth Flights across Midwest

April 28, 2017
Kelly Estes

Impressive moth flights have not only kept the Illinois insect monitoring network cooperators busy, but neighboring states are reporting lots of black cutworm and true armyworm moth activity as well. The current forecast and planting progress has raised questions about the potential for these pests in the coming weeks.
With the assistance of University of Illinois Extension educators, producers and industry volunteers, nearly 60 trap sites have been established across Illinois. Captures of both black cutworm and true armyworm have been common across the state.…

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Dealing with cool and wet conditions

April 27, 2017
Emerson Nafziger

April has been a little warmer and drier than average so far this year, which has allowed a good start to corn planting and some progress in soybean planting. This is expected to change, with above-normal rainfall and below-normal temperatures over the next 10 days or so, through the first week of May.
It rained on Easter Sunday most places in Illinois, which according to the old saying means that it should rain on each of the seven Sundays after Easter.…

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Dry Soils and Residual Herbicides

April 26, 2017
Aaron Hager

Decades ago it was very common for the majority of corn and soybean acres in Illinois to be treated with one or more soil-residual herbicides before crop/weed emergence. During the 1980s, commercialization of broad-spectrum, postemergence herbicides began the shift away from widespread use of soil-residual herbicides; products such as Basagran, Classic, Accent and Pursuit contributed to the early adoption of postemergence weed control programs. The era of total postemergence weed control reached its zenith following the widespread adoption of glyphosate-resistant crops and the concomitant use of glyphosate. …

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Spring Nitrogen Management

April 13, 2017
Emerson Nafziger

Most corn producers have made plans on how to supply the 2017 Illinois corn crop with nitrogen. But with the stakes high, unusually early N application this past winter and early spring, the delay in fieldwork due to rainfall over the past week, and ongoing pressure to “get nitrogen right,” some might be rethinking plans as the season gets underway.
I presented a webinar on the topic of spring N management on March 30, 2017; the link to the recording can be found at https://ifca.com/.…

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Announcing a nitrogen management webinar

March 23, 2017
Emerson Nafziger

On Thursday, March 30 beginning at 9:00 AM, I will present a webinar summarizing our recent N management research, which is funded by the Illinois Nutrient Research and Education Council (NREC) using fertilizer checkoff funds.
Topics will include the status of N applied last fall, a summary of results from our N form and timing studies over the past three years, and a look at how well soil N tracked through the spring can tell us if we need more N.…

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Planting date for corn and soybeans in Illinois

March 23, 2017
Emerson Nafziger

Relatively dry weather in recent weeks throughout much of Illinois and an early start to fieldwork might provide the unusual opportunity this year of letting us choose corn and soybean planting dates instead of having to wait until it’s dry enough.
There are reports that some corn and possibly some soybeans were planted as early as February this year. The main motivation for such plantings is often the excitement that comes (or doesn’t) from having the crop survive “against all odds.” While that may be satisfying,…

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Calling Illinois Soybean Growers-Again

March 15, 2017
Emerson Nafziger

In January I posted about the large project we are part of, funded by the North Central Soybean Research using soybean checkoff funds, to gather information on some 500 soybean fields in Illinois for each crop year from 2014 through 2017. The response has not been as enthusiastic as I had hoped, so I’m again calling for help on this. With 10 million acres of soybean in Illinois, 500 fields is less than a quarter of a percent of fields.…

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