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Corn Yield Implications of Late Planting

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University of Illinois Extension Agronomist Emerson Nafziger discusses the impact of late corn planting and how farmers should set about nitrogen applications this spring. He was interviewed May 1, 2019 by Todd Gleason.The following summary is taken from a May 1, 2019 University of Illinois farmdocDaily article written by agricultural economists Scott Irwin and Todd Hubbs.“The impact of late planting on projections of the U.S. average corn yield is an important question right now due to the very wet conditions so far this spring through much of the Corn Belt. We estimate that the relationship of late planting with corn yield trend deviations is highly non-linear, with a largely flat segment up to 10 percent above average late planting and then a steeply sloped segment for late planting that is 10 percent or more above average. This nicely matches the curvature of planting date effects on corn yield estimated in agronomic field trials (e.g., farmdoc daily, May 20, 2015; Nafziger, 2017)…

Crop Insurance Loss Ratios in 2018

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Gary Schnitkey from the University of Illinois discusses crop insurance loss ratios for 2018, the current outlook for payments in 2019, and the strategic economic models he’ll be developing for soybeans.

by Gary Schnitkey, University of Illinois
link to farmdocDaily article

Most 2018 payments on Federal crop insurance products have now been entered into the Risk Management Agency’s (RMA’s) record system and losses for 2018 can be stated accurately. Similar to 2016 and 2017, low losses again occurred in 2018. Losses were particularly low in Illinois and, more generally, the eastern Corn Belt.

Background on Loss Ratios

This article presents loss ratios, which equal payments on crop insurance policies divided by total premium paid on crop insurance policies. A loss ratio of 1.0 means that crop insurance payments are equal to total premium. Ratios above 1.0 indicate that payments exceed premium, which occurs with some regularity. On the other hand, loss ratios below 1.0 indicate that payme…

It Still Takes Two Weeks to Plant the American Corn Crop

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Most people take for granted that the farmers can plant their crops way faster today than ever before. While it is true today’s equipment can plant a single acre of corn much faster, it still takes about the same amount of time to plant the whole crop.



It’s an illusion and pretty simple math says University of Illinois Agricultural Economist Scott Irwin, "This is a situation where your eyes can deceive you. So, you drive out in the countryside and you have a friend that is a farmer. They have a big planter and can plant their individual farm, in these particular cases, clearly much faster than they used to (be able to plant them). I don’t disagree with that individual anecdotal observation. The problem is that this doesn’t necessarily add up to the whole."



Sure, the equipment can get over a single acre way faster but each piece of equipment is going over way more acres than used to be the case. Consequently, it takes about the same time to plant the whole U.S. corn crop toda…

Good Yields! Yes but a Warning | an interview with Gary Schnitkey

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by Gary Schnitkey, University of Illinois
read farmdocDaily article

On a national basis, corn and soybean yields were near record-breaking levels in 2018, with exceptional yields in central Illinois and the eastern United States contributing heavily to those near-record U.S. yields. Other areas had below-trend yields. The county yields for corn and soybeans presented in this article illustrate these facts. Much higher U.S. yields are possible if all areas have exceptional yields. However, all areas including Illinois should not expect above-trend yields in every year.

Corn Yields

The 2018 corn yield for the United States was 176.4 bushels per acre, just .2 bushels below the record yield of 176.6 bushels per acre set in 2017 (all yields in this article are from QuickStats, a website maintained by the National Agricultural Statistical Service). From a national standpoint, corn yields were excellent in 2018.

Contributing to these high yields were counties having average yields above 220 …

Apr 10 | CONAB Updates Corn S&D Table

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@Conab_Oficial reports Brazil's second-crop corn acreage is expected to be up 6.1% from last year. An early soybean harvest and good weather are the contributing factors. The 2nd crop corn harvest is expected to be 26.4% larger than last season's climate hampered crop.



Brazil's 2018/19 ending stocks are expected to rise to 15.3mt or approximately a 2-month supply with total yearly demand at 93.5mt. @Conab_Oficial notes new crop corn supply may yet grow as production conditions are "very positive". Exports are set at 31mt.



On price - @Conab_Oficial is concerned domestic usage will not increase because the 62.5mt already includes livestock feed usage that has levelled off and it is not known if domestic corn ethanol increases will materialize as new plants have yet to come online.

...a good part of the 1st crop corn writes @Conab_Oficial has not been marketed. When taken with a big second crop corn harvest it cautions a low price scenario.

Brazil's counterpart …

USDA Reports Provide Surprises for Corn

Friday’s USDA reports surprised the corn market. Todd Gleason has more on how more corn acreage than expected this year coupled with more corn leftover from last year than expected will influence prices.

by Todd Hubbs, University of Illinois
read farmdocdaily article
watch post-USDA report webinar with Todd Hubbs and Scott Irwin

The USDA’s quarterly Grain Stocks report and annual Prospective Planting report delivered surprises to the corn market. A greater than expected corn stocks number combined with higher than expected planted acreage of corn gave very bearish news to corn prices. Soybean stocks and acreage came in neutral to slightly positive for soybean prices.

March 1 corn stocks came in at 8.605 billion bushels compared to an average trade guess of 8.335 billion bushels. The stocks estimate suggested feed and residual use of corn during the first half of the 2018–19 marketing year came in eight percent lower than last marketing year. Lower feed and residual use materialized desp…

Managing Nitrogen for Corn in 2019

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by Emerson Nafziger, University of Illinois

The fall of 2018 and so far in 2019, there have been limited opportunities to apply nitrogen fertilizer. Average rainfall through the first 25 days of March ranged from a little less than normal in the northern half of Illinois to an inch or more above normal in south-central Illinois. But temperatures have averaged 3 to 4 degrees below normal, which slowed drying. There were several days in the first week of March when it was frozen on the surface and a considerable amount of P and K went on. This was followed by an inch or more of rain (which had been forecast) in many areas, and it’s likely that some of the nutrients—those in MAP/DAP and potash are soluble—moved from higher to lower parts of fields, or off of fields altogether. While it’s good to get P and K applied before spring work starts, we really should consider holding off the next time soils are frozen and substantial rainfall is forecast before a thaw.

N rate

Results from the on-…

Mar 29 | USDA Stocks & Acreage

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- Dale Durchholz, AgriVisor LLC
- Greg Ginder, FCStone
- Mike Zuzolo, GlobalAnalytics.net
- Lance Honig, USDA NASS












Pre-Season Tar Spot Checklist for Corn

Corn farmers in northern Illinois and across the corn belt have been dealing with a new disease. Todd Gleason has more on Tar Spot and what producers can do to mitigate its impact.

Tar spot is a relatively new disease of corn in the Midwest. It has been showing up on field corn in Iowa, Illinois, Michigan, Wisconsin, Indiana, Ohio, and Florida says University of Illinois Extension Plant Pathologist Nathan Kleczewski, "That's where it is found right now. But in terms of severity, where we have seen it the most and the pressure is the highest, if you would take the lower portion of Lake Michigan and draw a section around there, that is where we've had the greatest severity right now. That is where we've had the most pressure."

Kleczewski says this is because tar spot likes nighttime lows in the 70's and a lot of humidity. Here's a pre-season checklist for farmers in these areas concerned about the disease, "We do know that hybrids have different toler…