Corn Yields
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Started by metmike - Sept. 12, 2021, 12:01 p.m.


Corn is a crop that simply does NOT like abnormal heat in the matter what rainfall is like. That theory will be put the test again this the chart below shows. Note that a sub-normal national corn yield this year would be 177.2 bpa or lower.


Re: Corn Yields
By mcfarm - Sept. 12, 2021, 12:10 p.m.
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this crop just did not finish well, In many places there was an extended drought, high nite time temps and hot windy days. Test wt reports so far have been way below normal and ylds everywhere from 40 to 270 depending on how lucky you got

By metmike - Sept. 12, 2021, 12:13 p.m.
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Thanks mcfarm,

I figured you would like that post!

Previous thread on corn yields:

                shelling corn in NW Iowa            

                            4 responses |          

                Started by mcfarm - Sept. 6, 2021, 9:01 p.m.    

By bowyer - Sept. 12, 2021, 1:41 p.m.
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We will probably get started this week. Finishing up the hay now. Corn stalks have really started drying up and turning brown this last week. Last year didn't start till Sept 30

By Jim_M - Sept. 13, 2021, 10:40 a.m.
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It will be interesting to see the final yields.  If we have learned anything in the last couple years is that there are a lot of myths and perceptions about grain growth in different types of weather, that have been blown out the window.  

By metmike - Sept. 13, 2021, 10:57 a.m.
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The timing of the heat means everything!

Heat in June into early July, BEFORE pollination with decent rains is good.

 After that, it hurts, especially AFTER pollination because of heat fill.

                Heat fill for corn August 22, 2021            

                            13 responses |               

                Started by metmike - Aug. 22, 2021, 8:31 p.m.    

I'll have to look at actual temps to see how much heat fill we had this year.

By MarkB - Sept. 13, 2021, 11:12 a.m.
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Makes a good argument to get bullish.

By metmike - Sept. 13, 2021, 12:40 p.m.
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Let's look at the actual temperatures:

The last 3 months have been much warmer than average in the far northwestern belt, especially the N/C Plains. Around average most places.

By metmike - Sept. 13, 2021, 12:44 p.m.
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The last 30 days featured warmer than average temps. This mean less than optimal finishing temps with rapid maturity and less filling time.

By metmike - Sept. 13, 2021, 12:47 p.m.
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The previous 30 days featured favorable temperatures for much of the belt. This would have included pollination and the first couple/few weeks of filling. 

The far northwest/U.Midwest, especially the N.Plains had some major heat.

By metmike - Sept. 13, 2021, 12:50 p.m.
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The first month of Summer was a tale of 2 weather patterns. Record heat in the Northwest spilling into the Plains. Close to average to slightly below average elsewhere.