Corn traders are also questioning yields. The problem is we planted 97.4 million acres of corn, the most in 77 years, so yields don't have to be "stellar" to produce a record large crop. Do you realize we have increased our planted corn acres by 24% here in the US since 2006? Anyway you slice it thats a big number and one that unfortunately is going to keep some type of lid on prices. For those who are trying to best judge yield losses or damage to the crop, I have included some information from Purdue in regards to yield loss estimates when corn dies due to premature death, which some producers are now looking at because of the recent "flash drought."
- Premature whole plant death at soft dough = a 55% yield reduction compared to a normal finish. 200 bushel per acre potential corn becomes 90 bushel an acre in this situation. When corn dies at this stage the grain usually has very low test weight and is of very low quality. The kernels are also so small that increased harvest loss is common (especially when the field has "greener" pockets mixed in with really dead areas).
- Premature whole plant death at the start of full dent = a 41% yield reduction compared to a normal finish. 200 bushel an acre potential becomes 118 bushel an acre in this situation. Corn dying at this growth stage is very common in Illinois right now! This grain looks more like corn when it dies at the start of dent but it often has test weight and quality issues.
- Premature whole plant death at ½ milk/starch line = a 12% yield reduction compared to a normal finish. 200 bushel an acre potential becomes 176 bushel an acre in this situation. When corn dies at a ½ milk/starch the grain usually maintains decent test weight and quality. (Source: Purdue University)
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