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C IL | I have the exact same questions and comments, down to ambient temp vs heat index.
I remember reading, in an old corn production textbook on my dad’s shelf from the 70’s, something to the effect that “the optimal high temp for corn growth is 86 degrees for nonirrigated land”. It didn’t explain any further. Detriments, what the optimal temp was for irrigated land, etc.
I have been reading up on nighttime corn temps affecting corn yields and there’s not a lot of great extension answers out there. The few articles mostly point out that the mechanisms by which yields are reduced aren’t greatly understood and boil down to nighttime respiration burning sugar (the common layman answer) and shortened grain fill periods with less days to photosynthize and make sugar (the researcher’s preferred theoretical answer, not researched in great detail). | |
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SoDak’s comments on Grain fill temps - model observations
