72% gd/ex corn
1 response | 0 likes
Started by wglassfo - Aug. 6, 2018, 12:15 p.m.

A question that may have to wait until harvest

Is the 72% gd/ex  rating derived by drive by observation

One would think so, as early observation would report on vegetative growth and anything later would be useless to report on grain fill, if anybody even ventures into the fields, this early

I am referring to possible kernel heat fill and tip back problems

MM advised us of rapid kernel fill and the ramifications It now seems that some growers who venture out into their fields are astonished at how quickly, excellent corn is maturing

Many report the earliest expected harvest in yrs

I have read of farmers complaining about cobs that don't seem to be getting as "fat" as usual

Mind you, many have shown corn that has excellent potential at heavy dent with one grower reporting excellent yield at 29% moisture

I am wondering with the various nicks and scatches, if we have a 174 average production

I know we always have trouble spots, but is there  another hidden yield robber in the fields

That being smaller kernels due to rapid heat fill

Many growers report that going deeper into the field is not what you see from the road, mainly not as good as seen from the out side

A sub 174 would change the expected corn carry over and I expect,  reports from other grain growing countries, could affect world grain supplies

Friday state by state report might be interesting, if the report is to be believed

Regardless I think the trade will follow the numbers, what ever they may be

Last yr was an excellent yr for kernel fill

Maybe not so much for this yr.

By metmike - Aug. 6, 2018, 12:40 p.m.
Like Reply

Thanks Wayne!

I've posted my heat fill explanation tons of times here.


It has been a very warm growing season..............with the exception of the last 2 weeks. The last 14 days, when most of the crop has been filling, has featured below normal temperatures. This is favorable weather for filling, even though the advanced stage of the crop at this time of year, is a bit less than ideal. 

Regarding crop ratings. They are based on how the crop looks on the outside. Kernel filling, being on the inside can tell a much different story. 

Temps below are for the last 2 weeks:


You are correct that last August was cool and good for filling. Last Augusts temps are below: