I bought a bag of Shumway Seed Co. " Goliath" silo filler corn to try 15-20 years ago. . It is an open pollinated variety of white corn that grew very tall, 16 feet with some at 18 feet. When chopped for silage , after some wind, most of it was 4 feet tall and 12 feet long. Also planted Pioneer X304 tropical which grew 16 feet or more. Another Pioneer tropical improved on grain yield and stalk strength over the X304. I'm thinking it was 3038, a 135 day RM corn. Big diameter stalk grew 15 -16 feet planted late June. yielded 30.5 tons /acre in 36 inch rows at 20,000 pop. Pioneer no longer has any tropical corn. NK has a corn that has some tropical genetic characteristics in it , grows 13-14 feet and has a hard ,flinty type yellow kernel on a white cob. Picture of it below.

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IMG_1904 (Medium).jpg (144KB - 748 downloads)

IMG_1897 (Medium).jpg (134KB - 758 downloads)