First hollow stem update 02/29/2016

First hollow stem is the optimal time to remove cattle from wheat pasture (full explanation). We measure first hollow in our September-sown wheat forage plots at Stillwater each year, and normally have approximately 50% of varieties at or past first hollow stem by March 1st. I have posted first hollow stem measurements from samples taken from these plots on 02/29/16 in a table at the end of this blog. Most wheat varieties are now at or well past first hollow stem.

Keep in mind that the numbers reported from Stillwater are likely behind those being observed in southern Oklahoma and ahead of those observed in northern Oklahoma. The First Hollow Stem Advisor can provide an estimate of first hollow stem progress in your neck of the woods.

First hollow stem measured in wheat sown 09/15/2015 at Stillwater, OK. Varieties with ‘-‘ reached first hollow stem on a previous measurement date
Variety cm of hollow stem 02/29/2016
Endurance 1.0
OK Rising 1.5
Ruby Lee 2.0
Duster 2.0
Doublestop CL Plus 1.4
NF 101
SY Monument 1.0
SY Flint
SY Llano
SY Drifter
SY Wolf 2.7
SY Razor
SY Grit
KanMark 1.5
Oakley CL 1.3
Larry 0.9
Tatanka 1.1
Joe 0.8
LCS Pistol 1.1
LCS Wizard 1.3
LCS Mint 1.4
LCS Chrome 1.2
T158 1.1
Long Branch 1.2
TAM 112 1.6
TAM 204 1.7
TAM 114 1.6
AG Robust
Byrd 1.7
Brawl CL Plus 1.1
Avery 1.1
OK1059060-3 1.4
OK10126 0.8
OK11D25056 1.1
OK12621 1.1
Stardust 1.0
OK12716R/W 1.1
OK11231 1.0
OK09915C-1 0.8
OK12912C 1.1
OK12DP22002-042 1.6

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