Home » first hollow stem » First hollow stem update 03/02/15

First hollow stem update 03/02/15

About Me

Amanda De Oliveira Silva

Amanda De Oliveira Silva

I have served as an Assistant Professor and Small Grains Extension Specialist at Oklahoma State University since August 2019. I believe that close interaction with producers is vital to understand their production strategies and to establish realistic research goals. My program focuses on developing science-based information to improve the agronomic and economic viability of small grains production in Oklahoma and in the Southern Great Plains.

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First hollow stem is the optimal time to remove cattle from wheat pasture (full explanation). To monitor first hollow stem, we measure hollow stem for the 56 lines in our September-sown wheat forage plots at Stillwater each year. In spite of the recent cold snap many varieties are progressing towards first hollow stem. The small grains extension crew split ten stems from lines tested in our program today and NF 101 and Brawl CL Plus join the list of varieties at or past first hollow stem. Full results are posted in the table below. We will take another set of measurements later this week and report the results on this blog.

The numbers reported from Stillwater are likely behind those being observed in southern Oklahoma and ahead of those observed in northern Oklahoma. You can check progression of first hollow stem around the state by using the First Hollow Stem Advisor on the Oklahoma Mesonet site.


First hollow stem measured in wheat sown 09/16/2014 at Stillwater, OK.
Variety cm of hollow stem 03/02/15
Endurance 0.5
Deliver 0.4
Pete 0.1
OK Rising 0.1
Billings 0.4
Ruby Lee 0.2
Garrison 0.1
Duster 0.4
Gallagher .
Iba 0.1
Centerfield 0.1
Doublestop CL Plus 0.1
NF 101 1.5
Everest .
1863 0.6
KanMark 0.4
Oakley CL 0.6
KS061406 0.7
Sy Llano .
Sy Southwind 0.2
Greer 0.8
Jackpot .
Sy Monument 0.4
06BC722#25 1.3
AP09T7631 0.4
WB-Cedar .
WB-Redhawk .
WB4458 .
WB-Grainfield 1.1
Winterhawk .
T153 .
T154 .
T158 0.5
LCS Mint 0.8
LCS Wizard 0.9
LCS Pistol .
LCH13DH-20-87 0.8
LCH13DH-14-91 .
TAM 112 .
TAM 204 1.4
TAM 113 1.2
TAM 114 1.4
CO11D174 0.9
Byrd 0.7
Brawl CL Plus 1.8
OK09125 0.5
OK1059060-2C14 0.7
OK10126 .
OK11D25056 0.7
OK11231 2.2
OK12621 0.9
OK13625 .
OK0986130-7C13 .
OK08P707W-19C13 1.2
OK10728W 1.0
OK11755W .
Average 0.7


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