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First hollow stem update 03/09/15

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 KanMark, Sy Southwind and Greer join the list of varieties at or past first hollow stem. Full results are posted in the table below. Varieties with no value for first hollow stem reached first hollow stem on a previous measurement date.

We will take another set of measurements later this week and report the results on this blog. Given the warm forecast for the coming week, I predict that all varieties will be well past first hollow stem by Friday. 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. Varieties with ‘-‘ reached first hollow stem on a previous measurement date
Variety cm of hollow stem 03/09/15
Endurance 0.2
Deliver 0.2
Pete 0.3
OK Rising 0.7
Billings 1.0
Ruby Lee 0.6
Garrison 0.9
Duster 0.9
Gallagher
Iba 0.8
Centerfield 0.5
Doublestop CL Plus 0.6
NF 101
Everest
1863
KanMark 1.5
Oakley CL 0.9
KS061406 1.2
Sy Llano
Sy Southwind 2.6
Greer 2.1
Jackpot
Sy Monument 0.7
06BC722#25
AP09T7631 1.5
WB-Cedar
WB-Redhawk
WB4458
WB-Grainfield 0.8
Winterhawk
T153
T154
T158 0.8
LCS Mint
LCS Wizard 0.6
LCS Pistol
LCH13DH-20-87 1.0
LCH13DH-14-91
TAM 112
TAM 204
TAM 113
TAM 114
CO11D174 2.2
Byrd
Brawl CL Plus
OK09125 1.3
OK1059060-2C14 0.9
OK10126
OK11D25056 1.1
OK11231
OK12621 1.1
OK13625
OK0986130-7C13
OK08P707W-19C13 1.4
OK10728W
OK11755W

 

First hollow stem update 03/05/15

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 and1863, LCS Mint, TAM 204, TAM 113, TAM 114, and Byrd join the list of varieties at or past first hollow stem. Full results are posted in the table below. Varieties with no value for first hollow stem reached first hollow stem on a previous measurement date.

We will take another set of measurements later this week and report the results on this blog. Given the warm forecast for the coming week, I predict that all varieties will be well past first hollow stem by next Friday. 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. Varieties with a “-” reached first hollow stem on a previous measurement date
Variety cm of hollow stem 03/05/15
Endurance 0.2
Deliver 0.2
Pete 0.1
OK Rising 0.2
Billings 0.7
Ruby Lee 0.6
Garrison 0.5
Duster 0.5
Gallagher
Iba 0.5
Centerfield 0.2
Doublestop CL Plus 0.3
NF 101
Everest
1863 1.6
KanMark 1.1
Oakley CL 0.6
KS061406 1.0
Sy Llano
Sy Southwind 0.9
Greer 1.1
Jackpot
Sy Monument 0.1
06BC722#25 2.8
AP09T7631 1.1
WB-Cedar
WB-Redhawk
WB4458
WB-Grainfield 0.8
Winterhawk
T153
T154
T158 1.3
LCS Mint 1.5
LCS Wizard 0.7
LCS Pistol
LCH13DH-20-87 1.1
LCH13DH-14-91
TAM 112
TAM 204 1.6
TAM 113 1.6
TAM 114 1.9
CO11D174 1.1
Byrd 1.7
Brawl CL Plus
OK09125 0.8
OK1059060-2C14 1.4
OK10126
OK11D25056 0.9
OK11231
OK12621 0.8
OK13625
OK0986130-7C13
OK08P707W-19C13 1.3
OK10728W 1.5
OK11755W
Average 1.0

 

First hollow stem update 03/02/15

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

 

First hollow stem update 02/26/15

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 Gallagher, Everest, Jackpot, Winterhawk, T153, T154, LCS Pistol, and TAM 112 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 the first of next 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. Varieties in red are at or past first hollow stem.
Variety cm of hollow stem 02/26/15
Endurance 0.0
Deliver 0.6
Pete 0.0
OK Rising 0.1
Billings 0.5
Ruby Lee 0.4
Garrison 0.1
Duster 0.1
Gallagher 2.0
Iba 0.1
Centerfield 0.2
Doublestop CL Plus 0.0
NF 101 1.0
Everest 1.6
1863 0.7
KanMark 1.1
Oakley CL 1.0
KS061406 0.8
Sy Llano
Sy Southwind 0.6
Greer 0.8
Jackpot 1.9
Sy Monument 0.0
06BC722#25 0.8
AP09T7631 0.1
WB-Cedar
WB-Redhawk
WB4458 1.7
WB-Grainfield 1.0
Winterhawk 1.9
T153 1.5
T154 2.3
T158 0.1
LCS Mint 1.4
LCS Wizard 0.7
LCS Pistol 1.7
LCH13DH-20-87 0.8
LCH13DH-14-91
TAM 112 1.9
TAM 204 1.3
TAM 113 1.4
TAM 114 1.2
CO11D174 1.1
Byrd 0.7
Brawl CL Plus 0.9
OK09125 0.9
OK1059060-2C14 0.9
OK10126 2.3
OK11D25056 1.5
OK11231 1.4
OK12621 0.6
OK13625
OK0986130-7C13
OK08P707W-19C13 1.0
OK10728W 1.0
OK11755W 2.2
Average 1.0

 

 

First hollow stem update 02/19/15

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 the warm temperatures have caused first hollow stem to advance ahead of schedule this year. The small grains extension crew split ten stems from each of the 56 lines tested in our program yesterday and Sy Llano, WB-Cedar, WB-Redhawk, and a few experimental lines were all at first hollow stem. Early varieties such as Gallagher, Greer, Everest, WB4458, TAM 114, and Brawl CL Plus are not far behind. A full listing of first hollow stem measurements are included in the table at the end of this blog. We will take another set of measurements the first of next 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. Jim Johnson with the Noble Foundation reported seeing quite a bit of first hollow stem in early varieties last week.

Probability of first hollow stem for early maturing wheat varieties as estimated on 02/19/15. Red areas indicate there is at least 50% likelihood that early-maturing wheat varieties have reached first hollow stem in the shaded area.

Probability of first hollow stem for early maturing wheat varieties as estimated on 02/19/15. Red areas indicate there is at least 50% likelihood that early-maturing wheat varieties have reached first hollow stem in the shaded area.

One week projection of first hollow stem for early-maturing wheat cultivars 02/19/15

One week projection of first hollow stem for early-maturing wheat cultivars 02/19/15

The First Hollow Stem Advisor on the Oklahoma Mesonet indicates that  early varieties in southern Oklahoma are likely past first hollow stem and that early varieties in central Oklahoma will reach this point within a week.

Keep in mind the one week projection uses historical weather conditions which are slightly above our current forecast. Cooler than normal conditions will not last long and wheat can grow anytime average daily temperature is above 32F. So, my advice is to move cattle off of wheat pasture in southern Oklahoma yesterday, start moving them off of wheat pasture in central Oklahoma today, and move cattle off wheat pasture in northern Oklahoma next week.

 

First hollow stem measured in wheat sown 09/16/2014 at Stillwater, OK. Varieties at or past first hollow stem (>1.5 cm of hollow stem) are shaded in red.
Variety cm of hollow stem 02/18/14
Endurance 0.1
Deliver 0.0
Pete 0.0
OK Rising 0.0
Billings 0.7
Ruby Lee 0.0
Garrison 0.1
Duster 0.1
Gallagher 1.2
Iba 0.2
Centerfield 0.0
Doublestop CL Plus 0.0
NF 101 0.9
Everest 1.3
1863 0.6
KanMark 0.5
Oakley CL 1.0
KS061406 0.4
Sy Llano 2.7
Sy Southwind 0.8
Greer 1.4
Jackpot 0.8
Sy Monument 0.0
06BC722#25 0.5
AP09T7631 0.7
WB-Cedar 1.5
WB-Redhawk 1.5
WB4458 1.3
WB-Grainfield 0.1
Winterhawk 0.8
T153 1.1
T154 0.6
T158 0.1
LCS Mint 0.7
LCS Wizard 0.4
LCS Pistol 0.8
LCH13DH-20-87 0.4
LCH13DH-14-91 1.8
TAM 112 0.9
TAM 204 1.0
TAM 113 0.7
TAM 114 1.3
CO11D174 0.5
Byrd 0.5
Brawl CL Plus 1.2
OK09125 0.9
OK1059060-2C14 0.4
OK10126 0.5
OK11D25056 0.2
OK11231 0.6
OK12621 0.7
OK13625 1.6
OK0986130-7C13 2.2
OK08P707W-19C13 0.9
OK10728W 1.0
OK11755W 1.2
Average 0.7

 

 

First hollow stem update 03/05/2014

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 these plots in a table at the end of this blog. No varieties are currently at first hollow stem at Stillwater, but I anticipate the small amount of moisture gained from recent snow and warming temperatures will spur onset of first hollow stem over the next week or so. We will take another set of measurements on March 10 and report the results on this blog.

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. Dillon Butchee in the Altus area reported finding first hollow stem in Jagger last week. The First Hollow Stem Advisor on the Oklahoma Mesonet indicates that  early varieties in southern Oklahoma are likely past first hollow stem and that early varieties in central Oklahoma will reach this point within a week. Keep in mind the one week projection uses historical weather conditions which exceed our current forecast. Cooler than normal conditions will not last forever, though, and my advice is to move cattle off of wheat pasture in southern Oklahoma yesterday, start moving them off of wheat pasture in central Oklahoma today, and move cattle off wheat pasture in northern Oklahoma next week.

Probability of first hollow stem for early varieties 03/05/2014

Probability of first hollow stem for early varieties 03/05/2014

One week projected probability of first hollow stem for early varieties 03/05/2014

One week projected probability of first hollow stem for early varieties 03/05/2014

Variety cm of hollow stem 03/05/2014
Endurance 0.00
Deliver 0.00
Pete 0.24
OK Bullet 0.00
OK Rising 0.00
Billings 0.62
Ruby Lee 0.04
Garrison 0.22
Duster 0.00
Gallagher 0.39
Iba 0.00
Everest 0.29
Jackpot 0.12
Doans 0.00
Greer 0.31
CJ 0.02
SY Southwind 0.11
Exp F14 0.03
Armour 0.22
WB-Cedar 0.51
WB-Redhawk 0.66
WB-Grainfield 0.10
Winterhawk 0.09
WB4458 0.00
T153 0.00
T154 0.23
T158 0.02
LCS Mint 0.02
LCS Wizard 0.02
LCH11-109 0.11
LCH11-1117 0.10
LCH11-1130 0.16
TAM 112 0.14
TAM 113 0.77
Byrd 0.12
Brawl CL Plus 0.00
Centerfield 0.00
Doublestop CL Plus 0.03
OK09125 0.00
OK09520 0.03
OK10126 0.00
OK08707W-19C13 0.02
OK10805W 0.02
OK10728W 0.02
OK11754WF 0.77
Average 0.15