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First hollow stem update 03/13/13

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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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Most wheat varieties are now at first hollow stem. As mentioned in previous posts, the drought has wheat development in Oklahoma a good one to two weeks behind normal. If you still have cattle on wheat pasture it is past time to remove them, as there will be a significant grain yield penalty for further grazing.

CHICKASHA

                 cm of hollow stem

Variety           03/13/13

Jagger             .

Endurance       0.5

Deliver             1.5

Pete                 0.7

Ruby Lee         3.2

Garrison           2.2

Duster              1.9

Gallagher        .

Iba                   2.2

Fuller               .

Everest           .

Jackpot            .

Doans              1.6

Greer               .

CJ                    2.2

Razor               .

Armour             .

WB-Cedar        3.7

WB-Redhawk    .

T153                .

T154                .

T158                0.9

OK08328         0.8

*Average of ten hollow stem measurements in wheat sown 09/20/12 at Chickasha, OK

Stillwater

                 cm of hollow stem

Variety            03/13/13

Jagger                 3.2

Endurance          0.7

Deliver                 1.7

Pete                    0.7

OK Bullet            1.7

OK Rising            2.1

Centerfield          1.4

Ruby Lee             .

Garrison               .

Duster                  1.6

Gallgher              1.8

Iba                       0.4

Billings                2.4

Fuller                   .

Everest                .

Jackpot                4.3

Doans                  .

Greer                   1.2

CJ                        0.4

Razor                   .

Armour                3.2

WB-Cedar            2.7

WB-Redhawk       4.1

WB-Duece CL+    .

WB-Grainfield      0.8

Winterhawk          2.0

WB-4458             .

T153                   .

T154                   .

T158                   0.6

LCS Mint             0.4

LCH08-80            0.5

LCH08 – 109        0.7

T173                   0.7

Byrd                     1.8

Brawl CL+            0.5

TAM 113             1.3

OK09915C          0.9

OK09935C          0.9

OK09634             1.8

OK09125             0.4

OK09528             0.4

OK09729             0.5

OK08328             0.3

*Average of ten hollow stem measurements in wheat sown 09/18/12 at Stillwater, OK

Onset of first hollow stem was affected by severe drought stress


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