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About 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.

Harvest Makes Progress in Southern Oklahoma, Wheat Ready in Parts of Central Oklahoma, but Delayed by Rain

By: The Oklahoma Wheat Commission

Oklahoma wheat harvest made good strides the last few days in parts of Southwest, Oklahoma. Producers as far North in the Okarche and Reeding area were also able to start earlier in the week before rains delayed progress on Wednesday morning. Samples and small cuttings were taken in at Greenfield. Cooler temperatures made for a late start in a lot of areas yesterday. High humidity, cloudy weather, with fog and mist today have hindered anything being cut this morning. Predicted rains late this afternoon/evening and over the weekend will likely stall progress over the Memorial Day weekend. Wheat being taken in at all locations show favorable yields and quality.

Devol/Grandfield/Chattanooga- This area has taken in a lot of wheat over the past 5 to 7 days, with approximately 15 percent of the crop harvested.   Yields are ranging from the low 20’s to high 40’s for the most part. Heavily grazed wheat having the lower yields.  It has been noted some intensively managed fields have been yielding 50, with a few yields in the lower 70’s being reported.  Test weights ranging from 60lbs. to 65lbs. per bushel.  Protein averages being reported from 10.5% to 12%, with the overall average being around 11.0% to 11.2%. 

Frederick- Great strides have been made in this area until cooler temperatures and higher humidities yesterday.  Yields being reported from as low as 25 to as high as 50 bushels per acre depending on management and whether or not it was grazed.  Test weights reported from 60lbs. to 63lbs. per bushel.  Protein average at 10.5%

Altus/Lone Wolf- Yields in this region mainly ranging from 35 to 40 bushels per acre. A couple of intensively managed fields making above 60 bushels per acre being reported. Test weights ranging from 60 lbs. to 64 lbs. per bushel. Harvest just getting a good start at these locations so no protein reports being made at this time. (Test cuttings and samples have been taken in at Hobart, Gotebo, Roosevelt, Sentinel, Rocky, Dill City and Cordell, but no actual reports being made until harvest starts in these regions.)

Greenfield- Early test weights being reported on one field making 58.5 lbs. per bushel.  Protein was reported at 13%, no yields reported.

Okarche- Early cuttings reporting yields from 40 to 45 bushels per acre. Test weights reported at 61 lbs. to 62 lbs. per bushel.  Protein reports on early cuttings coming in at 13.5%

Reeding- Early cuttings on a couple fields in this region had reports of yields making 45 to 50 bushels per acre. Test weights ranging from 60lbs. to 62lbs. per bushel.  No proteins being reported on the early cuttings.

Early reports in all locations show test weights ranging from 60 to 65 lbs. per bushel. Proteins ranging from 10.5% to 13.5%, with an overall average of proteins being reported at 11.0% to 11.2%. The wheat being harvested in Southwest Oklahoma has not been stressed as much, so it is thought proteins will get higher as harvest progresses North where we have drought stress. Early yields being reported at 40 to 45 bushels per acre in most regions.  Higher yields being reported on intensively managed wheat with some yields on a few fields being reported in the mid 60’s to low 70’s.  The regions where this is being reported is considered the bright spot of the state for growing conditions this year. The state has received a large amount of hail damage in South Central, Southwest, and Northern, Oklahoma over the past two weeks.  Producers are hoping future predicted storms for tonight and over the weekend subside. The next harvest report to be published will be Tuesday, May 28th.  In honor of all the Veterans and Active Service members the Oklahoma Wheat Commission wants to wish everyone a Happy Memorial Day weekend!

Below, see the 6-10 day precipitation and storm potential outlook provided by the Oklahoma Mesonet.

Oklahoma Wheat Harvest for 2024 Season Begins in Southwest Oklahoma

By: The Oklahoma Wheat Commission

Oklahoma wheat harvest has started in multiple locations in Southwest, Oklahoma over the weekend, with the wheat being 10 days ahead of normal schedule.   It has been reported that over 100,000 bushels was received between locations at Grandfield and Devol.  Trucks have also been received at Frederick. Early cutting has also started around Temple, Walters and Chattanooga. Test cutting has taken place around Altus with some producers hoping to start this afternoon. 

Early reports in all locations show test weights ranging from 60 to 63 lbs. per bushel. (The wheat reported at 60 lbs. per bushel was at a higher moisture level, so producers are hopeful as moisture goes down test weights will still go up.)

Proteins ranging from 11.1% to 12.5% with more of the proteins on early cuttings being reported in the 11.9% to 12.5% range. Early yields being reported at 40 to 45 bushels per acre.  Higher yields are predicted on intensively managed wheat.  Keep in mind this region has been considered the bright spot of the state for growing conditions this year. The state has received a large amount of hail damage in South Central, Oklahoma last night with large amounts of hail damage in other regions of Southwest Oklahoma and Northern Oklahoma over the past two weeks.  A more comprehensive report will be published on Thursday, May 23, 2024.

Below, see the 7-day forecast provided by the Oklahoma Mesonet.

2024 OSU Wheat Plot Tours and wheat status

Howdy folks! It is that time of the year. The OSU Wheat Plot Tours have been scheduled, and the schedule is posted on the wheat website click here and also pasted below.

Wheat is looking good for the most part, especially when compared to last year. Some parts of the state are very dry (see picture below of the wheat in Cherokee). We could use some rain. Stripe rust showed up early in the season, which caused wheat leaf damage, especially on the wheat in the southwest region. We are still seeing it spreading throughout the state. Many fungicide applications happened in the past weeks.

In the plot tours, we will discuss wheat management practices and varieties, including their differences in disease resistance, grazing and yield potential, and other traits. In Apache and Kildare, you will be able to see our research on planting date, seeding rate, and varieties.

We will also have a field day at Rendel Farms in Miami, OK, on May 2nd. We will discuss the on-farm research being conducted there on planting date, seeding rate, and varieties. Drs. Arnall and Lofton will discuss their work as well.

We hope to see you there!

Cheers,

Amanda

Wheat variety trial at Chickasha on April 3rd, 2024. Photo: Joao Ferro, undergraduate visiting scholar in the Small Grains Lab
Wheat with stripe rust at the Lahoma variety trial on April 18, 2024. Photo: Juan Dietz, visiting research scholar in the Small Grains Lab.
Wheat variety trial at Cherokee on April 19th, 2024. Photo: Juan Dietz, visiting research scholar in the Small Grains Lab.

First Hollow Stem Update – 3/6/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 3/01/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 2/26/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 2/20/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 2/19/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 2/14/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely be moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student

First Hollow Stem Update – 2/9/2024

Amanda de Oliveira Silva, Small Grains Extension Specialist

First hollow stem (FHS) is the optimal time to remove cattle from wheat pasture. This occurs when there is 1.5 cm (5/8”, or the diameter of a dime) of hollow stem below the developing grain head (see full explanation). The latest FHS results from OSU forage trials in Stillwater (Table 1) and Chickasha (Table 2) are listed below. For an additional resource and wheat update on FHS, see the Mesonet First Hollow Stem Advisor

We use an accelerated growth system to report the earliest onset of FHS stage. Trials are seeded early to simulate a grazed system, but the forage is not removed. Varieties reported here with the earliest FHS date should be the first to monitor in commercial fields. In practice, wheat that is grazed will likely reach FHS stage later than reported here, and differences between varieties will likely moderate.

Table 1. First hollow stem (FHS) results for each variety collected at Stillwater. Plots were planted on 09/18/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Table 2. First hollow stem (FHS) results for each variety collected at Chickasha. Plots were planted on 09/21/23 but not grazed or clipped. The threshold target for FHS is 1.5 cm (5/8″ or the diameter of a dime). The value of hollow stem for each variety represents the average of ten measurements. Varieties exceeding the threshold are highlighted in red.

Contact your local Extension office and us if you have questions. 

Additional resources available:

Acknowledgments: 

Tyler Lynch, Senior Agriculturalist

Israel Molina Cyrineu, Graduate Research Assistant

Samson Abiola, Graduate Research Assistant

Lettie Crabtree, Undergraduate Student

Joao Ferro, Undergraduate Student