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Grain Sorghum Performance Trials in Oklahoma, 2023

Trial Objectives and Procedures 

Performance trials for hybrid grain sorghum are conducted by the Oklahoma Cooperative Extension Service each year. These trials provide producers, Extension educators, industry representatives and researchers with information for grain sorghum hybrids marketed in Oklahoma. Performance trials were planted at eight locations in 2023. All emerged and had decent early-season growth. However, due to dry conditions at planting, the Tipton location was terminated. Trials at Chickasha, McCaull, and Goodwell were irrigated using overhead sprinkler irrigation. Yields presented in this document are for the early, medium and late maturity hybrids for all locations. Most cultivars are similar among all locations. The exception to this is several early and medium cultivars, which are solely marketed to the panhandle region. Therefore, a number of cultivars are present in only at the three panhandle locations.

 

Grain sorghum hybrid trial entrants were assigned by companies to their respective maturity groups (early represented less than <60 days to mid-bloom (DMB), medium was 60 to 70 DMB, with late being than >70 DMB). If a cultivar was exactly 60 or 70 DMB, previous years data was used to determine which maturity the cultivar fell into. Companies designated all hybrid characteristics are presented in Table 1. This information was not determined or verified by Oklahoma State University. Company participation was voluntary; therefore, not all hybrids marketed in Oklahoma were included in the trials.

 

In 2023, 38 hybrids were entered by five seed companies.  For the hybrid performance trials, each maturity group was tested independently with individual hybrids being arranged in a randomized complete block design and having a minimum of four replications. All locations were two row plots with 30-inch spacing and 35 feet in length. Plots were trimmed to 25 feet prior to harvest. Tractor-powered cone planters were used to plant all trials with seeding rates adjusted for the trial location. Trials were harvested with a Kincaid model 8XP plot combine.

 

Planting densities, cooperating producers, cultural practices, soil series, herbicides and insecticides used in all trials are listed individually in result tables. Rainfall data from the nearest Mesonet sites are also listed. Some trials are long distances from the nearest Mesonet site; therefore, rainfall could be greater or less than reported.

 

Soil fertility practices will be discussed for each individual location following their yield tables. All applications were made in accordance with OSU Extension best management practices for management. Soil samples were collected in the winter and early spring prior to planting and submitted to the Soil, Water and Forage Analytical Laboratory for analysis. All N, P, and K applications were made based on these results. Nitrogen applications were made based on a 120 bu/ac yield goal, with the exception of Goodwell and McCaull which were made based on a 150 bu/ac yield goal. At all research station sites, soil pH is managed to be suitable for grain sorghum production. Locations on grower’s fields are not as controlled; however, all locations this season were within reasonable limits (5.5-7.5).

 

Due to the degree of variability between the sites in the study and grower’s fields around the state, discussions regarding the growing conditions will be made prior to each individual location.

 

 

Results 

Grain yields are reported in pounds per acre and bushels per acre of threshed grain, adjusted to a moisture content of 14% (Tables 2 through 21). Test weight is also reported in pounds per bushel. Different plant populations at each location prevent accurate comparison between locations. Also, comparisons across maturity were not conducted as they were treated as independent trials. Producers should note that late-maturing hybrids, due to longer periods of vegetative and early reproductive growth, will generally yield more than early- and medium-maturity hybrids. The availability of moisture at critical crop development stages; however, often influences yield more than the yield differences associated with maturity groups. When choosing a maturity group, the type of cropping system, planting date, planting rate and potential moisture should be taken into consideration. For more information, consult Fact Sheet PSS-2034, Grain Sorghum Planting Rates and Dates, and Fact Sheet PSS-2113 Grain Sorghum Production Calendar.

 

Least Significant Difference (LSD) is a statistical test of yield differences and is shown at the bottom of each table. Unless two hybrids differ by at least the LSD shown, little confidence can be placed in one hybrid being superior to another, and the difference is probably not real.

 

The Coefficient of Variation (CV) is provided as an estimate  of the precision of the data with respect to the mean for that location and maturity group. To provide some indication of yield stability, multi-year means for yields and test weights are provided where trials have been conducted for more than one year with more than three entries per maturity group. Producers interested in comparing hybrids for consistency of yield in a specific area should consult these entries. Models with CV's greater than 25 have not been included in this report.

 

 

Acknowledgements 

The financial support of the participating companies and the Oklahoma Sorghum Commission is gratefully acknowledged, as well as the efforts and resources provided by the producer-cooperators: Brook Strader and Jordan Sheer. The authors are also grateful for research support from Michael Pettijohn of SCREC, Mike Schulz of SWREC, Cameron Murley and Skeate Beck of OPREC, Ted Newell of MVRS, and Kenneth Watkins of CVRS. We are also grateful for the help of County Agricultural Educators: Aaron Henson (Tillman County), Troy Gosney (Major County), Gus Holland (Tulsa County), and David Nowlin (Caddo County) who gave generously of their time to this project in 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of April 2023.

Total Rainfall

Figure 1. Departure from average rainfall for April 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of May 2023.

Total Rainfall

Figure 2. Departure from average rainfall for May 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of June 2023.

Total Rainfall

Figure 3. Departure from average rainfall for June 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of July 2023.

Total Rainfall

Figure 4. Departure from average rainfall for July 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of August 2023.

Total Rainfall

Figure 5. Departure from average rainfall in August 2023.

 

A map of Oklahoma showing each county and the average rainfall of the month of September 2023.

Total Rainfall

Figure 6. Departure from average rainfall in September 2023.

 

A map of Oklahoma showing each county and the average Air Temperature of the month of August 2023.

 

Figure 7. Average maximum air temperature for August 2023.

 

A map of Oklahoma showing each county and the average Air Temperature of the month of September 2023.

 

Figure 8. Average maximum air temperature for September 2023.

 

Table 1. Sorghum cultivars utilized in the performance trial in 2023 along with associated company and agronomic information.
Company Hybrid Maturity Seed Color DMB
Kauffman Seeds 5563 E Bronze 56
Kauffman Seeds 5583 E Bronze 58
Kauffman Seeds 5603 E Red 60
Kauffman Seeds 5710 M Bronze 64
Kauffman Seeds 5643 M Bronze 64
Kauffman Seeds 5730 M Red 69
Kauffman Seeds 5653IG M Red 65
Dyna-Gro M54GR24 E Red 54
Dyna-Gro M59GB57 E Bronze 59
Dyna-Gro M59GB94 E Bronze 59
Dyna-Gro M60GB31 M Bronze 62
Dyna-Gro M60GB88 M Bronze 60
Dyna-Gro M63GB78 M Bronze 63
Dyna-Gro M67GB87 M Bronze 67
Dyna-Gro GX22932 M Red 68
Dyna-Gro GX22934 M Bronze 70
Dyna-Gro GX22936 M Bronze 65
Dyna-Gro GX22937 M Bronze 69
Dyna-Gro GX22923 M Cream 61
Dyna-Gro M71GR91 L Red 71
Dyna-Gro M72GB71 L Bronze 72
Dekalb DKS-28-07 E Bronze 57
Dekalb DKS-36-07 M Bronze 62
Dekalb DKS-33-07 M Bronze 62
Dekalb DKS-44-07 M Red 67
Dekalb DKS-50-07 M Red 69
Dekalb DKS-54-07 L Red 72
Sorghum Partners SP 43M80 M Bronze 60
Sorghum Partners SP-67B17 M Bronze 67
Sorghum Partners SP 66M16 M Bronze 66
Sorghum Partners SP 65M60 M Bronze 65
Sorghum Partners SPSD 353 M Bronze 67
Sorghum Partners SP 7715 L Bronze 70
Advanta/Alta Grain ADV G2106 M Red 62
Advanta/Alta Grain ADV G2165 M Red 66
Advanta/Alta Grain ADV G2168IG M Red 66
Advanta/Alta Grain ADV G2193IG M Red 68
Advanta/Alta Grain ADV G1329 M Cream 60

 

Chickasha 

The Chickasha location experienced a relatively normal year. Near normal rainfall throughout April and early May resulted in adequate to above average stands. However, since precipitation was not excessive, preplant herbicides were effective at maintaining a weed-limited environment during the first 30 days of growth. A flush of weeds during  vegetative growth required an application of Huskie prior to canopy closure. This was primarily made to control pigweeds and other miscellaneous broadleaf weeds. Subsequent flushes of weeds required manual removal. This occurred  during the early dough stages. Heat stress was experienced during the later stages of growth. Moisture stress was not experienced due to the ability to provide moderate irrigation in order to not lose the trial. One-inch weekly applications of moisture were applied during August and September but were terminated at first stages of black-layer of any cultivar.  These irrigation applications were made with a sprinkler irrigation system. Because irrigation was terminated at first  signs of black-layer, this did favor the early- and medium-maturing cultivars as they were at or near maturity, while the late-maturing cultivars were not quite at physiological maturity. This impact can be seen from the yields across the trial. Periodic moisture and some regrowth of tillers did make it necessary to desiccate the trial and an application of glyphosate was made prior to harvest. No major insect pests or diseases were experienced throughout the trial. Late-season charcoal rot evaluations resulted in no appreciable numbers.

 

Cooperator: Matt Pettijohn

Tillage Practice: Conventional

Soil Series: Dale Silt Loam

Seeding rate: 37,600 seeds/ac

Herbicide: Preemergence: 2.7 qt/ac Charger Max ATZ + 44oz glyphosate/ac

In-season: 16 oz Huskie in-season

Fertilizer: N- 140 lbs/ac

Planting Date: May 9

Harvest Date: September 18

 

Table 2. Early cultivars from the Chickasha location in 2023.
Company  Cultivar  Yield lbs/ac  Percent of Trial Average  Moisture %  Test Weight lbs/bu 
Kauffman Seeds 5563 7176 129.3 11.2 58.1
Kauffman Seeds 5583 4738 85.4 10.8 55.7
Kauffman Seeds 5603 5459 98.4 11.1 56.1
Dyna-Gro M54GR24 3753 67.6 12.3 55.3
Dyna-Gro M59GB57 5634 101.5 11.8 56.7
Dyna-Gro M59GB94 6853 123.5 12.1 54.3
Dekalb DKS 28-07 5235 94.3 10.0 55.0
           
Average    5549   11.3 55.9
CV (%)    17.5      
LSD (0.05)    1003.2      

 

Table 3. Medium cultivars from the Chickasha location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5710 6294 93.4 10.4 56.1
Kauffman Seeds 5643 7661 113.6 11.7 55.4
Kauffman Seeds 5730 7606 112.8 10.5 58.2
Kauffman Seeds 5653IG 7873 116.8 9.8 54.1
Sorghum Partners SP 43M80 6476 96.1 9.9 52.6
Sorghum Partners SP 67B17 5779 85.7 11.1 53.8
Sorghum Partners SP 66M16 6618 98.2 12.4 56.2
Sorghum Partners SP 65M60 6182 91.7 10.6 56.0
Sorghum Partners SPSD 353 7723 114.5 11.7 57.4
Dyna-Gro M60GB31 7423 110.1 10.3 55.2
Dyna-Gro M60GB88 6238 92.5 10.8 53.9
Dyna-Gro M63GB78 5844 86.7 11.5 52.9
Dyna-Gro M67GB87 7196 106.7 12.3 55.6
Dyna-Gro GX22932 6183 91.7 11.4 57.3
Dyna-Gro GX22934 7170 106.3 10.6 54.1
Dyna-Gro GX22936 7240 107.4 10.8 53.8
Dyna-Gro GX22937 8368 124.1 11.2 56.7
Dyna-Gro GX22923 5606 83.2 10.4 52.3
Dekalb DKS 36-07 7924 117.5 11.3 55.8
Dekalb DKS 33-07 6939 102.9 12.5 54.9
Dekalb DKS 44-07 7475 110.9 9.8 56.1
Dekalb DKS 50-07 7823 116.0 10.3 55.1
Advanta/Alta Grain ADV G2106 5493 81.5 11.6 55.0
Advanta/Alta Grain ADV G2165 7228 107.2 10.3 54.7
Advanta/Alta Grain ADV G2168IG 5571 82.6 10.0 56.9
Advanta/Alta Grain ADV G2193IG 6154 91.3 9.7 55.3
Advanta/Alta Grain ADV G1329 3953 58.6 11.3 50.8
           
Average   6742   10.9 55.0
CV (%)   12.4      
LSD (0.05)   906.8      

 

Table 4. Late cultivars from the Chickasha location in 2023.
Company  Cultivar  Yield lbs/ac  Percent of Trial Average  Moisture %  Test Weight lbs/bu 
Sorghum Partners SP 7715 1063 61.8 14.5 51.2
Dyna-Gro M71GR91 2356 137.2 15.3 53.4
Dyna-Gro M72GB71 2356 137.2 14.7 53.7
Dyna-Gro DKS 54-07 1096 63.8 13.9 50.05
           
Average    1718   14.6 52.2
CV (%)    29.7      
LSD (0.05)    529.7      

 

 

Homestead 

This trial was located on a cooperator's field (Brook  Strader) near Homestead, Oklahoma. This location is typically rotated with a winter wheat cover or soybean. The Homestead location in 2023 was potentially one of the most consistent trials. Timely rainfall resulted in above-average stands early in the season. As with the other locations, early-season weed control was very good for the first 30 days. A break in control did happen during the vegetative growing period. Since this was primarily pigweed and marestail, this resulted in an application of Huskie. This was the only in-season weed management practice needed. Even with prolonged heat and drought stress, no supplemental irrigation was applied throughout the growing season. Light to moderate true and false chinch bug activity did result in light to moderate stress on the crop. However, when evaluating lodging for the crop, no significant lodging (the primary risk for chinch bugs) was noted for any cultivar or any region throughout the trial. No chemical applications were made for control. No other significant insect pests or diseases were present throughout the season.

 

Cooperator: Brook Strader

Tillage Practice: Conventional

Soil Series: Canadian Fine Sandy Loam

Seeding rate: 37,600 seeds/ac

Herbicide: Preemergence: 2.7 qt/ac Charger Max ATZ + 44oz glyphosate/ac In-season: 16 oz Huskie in-season

Fertilizer: N- 140 lbs/ac; P- 60 lbs/ac; K- 60 lbs/ac

Planting Date: May 3

Harvest Date: September 8 

 

Table 5. Early cultivars from the Homestead location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5563 7959 142.1 13.2 61.7
Kauffman Seeds 5583 5084 90.8 11.2 56.9
Kauffman Seeds 5603 6008 107.3 11.3 57.1
Dyna-Gro M54GR24 4598 82.1 11.9 58.0
Dyna-Gro M59GB57 5885 105.1 11.1 56.1
Dyna-Gro M59GB94 6076 108.5 11.9 59.3
Dekalb DKS 28-07 5905 105.4 11.5 57.4
           
Average   5931   11.7 58.1
CV (%)   10.2      
LSD (0.05)   607.8      

 

Table 6. Medium cultivars from the Homestead location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5710 6328 113.0 11.2 58.7
Kauffman Seeds 5643 6795 121.3 11.2 57.3
Kauffman Seeds 5730 6865 122.6 12.0 60.2
Kauffman Seeds 5653IG 7519 134.3 12.3 62.2
Sorghum Partners SP 43M80 4876 87.1 11.5 58.2
Sorghum Partners SP 67B17 4750 84.8 11.7 56.1
Sorghum Partners SP 66M16 5135 91.7 10.9 56.4
Sorghum Partners SP 65M60 6411 114.5 10.2 54.1
Sorghum Partners SPSD 353 5915 105.6 11.7 58.4
Dyna-Gro M60GB31 5408 96.6 10.8 57.0
Dyna-Gro M60GB88 5945 106.2 10.9 57.4
Dyna-Gro M63GB78 4896 87.4 11.1 56.9
Dyna-Gro M67GB87 6450 115.2 12.1 57.5
Dyna-Gro GX22932 6528 116.6 11.4 60.4
Dyna-Gro GX22934 7303 130.4 12.2 61.0
Dyna-Gro GX22936 6880 122.9 11.8 59.4
Dyna-Gro GX22937 7630 136.3 11.9 60.6
Dyna-Gro GX22923 5156 92.1 11.0 56.5
Dekalb DKS 36-07 6575 117.4 11.6 59.4
Dekalb DKS 33-07 5765 102.9 11.3 57.8
Dekalb DKS 44-07 7538 134.6 11.7 60.4
Dekalb DKS 50-07 7381 131.8 12.1 61.8
Advanta/Alta Grain ADV G2106 3936 70.5 11.2 58.6
Advanta/Alta Grain ADV G2165 5768 103.0 11.9 58.7
Advanta/Alta Grain ADV G2168IG 4925 87.9 11.0 58.2
Advanta/Alta Grain ADV G2193IG 5036 89.9 11.1 56.7
Advanta/Alta Grain ADV G1329 2513 44.9 7.4 34.5
           
Average   5935   11.3 57.6
CV (%)   16.4      
LSD (0.05)   1313.7      

 

Table 7. Late cultivars from the Homestead location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Sorghum Partners SP 7715 4903 87.5 11.0 57.6
Dyna-Gro M71GR91 6788 121.2 11.4 61.7
Dyna-Gro M72GB71 5231 93.4 11.0 59.1
Dekalb DKS 54-07 6056 108.1 11.0 60.5
           
Average   5744   11.1 59.7
CV (%)   9.8      
LSD (0.05)   609.3      

 

 

Perkins 

The Perkins location was at the Cimarron Valley Research  Station near Perkins, Oklahoma. The previous crop was a mix of soybean agronomic trials from the previous year; however, none had a significant impact on trial variability. The trial was planted into a tilled field. Dry conditions in early spring paired  with excessive moisture in middle to end of April resulted in delayed preparation of site location. However, when the trial was able to be planted, adequate moisture and warming soil temperatures resulted in stands that were average to above-average which developed very quickly. Early season weed management was very good but continued moisture into May resulted in continued flushes of weeds that had to  be controlled with a combination of chemical applications and physical removal. Weeds continued to be an issue throughout the year and had to be continually managed. As this was primarily grassy weeds, physical removal continued to be the primary means of control. Even with prolonged heat and drought stress, no supplemental irrigation was applied throughout the growing season. Very light chinch bug activity  was noted in the middle of the season. However, this minor stress resulted in very little impact on the crop. No other disease or insect pressure was noted throughout the season.

 

Cooperator: Kenneth Watkins

Tillage Practice: Conventional

Soil Series: Teller Fine Sandy Loam

Seeding rate: 37,600 seeds/ac

Herbicide: Preemergence: 2.7 qt/ac Charger Max ATZ + 44oz glyphosate/ac

In-season: 16 oz Huskie in-season

Fertilizer: N- 140 lbs/ac; P- 60 lbs/ac; K- 60 lbs/ac

Planting Date: May 3

Harvest Date: September 8 

 

Table 8. Early maturity grain sorghum hybrids (≤60 days until mid-bloom) yields at the Cimarron Research Station in Perkins, Oklahoma, for the 2023 season.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5563 7445 134.9 11.7 59.9
Kauffman Seeds 5583 4680 84.8 10.1 55.2
Kauffman Seeds 5603 4990 90.4 10.2 57.2
Dyna-Gro M54GR24 4412 79.9 10.5 56.9
Dyna-Gro M59GB57 5308 96.2 10.2 55.0
Dyna-Gro M59GB94 6313 114.4 10.8 58.0
Dekalb DKS 28-07 5662 102.6 10.2 54.8
           
Average   5544   11.0 57.0
CV (%)   15.7      
LSD (0.05)   1818      

 

Table 9. Medium maturity grain sorghum hybrids (60-70 days until mid-bloom) yields at the Cimarron Research Station in Perkins, Oklahoma, for the 2023 season.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5710 5761 94.9 10.8 57.8
Kauffman Seeds 5643 6307 103.9 10.2 55.0
Kauffman Seeds 5730 7394 121.8 11.4 58.3
Kauffman Seeds 5653IG 7153 117.8 11.1 59.5
Sorghum Partners SP 43M80 5872 96.7 11.1 57.0
Sorghum Partners SP 67B17 5103 84.0 11.7 56.2
Sorghum Partners SP 66M16 6424 105.8 11.7 56.9
Sorghum Partners SP 65M60 6418 105.7 10.1 54.6
Sorghum Partners SPSD 353 6349 104.6 10.7 57.5
Dyna-Gro M60GB31 6316 104.0 10.4 57.6
Dyna-Gro M60GB88 4892 80.6 10.3 55.6
Dyna-Gro M63GB78 5124 84.4 10.6 56.9
Dyna-Gro M67GB87 5367 88.4 10.7 55.8
Dyna-Gro GX22932 6402 105.4 10.9 59.1
Dyna-Gro GX22934 7463 122.9 10.9 59.0
Dyna-Gro GX22936 6097 100.4 10.8 57.7
Dyna-Gro GX22937 7644 125.9 10.7 56.6
Dyna-Gro GX22923 4332 71.3 10.3 54.7
Dekalb DKS 36-07 5928 97.6 10.8 57.7
Dekalb DKS 33-07 6095 100.4 10.9 57.8
Dekalb DKS 44-07 7574 124.7 10.8 59.3
Dekalb DKS 50-07 7331 120.7 11.3 59.4
Advanta/Alta Grain ADV G2106 5580 91.9 10.2 57.0
Advanta/Alta Grain ADV G2165 6892 113.5 11.5 57.7
Advanta/Alta Grain ADV G2168IG 5195 85.6 10.4 56.6
Advanta/Alta Grain ADV G2193IG 5187 85.4 10.9 55.9
Advanta/Alta Grain ADV G1329 3704 61.0 10.1 54.9
           
Average   6070   10.8 57.1
CV (%)   12.4      
LSD (0.05)   1407      

 

Table 10. Late maturity grain sorghum hybrids (≥70 days until mid-bloom) yields at the Cimarron Research Station in Perkins, OKlahoma, for the 2023 season.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Sorghum Partners SP 7715 4791 88.1 11.0 56.5
Dyna-Gro M71GR91 5665 104.2 11.2 58.7
Dyna-Gro M72GB71 5880 108.2 11.1 57.8
Dekalb DKS 54-07 5408 99.5 10.9 58.0
           
Average   5436   11.0 57.7
CV (%)   11.6      
LSD (0.05)   855      

 

 

Bixby 

The Bixby location is the program’s only eastern Oklahoma site, which is often noted for having more stable temperatures and consistent rainfall patterns. This allows for a different look at cultivar performance under these conditions. In 2023, this location was not exempt from hot and dry condition and experienced substantially higher temperatures and lower in-season precipitation than normal for this location, especially in the early months of the year. Similar to other locations, preplant herbicide applications did help with early-season weed control. This location is noted for having heavy pigweed and grass pressure. Grasses were not an issue throughout the growing season, with only minor issues with a patch of Bermudagrass located in early maturing cultivars in the third replication. This was managed through physical removal but did cause slight reductions in yields and increased variability. However, since the pressure was consistent across the early cultivars, this replication was maintained for analysis. Only a minor amount of pigweed was noted during the course of the year and was manually removed during early flowering/ grain fill stages. Chinch bug pressure was higher here than  any other location during 2023. A pyrethroid insecticide was applied across the trial at early reproductive growth via a high-clearance sprayer. These applications did not completely control the pests but did minimize additional growth of populations. While this location can be irrigated, no irrigation was applied due to mechanical issues with the irrigation pump, therefore this should be considered a completely dryland trial in 2023. No significant diseases were present throughout the  season. Recent research has also shown that N applications do not have to be as high at this location as it often follows several years of soybean, which was the reason for the lower N application rates.

 

Cooperator: Ted Newell

Tillage Practice: Conventional

Soil Series: Wynona Silty Clay Loam

Seeding rate: 37,600 seeds/ac

Herbicide: Preemergence: 2.7 qt/ac Charger Max ATZ + 44oz glyphosate/ac Fertilizer: N- 60 lbs/ac

Planting Date: May 30

Harvest Date: October 21 

 

Table 11. Early cultivars from the Bixby location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5563 5568 180.8 16.9 55.2
Kauffman Seeds 5583 2615 84.9 19.6 51.2
Kauffman Seeds 5603 2493 80.9 17.3 52.5
Dyna-Gro M54GR24 1591 51.7 17.7 53.3
Dyna-Gro M59GB57 2884 93.6 17.0 56.6
Dyna-Gro M59GB94 3739 121.4 16.0 51.0
Dekalb DKS 28-07 2669 86.7 18.0 50.7
           
Average   3080   17.5 52.9
CV (%)   17.8      
LSD (0.05)   879.6      

 

Table 12. Medium cultivars from the Bixby location in 2023.
Company Cultivar Yield
lbs/ac
Percent of Trial
Average
Moisture
%
Test Weight
lbs/bu
Kauffman Seeds 5710 6539 100.3 16.5 53.8
Kauffman Seeds 5643 7808 119.7 16.3 51.5
Kauffman Seeds 5730 6880 105.5 16.7 54.3
Kauffman Seeds 5653IG 6476 99.3 16.1 54.8
Sorghum Partners SP 43M80 5326 81.7 18.3 48.8
Sorghum Partners SP 67B17 5784 88.7 16.7 51.0
Sorghum Partners SP 66M16 6413 98.4 15.9 52.5
Sorghum Partners SP 65M60 5738 88.0 15.4 49.3
Sorghum Partners SPSD 353 6809 104.4 16.8 53.6
Dyna-Gro M60GB31 7670 117.6 16.3 53.5
Dyna-Gro M60GB88 5756 88.3 15.4 51.8
Dyna-Gro M63GB78 6933 106.3 16.6 53.9
Dyna-Gro M67GB87 7856 120.5 17.1 51.9
Dyna-Gro GX22932 7100 108.9 16.3 51.7
Dyna-Gro GX22934 8080 123.9 16.7 54.7
Dyna-Gro GX22936 6364 97.6 17.0 53.6
Dyna-Gro GX22937 7578 116.2 16.4 50.5
Dyna-Gro GX22923 5445 83.5 15.6 49.3
Dekalb DKS 36-07 7038 107.9 16.0 53.5
Dekalb DKS 33-07 5428 83.2 16.1 51.7
Dekalb DKS 44-07 5575 85.5 15.6 51.2
Dekalb DKS 50-07 7186 110.2 17.1 54.9
Advanta/Alta Grain ADV G2106 6293 96.5 16.4 53.2
Advanta/Alta Grain ADV G2165 5241 80.4 16.8 52.3
Advanta/Alta Grain ADV G2168IG 6163 94.5 15.7 50.6
Advanta/Alta Grain ADV G2193IG 5579 85.6 16.0 52.6
Advanta/Alta Grain ADV G1329 6988 107.2 17.1 52.3
           
Average   6520   16.4 52.3
CV (%)   11.4      
LSD (0.05)   1047.2      

 

Table 13. Late cultivars from the Bixby location in 2023. 
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Sorghum Partners SP 7715 7491 98.4 16.1 55.5
Dyna-Gro M71GR91 7360 96.7 16.3 54.9
Dyna-Gro M72GB71 8020 105.3 16.2 55.1
Dekalb DKS 54-07 7589 99.7 15.9 55.3
           
Average   7615   16.1 55.2
CV (%)   4.7      
LSD (0.05)   449.2      

 

 

Slapout 

This trial was on a grower field (Jordan Shearer) near  Slapout, Oklahoma. The trial is a traditional sorghum and wheat rotation for the region. The trial was planted in the middle of June, which was typically later than normal for this region. This was due to a combination of cooler soils and challenges with soil moisture. Due to rapid warming and good early soil moisture, the trial emerged very quickly and was able to get an adequate stand within the first 7-10 days (depending on  maturity). Growth and development of the trial continued and progressed very well during June and July due to consistent moisture patterns. This did lead to several flushes of weeds  in the trial that were managed by manual removal several times during the course of the season. This continued until mid-August when dry conditions and above average temperatures returned to the region. This occurred during later stages of reproductive growth and early grain fill, especially  for the longer maturity cultivars. This stress became severely yield limiting during the later stages of reproductive growth and limited the top end of yield potential for the cultivars. This later season stress can also be seen on the lower test weights for a majority of the cultivars compared to other trial locations in 2023. No major disease or insect issues were noted at the Slapout location and therefore were not managed.

 

Cooperator: Jordan Shearer

Tillage Practice: Conventional

Soil Series: Oklark-Alopark Loams

Seeding rate: 37,600 seeds/ac

Herbicide: Burndown: 24 oz glyphosate/ac + 10 oz dicamba/ac Preemergence: 1 pt atrazine/ac + 1.3 pt S-Metolachlor + 1 oz Saflufenacil/ac

Fertilizer: 60 lbs N/ac + 20 lbs P/ac

Planting Date: June 14

Harvest Date: November 8

 

Table 14. Early cultivars from the Slapout location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5563 3819 119.1 15.0 60.0
Kauffman Seeds 5583 2900 90.5 12.4 54.1
Kauffman Seeds 5603 3575 111.5 12.0 56.1
Dyna-Gro M54GR24 3445 107.5 11.5 54.8
Dyna-Gro M59GB57 2906 90.7 11.6 55.0
Dyna-Gro M59GB94 2533 79.0 13.5 56.6
Dekalb DKS 28-07 3264 101.8 11.9 53.4
           
Average   3206   12.5 55.7
CV (%)   11.1      
LSD (0.05)   422      

 

Table 15. Medium cultivars from the Slapout location in 2023.
Company Cultivar Yield
lbs/ac
Percent of
Trial Average
Moisture
%
Test Weight
lbs/bu
Kauffman Seeds 5710 3778 157.5 13.7 56.4
Kauffman Seeds 5643 2475 103.2 13.6 53.7
Kauffman Seeds 5730 2599 108.4 15.1 56.4
Kauffman Seeds 5653IG 2441 101.8 14.5 55.1
Sorghum Partners SP 43M80 1926 80.3 13.8 54.1
Sorghum Partners SP 67B17 2050 85.5 13.7 56.0
Sorghum Partners SP 66M16 2253 93.9 13.7 55.1
Sorghum Partners SP 65M60 1724 71.9 13.4 51.6
Sorghum Partners SPSD 353 1845 76.9 12.7 52.2
Dyna-Gro M60GB31 1655 69.0 13.6 50.7
Dyna-Gro M60GB88 2416 100.7 12.3 50.6
Dyna-Gro M63GB78 2189 91.3 15.8 54.6
Dyna-Gro M67GB87 2805 117.0 14.7 53.4
Dyna-Gro GX22932 1988 82.9 16.4 52.8
Dyna-Gro GX22934 2304 96.1 13.7 55.6
Dyna-Gro GX22936 3404 141.9 13.2 50.2
Dyna-Gro GX22937 3111 129.7 14.1 53.6
Dyna-Gro GX22923 2490 103.8 13.3 52.4
Dekalb DKS 36-07 2824 117.7 12.2 51.2
Dekalb DKS 33-07 3065 127.8 14.2 53.5
Dekalb DKS 44-07 2798 116.6 13.0 56.4
Dekalb DKS 50-07 2545 106.1 15.7 55.5
Advanta/Alta Grain ADV G2106 1586 66.1 13.5 51.1
Advanta/Alta Grain ADV G2165 1964 81.9 15.4 53.3
Advanta/Alta Grain ADV G2168IG 1739 72.5 13.4 50.9
Advanta/Alta Grain ADV G2193IG 2026 84.5 12.5 51.8
Advanta/Alta Grain ADV G1329 2760 115.1 12.8 52.1
           
Average   2398   13.8 53.3
CV (%)   17.4      
LSD (0.05)   522.8      

 

 

Goodwell 

The Goodwell location was at the Oklahoma Panhandle Research and Extension Center (OPREC) and was under an overhead sprinkler irrigation system. The trial was strip tilled into the previous year’s corn crop. The trial was fertilized through the strip-till unit. The location had adequate moisture prior to planting as well as good moisture following; therefore, emergence was not an issue, and an adequate stand was achieved. Due to moisture early in the season, weeds were a continual issue this season. These weeds were predominately volunteer corn early in the season and a mix of annual grasses and pigweed later in the season. These were controlled with a combination of chemical applications and manual removal (after chemicals were no longer labeled). Irrigation was needed throughout the middle and later portions of the season. Unfortunately, irrigation was delayed by a week or two due to mechanical issues. This could have attributed to the minor decrease in yields compared to other irrigated locations in the panhandle. However, this was not universal, and some cultivars exhibited greater stress compared to others. No significant  insect and disease pressure was noted at this location.

 

Cooperator: Cameron Murley

Tillage Practice: Strip-tilled into corn residue

Soil Series: Gruver Clay Loam

Target Population: 66,000 seeds/ac

Fertilizer: 200 lbs N/ac, 65 lbs P/ac

Planting Date: June 14

Harvest Date: November 8 

 

Table 16. Application date, application and rate of the Goodwell location in 2023.
Application Date Application Rate
April 5 Flumioxazin 2 oz
  Dicamba 12 oz
  Atrazine 32 oz
  Saflufenacil 2 oz
May 17 Atrazine 48 oz
  Fluroxypyr 6.4 oz
  Glyphosate 32 oz
  Mesotrione 3 oz
  Acetochlor 40 oz
May 30 Saflufenacil 10 oz
  Glyphosate 32 oz
June 21 Fluroxypyr 6.4 oz
  S-Metolachlor 16 oz
July 26 2,4-D 16 oz
  Metsulfuron 0.5 oz
   

 

Table 17. Early cultivars from the Goodwell location in 2023.
Company Cultivar Yield
lbs/ac
Percent of
Trial Average
Moisture
%
Test Weight
lbs/bu
Kauffman Seeds 5563 6792 127.8 11.7 60.6
Kauffman Seeds 5583 4261 80.2 11.3 54.4
Kauffman Seeds 5603 6454 121.4 11.7 57.6
Dyna-Gro M54GR24 2749 51.7 11.3 53.5
Dyna-Gro M59GB57 5098 95.9 11.3 56.1
Dyna-Gro M59GB94 5479 103.1 11.5 57.2
Dekalb DKS 28-07 6381 120.0 11.2 57.7
           
Average   5316   11.4 56.7
CV (%)   21.2      
LSD (0.05)   1088.6      

 

Table 18. Medium cultivars from the Goodwell location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5710 2699 68.9 12.4 54.9
Kauffman Seeds 5643 4345 111.0 8.6 42.1
Kauffman Seeds 5730 6503 166.1 12.1 61.4
Kauffman Seeds 5653IG 5884 150.3 12.0 59.2
Sorghum Partners SP 43M80 1856 47.4 12.1 47.8
Sorghum Partners SP 67B17 1509 38.5 12.1 53.8
Sorghum Partners SP 66M16 3215 82.1 11.5 55.9
Sorghum Partners SP 65M60 4203 107.3 11.0 54.9
Sorghum Partners SPSD 353 4076 104.1 12.1 57.2
Dyna-Gro M60GB31 7196 183.8 11.8 60.6
Dyna-Gro M60GB88 3470 88.6 11.5 49.5
Dyna-Gro M63GB78 2843 72.6 9.6 47.1
Dyna-Gro M67GB87 3166 80.9 11.5 49.5
Dyna-Gro GX22932 6136 156.7 12.0 60.6
Dyna-Gro GX22934 5023 128.3 12.1 59.1
Dyna-Gro GX22936 4276 109.2 11.8 58.8
Dyna-Gro GX22937 6596 168.4 11.9 59.8
Dyna-Gro GX22923 4158 106.2 11.1 54.8
Dekalb DKS 36-07 4654 118.8 11.5 57.7
Dekalb DKS 33-07 2538 64.8 10.6 47.7
Dekalb DKS 44-07 3116 79.6 11.2 54.0
Dekalb DKS 50-07 5956 152.1 11.7 59.2
Advanta/Alta Grain ADV G2106 1985 50.7 10.2 45.0
Advanta/Alta Grain ADV G2165 2469 63.0 9.0 41.0
Advanta/Alta Grain ADV G2168IG 1005 25.7 6.4 28.6
Advanta/Alta Grain ADV G2193IG 2928 74.8 10.8 47.0
Advanta/Alta Grain ADV G1329 3928 100.3 11.1 57.0
           
Average   3916   11.1 53.0
CV (%)   29.8      
LSD (0.05)   1472.6      

 

Table 19. Late cultivars from the Goodwell location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Sorghum Partners SP 7715 6280 118.2 11.9 61.0
Dyna-Gro M71GR91 4525 85.2 11.9 60.5
Dyna-Gro M72GB71 3365 63.3 11.4 57.7
Dekalb DKS 54-07 7082 133.3 11.8 61.4
           
Average   5313   11.8 60.1
CV (%)   17.8      
LSD (0.05)   1037.5      

 

 

McCaull 

The trial location was at the McCaul Extension Farm near Elkhart, Kansas. The trial was strip tilled into previous wheat crop residue. All fertilizer was applied in the strip. The trial was irrigated with overhead sprinkler irrigation. The trial was on the inner irrigation spans of a quarter-acre pivot, with the outer spans planted to corn. With rainfall and irrigation applied prior to planting, soil moisture at planting was more than adequate. This resulted in very good stands shortly after planting. However, with the associated moisture, early flushes of weeds had to be sprayed  in order to maintain a weed-free environment. Successive flushes of weeds were controlled through manual removal. Minor delays in irrigation during the early portions of July and August did potentially increase stress of the trial, but significant yield limitations were not noted throughout the  trial. Lower yields for the later maturity cultivars can be explained by the increased temperature and lower natural rainfall during August and September. At the end of August, most of the early and medium cultivars had already begun to set and fill grain, while the later cultivars experienced this  stress during anthesis and early grain development. Stress during this period does tend to decrease yields compared to other later-season growth stages. No significant insect  or disease pressure was noted throughout the season.

 

Cooperator: Cameron Murley

Tillage Practice: Strip-tilled into wheat residue

Soil Series: Gruver Clay Loam

Target Population: 66,000 seeds/ac Fertilizer: 200 lbs N/ac, 65 lbs P/ac

Planting Date: June 14

Harvest Date: November 11 

 

Table 20. Application date, application and rate of the McCaull location in 2023.
Application Date Application Rate
April 10 Flumioxazin 2 oz
  Dicamba 12 oz
  Atrazine 32 oz
  Saflufenacil 2 oz
May 17 Atrazine 48 oz
  Fluroxypyr 6.4 oz
  Glyphosate 32 oz
  Mesotrione 3 oz
  Acetochlor 40 oz
May 30 Saflufenacil 10 oz
  Glyphosate 32 oz
June 21 Fluroxypyr 6.4 oz
  S-Metolachlor 16 oz
July 26 2,4-D 16 oz
  Metsulfuron 0.5 oz
   

 

Table 21. Early cultivars from the McCaull location in 2023.
Company Cultivar Yield
lbs/ac
Percent of
Trial Average
Moisture
%
Test Weight
lbs/bu
Kauffman Seeds 5563 7261 109.9 10.0 53.6
Kauffman Seeds 5583 7389 111.8 8.9 53.1
Kauffman Seeds 5603 7976 120.7 9.1 54.5
Dyna-Gro M54GR24 5903 89.3 9.1 54.0
Dyna-Gro M59GB57 5981 90.5 8.8 52.1
Dyna-Gro M59GB94 5258 79.6 9.6 50.1
Dekalb DKS 28-07 6478 98.0 9.1 53.1
           
Average   6606   9.2 52.9
CV (%)   11.7      
LSD (0.05)   788.9      

 

Table 22. Medium cultivars from the McCaull location in 2023.
Company Cultivar Yield lbs/ac Percent of Trial Average Moisture
%
Test Weight lbs/bu
Kauffman Seeds 5710 7990 113.2 9.1 48.0
Kauffman Seeds 5643 7318 103.6 9.6 55.2
Kauffman Seeds 5730 8734 123.7 10.0 58.3
Kauffman Seeds 5653IG 7599 107.6 10.4 59.8
Sorghum Partners SP 43M80 5994 84.9 9.9 56.8
Sorghum Partners SP 67B17 7446 105.5 10.0 56.9
Sorghum Partners SP 66M16 7473 105.8 9.9 57.9
Sorghum Partners SP 65M60 8114 114.9 9.5 53.1
Sorghum Partners SPSD 353 7058 100.0 9.6 56.4
Dyna-Gro M60GB31 7103 100.6 9.8 58.3
Dyna-Gro M60GB88 3801 53.8 7.4 41.8
Dyna-Gro M63GB78 7613 107.8 10.1 57.9
Dyna-Gro M67GB87 6335 89.7 9.9 56.2
Dyna-Gro GX22932 6953 98.5 10.4 60.3
Dyna-Gro GX22934 6808 96.4 10.1 59.5
Dyna-Gro GX22936 7240 102.6 9.6 56.6
Dyna-Gro GX22937 6433 91.1 10.1 59.3
Dyna-Gro GX22923 7723 109.4 9.7 56.1
Dekalb DKS 36-07 4616 65.4 9.7 53.7
Dekalb DKS 33-07 7421 105.1 9.8 56.4
Dekalb DKS 44-07 9050 128.2 10.3 58.9
Dekalb DKS 50-07 6724 95.2 10.2 57.6
Advanta/Alta Grain ADV G2106 5206 73.7 9.9 56.4
Advanta/Alta Grain ADV G2165 8659 122.6 10.0 58.4
Advanta/Alta Grain ADV G2168IG 6014 85.2 9.8 54.1
Advanta/Alta Grain ADV G2193IG 8190 116.0 9.5 55.6
Advanta/Alta Grain ADV G1329 7008 99.3 10.2 55.9
Average   7060   9.8 56.1
CV (%)   16.1      
LSD (0.05)   1306.6      

 

Table 23. Late cultivars from the McCaull location in 2023.
Company Cultivar Yield
lbs/ac
Percent of
Trial Average
Moisture
%
Test Weight
lbs/bu
Sorghum Partners SP 7715 4593 95.2 10.7 58.3
Dyna-Gro M71GR91 6170 128.0 10.6 59.6
Dyna-Gro M72GB71 2676 55.5 10.7 53.2
Dekalb DKS 54-07 5850 121.3 10.8 58.8
           
Average   4822   10.7 57.4
CV (%)   20.8      
LSD (0.05)   1508.9      
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