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Grain Sorghum Performance Trials in Oklahoma

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 conducted at 10 locations in 2019. Dry-land trials were planted at Adams, Chickasha, Homestead, Keyes, Lahoma, Perkins, Slapout and Tipton. Additionally, one fully sprinklerirrigated trial at the McCall Research Station near Elkhart and one limited drip-irrigated trial at Goodwell. Yields presented in this document are for the early, medium and late maturity hybrids for all locations. Trials were established in a timely manner at Perkins, Slapout and the drip-irrigated trial in Goodwell; however, all had to be abandoned. At the Perkins location, excessive rainfall led to poor stand establishment in-season. The trial was replanted shortly after original termination but excessive armyworm pressure resulted in uneven and inadequate stands. This location was replanted a third time as a late-planted, simulating a double-crop situation, with limited varieties (Table 21). The Slapout trial was established with timely herbicide and fertilization applications. However, prolonged drought conditions through July and August resulted in lack of panicle development and therefore was terminated. The drip-irrigated trial in Goodwell was planted immediately prior to multiple rainfall events and effective weed control was not able to be achieved.

 

Grain sorghum hybrids entered (Table 1) were assigned by companies to their respective maturity groups (early = less than 60 days to mid-bloom; medium = 60 to 69 days to mid-bloom; and late = 70 days and greater to mid-bloom) and trial locations; therefore all hybrids were not entered at all locations. Companies designated all hybrid characteristics 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 2019, 42 hybrids were entered by seven seed companies (Table 1). Among the varieties, only two cultivars were noted as susceptible to sugarcane aphids, with several that have not been evaluated or are currently going through evaluations. An additional trial was planted in 2019 to evaluate the performance of select sorghum hybrids to a late-planting system. This would be similar planting periods to a doublecrop system; however, it was planted without a previous crop (i.e. wheat was not planted the previous winter).

 

For the hybrid performance trial, each maturity group was tested independently in a randomized complete block design with 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 in the Panhandle and a Wintersteiger Delta combine for all downstate trials.

 

Target populations, cooperating producers, fertilization, cultural practices, soil series, herbicides and insecticides used in all trials are listed individually in the results 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.

 

Growing Conditions and Season Highlights

The 2019 production season will go down as one of the most challenging in recent history. This is primarily due to the large variation in environmental conditions growers faced. Diminished prices results in continued struggle for production agriculture as well. This is no different in the sorghum production system. Acres declined from previous years with projections of just under 300,000 acres planted in 2019. Oklahoma still remains as the fourth largest sorghum production state, just behind Colorado. However, many positive aspects were noted in the 2019 crop. Due to abnormal conditions at traditional planting periods, the number of double-crop sorghum acres began to rise. Double-crop sorghum was a vital part of the state’s acres prior to the sugarcane aphid (SCA). With the increased susceptibility to SCA of later planted double-crop sorghum, many of those acres were lost in previous years. Additionally, many growers have shifted their focus away from SCA management and back to inputs, management of grassy weeds and production efficiency. This is not to say growers will not continue to be mindful of SCA, but many believe this pest is manageable by taking the appropriate steps. Both of these changes will continue to increase promise in the production of sorghum in Oklahoma.

 

As mentioned previously, weather conditions were a driving factor in many of the management decisions growers made in 2019. In the downstate regions, cooler-than-average air temperatures in March and early April left soil temperatures on the border between acceptable and too cold for rapid sorghum emergence during these early planting windows. By mid to late April, temperatures increased to acceptable levels; however, heavy precipitation events resulted in unsuitable planting conditions for much of the state. Most growers were able to plant toward the later weeks of May, but this is typically much later in the year than would be acceptable for planting due to expected periods of unfavorable conditions during critical growth stages. With the later planting, much of the state’s crop was several weeks behind on expected growth throughout much of the early summer months. However, more favorable conditions and plenty of ground water resources allowed the crop to produce a significant amount of vegetative biomass.

 

The crop was still several weeks behind in many locations by the time it reached reproductive growth stages. As a result, many acres were progressing through anthesis and early grain fill during mid July, when temperatures reached greater than 100 F for several days. In many of the trials around the state, this resulted in periods of severely diminished head and grain fill. As the crop progressed through reproductive growth periods, temperatures began to decrease, but statewide rainfall did not return. Those systems west of I-35, particularly south of I-40, saw very little rainfall during these periods. This resulted in rapid dry-down. At many trial locations, this more rapid drydown resulted in grain yields that were lower than expected and more unfavorable test weights.

 

An early freeze event significantly impacted many sorghum fields throughout the state. This primarily impacted growers that were only able to plant much later or in a double-crop system. In these systems, tiller production is not nearly as beneficial as with normal planting and much of the yield is dependent on main stems. If growers were not able to harvest prior to this freeze, residual green tissue could have contributed to higher harvest difficulty or decreased harvest efficiency.

 

The panhandle region was met with its own set of unique challenges. Similar to downstate, the year started cooler than normal which delayed corn planting, in turn delaying grain sorghum planting. As most would typically plant within the last week in May through mid June, many growers were still planting into July. Favorable rain with good deep soil moisture was present at planting, however, this quickly diminished. Many growers received their last significant rainfall for the remainder of the growing season during the last week of June. A significant dry period with periods of very warm conditions took a toll on the sorghum crop. The region saw many growers abandon the crop due to insufficient growth and low yield potential. Those who did harvest reported well below-average yields for much of the region. There were pockets of areas that received rainfall at critical times, which resulted in average to above-average yields. Furthermore, it has been reported that growers who were forced to plant later in the year received more favorable conditions during flowering and grain fill. This resulted in better yields than those who planted earlier.  

 

Luckily, insect pests were not a major or widespread issue this season. Several places within the state had reported SCA pressure that reached or surpassed thresholds but a majority of the state saw only a minor impact from these pests. Early- and late-season worm pressure was present, but not wide spread. A major pest that continues to appear throughout the state is chinch bugs. It is still unknown how significant of a yield impact these pests can have, but its presence has been fairly widespread over the last several years. Diseases were of minor impact this year with only sporadic reports of charcoal rot and fusarium. Weeds continued to be a dominant pest. With excessive rainfall during the early growth stages, many pre-emergence programs were only moderately effective at controlling grassy weeds. The lack of early-season growth furthered this issue.

 

Results

Grain yields are reported in pounds per acre and bushels per acre of threshed grain, adjusted to a moisture content of 14 percent (Tables 2 through 23). Test weight is also reported in pounds per bushel. Bird damage is reported when present at a location. 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 periods 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, multiple-year means for yield and test weight 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.

 

Variability of yields within hybrids was higher than desirable in the 2018 season. Much of this variability can be associated with environmental conditions, particularly excessive moisture early and late-season drought. Plant populations also were lower and less uniform than usual, which may have contributed to the problem. Models with CV’s above 20 are not always reported, depending on location situations. However, when used, it should be with the understanding that a higher-than-desirable degree of variability existed around sample means. Models with CV’s greater than 25 have not been included in this report.

 

Acknowledgments

The financial support of the Oklahoma Sorghum Commission is gratefully acknowledged, as well as the efforts of the producer-cooperators: Brook Strader, Kenneth Rose and Leon Richard. The authors are also grateful for research support from Michael Pettijohn of SCREC, Erich Wehrenberg, Mike Schulz, Emily Landoll of SWREC and Cameron Murley, Skeate Beck and Jeremy Brian of OPREC. We are also grateful for the help of County Agricultural Educators: Rick Nelson (Garfield County), Aaron Henson (Tillman County), Nathan Anderson (Payne County), Troy Gosney (Major County) and David Nowlin (Caddo County) who gave generously of their time to this project in 2019

 

A map of Oklahoma showing the average soil temperature for March 2019.

 

Figure 1. Average soil temperature for March 2019.

 

A map of Oklahoma showing the average monthly rainfall in April 2019.

 

Figure 2. Average monthly rainfall in April 2019.

 

A map of Oklahoma showing the average monthly rainfall in May 2019.

 

Figure 3. Average monthly rainfall in May 2019.

 

A map of Oklahoma show the departure from average monthly rainfall in May 2019.

 

Figure 4. Departure from average monthly rainfall in May 2019.

 

A map of Oklahoma showing the average rainfall for July 2019.

 

Figure 5. Average monthly rainfall for July 2019.

 

A map of Oklahoma showing the departure from average rainfall for July 2019.

 

Figure 6. Departure from average rainfall for June 2018.

 

A map of Oklahoma showing the average rainfall for August 2019.

 

Figure 7. Average monthly rainfall for August 2019.

 

A map of Oklahoma showing the average monthly rainfall for August 2019.

 

Figure 8. Departure from average monthly rainfall for August 2019.

 

Table 1. Seed source and hybrid characteristics of grain sorghums in the Oklahoma Grain Sorghum Performance Trials, 2017. All hybrids are susceptible to birds and are single cross.

Company Hybrids Maturity Seed Color1 Days to Mid-bloom Sugarcane Aphid Tolerance2 Greenbug Resistance3
Advanta ADV G1329 Early Cr 58 Y --
Advanta ADV G2275 Medium -- 67 -- --
Advanta ADV XG 009IG Medium -- 65 -- --
Advanta ADV XG 390IG Medium -- 67 -- --
Advanta ADV XG141 Medium R 67 -- --
Advanta XG251 Medium R 68 -- --
Advanta ADV XG255 Medium R 67 -- --
Advanta ADV XG256 Medium R 66 -- --
Advanta ADV XG9127 Medium R 63 -- --
Advanta ADV XG397 Medium R 68 -- --
Advanta ADV XG885 Medium R 68 -- --
Advanta ADV G2106 Medium R 64 Y --
Advanta ADV XG224 Late R 70 -- --
Advanta ADV XG093 Late R 72 -- --
Advanta ADV G3247 Late -- 70 Y --
Alta Grain AG1201 Early Bz 60 Y --
Alta Grain Ag1203 Medium Bz 65 Y --
Dyna-Gro M60GB31 Early Bz 60 Y C&E
Dyna-Gro M60GB88 Early Bz 60 Y C&E
Dyna-Gro GX17973 Medium Bz 70 Y C&E
Dyna-Gro M62GB77 Medium Bz 62 Y C&E
Dyna-Gro M69GB38 Medium Bz 68 N --
Dyna-Gro M69GR88 Medium R 68 Y C&E
Dyna-Gro M74GB17 Late Bz 74 Y C&E
Dyna-Gro GX18395 Late Bz 71 Y C&E
Dyna-Gro GX18991 Late Bz 71 Y C&E
Dyna-Gro GX19981 Late Bz 72 Y C&E
Monsanto DKS 33-07 Medium Bz 61 Y --
Monsanto DKS 37-07 Medium Bz 62 Y --
Monsanto DKS 46-60 Medium Bz 68 Y --
Monsanto DKS 47-07 Medium Bz 68 Y --
Monsanto DKS 51-01 Medium Bz 69 Y --
Richardson Seed RS 124 Early R 53 Y --
Richardson Seed RS 230 Early R 62 Y C&E
Richardson Seed RS 320W Early WHT 60 Y C&E
Richardson Seed RS 260E Medium R 67 Y C&E
Sorghum Partners SP 31A15 Early Bz 57 N --
Sorghum Partners SP 43M80 Medium Bz 60 Y --
Sorghum Partners SP 68M57 Medium Bz 65 Y --
Sorghum Partners SP 73B12 Late Bz 71 Y --
Sorghum Partners SP 74M21 Late Bz 73 Y --
Sorghum Partners SP 74C40 Late Cr 73 Y --

1 Seed Color: Bz- Bronze; WHT- White; R- Red; Cr- Cream
2 Sugarcane Aphid Tolerance- Listed by parent company; -- does not indicate susceptibility but could also lack data associated
3 Greenbug Resistance: Biotype hybrid

 

Downstate Trials

 

Chickasha

 

Table 2. Early hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Chickasha.

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Lodging Rating 1-10 scale
Richardson Seed RS124 3,929 8.6 57.1 4.8
Richardson Seed RS230 3,424 8.8 62.5 5.3
Richardson Seed RS320W 2,999 8.9 56.5 8.0
Sorghum Partners SP 31A15  3,085  8.8  58.9 5.3
Dyna-Gro M60GB31 4,365 9.0 58.5 4.5
Dyna-Gro M60GB88 4,284 8.5 57.3 4.3
Advanta ADV G1329 3,344 8.4 52.8 5.5
Alta Grain AG 1201 3,838 8.5 56.7 5.0
           
Average   3,658 9.0 58 5.0
CV (%)   10.3      
LSD (0.05)   868      

 

Table 3. Medium hybrids from the Oklahoma Grain Sorghum Hybrid Tests located at Chickasha.

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Lodging Rating 1-10 scale
Advanta ADV G2275 4,293 8.8 60.1 4.3
Advanta ADV XG390IG 3,759 9.0 59.8 3.8
Advanta ADV XG009IG 4,388 8.6 58.3 3.1
Richardson Seed RS260E 3,674 9.3 63.4 6.0
Dekalb DKS 33-07 3,567 8.7 59.5 2.8
Dekalb DKS 37-07 3,015 8.9 57.7 5.0
Dekalb DKS 46-60 5,170 8.5 58.9 3.3
Dekalb DKS 47-07 4,589 8.9 60.7 5.8
Dekalb DKS 51-01 4,558 8.6 58.4 2.3
Sorghum Partners SP 43M80 4,283 8.6 58.8 3.8
Sorghum Partners SP 68M57 3,593 9.0 61.8 4.5
Dyna-Gro M62GB77 3,369 9.1 62.0 6.5
Dyna-Gro M69GB38 3,795 8.5 59.0 2.8
Dyna-Gro M69GR88 5,415 8.5 58.6 1.5
Advanta ADV XG141 1,875 8.5 60.9 8.5
Advanta ADV XG251 5,264 8.6 58.8 2.0
Advanta ADV XG255 3,094 8.4 57.1 4.8
Advanta ADV XG256 2,428 9.3 60.2 8.5
Advanta ADV XG9127 3,135 8.6 59.8 5.8
Advanta ADV X397 3,964 8.9 60.7 5.0
Advanta ADV XG885 4,310 8.9 59.9 3.0
Advanta ADV G2106 2,434 8.6 57.5 7.8
Alta Grain AG 1203 4,316 8.7 58.5 4.3
Dyna-Gro GX17973 3,684 8.8 59.9 1.0
           
Average   3,832 9.0 60 5.0
CV (%)   13.4      
LSD (0.05)   1014      

 

Table 4. Late hybrids from the Oklahoma Grain Sorghum Hybrid Tests located at Chickasha. 

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Lodging Rating 1-10 scale
Sorghum Partners SP 73B12 3,830 8.6 58.4 2.0
Sorghum Partners SP 74M21 5,150 8.6 58.0 3.8
Sorghum partners SP 74C40 4,588 8.7 58.7 2.3
Dyna-Gro GX18395 3,741 8.4 58.4 8.0
Dyna-Gro GX18991 4,635 9.0 61.6 4.3
Dyna-Gro GX19981 3,355 8.8 61.0 5.5
Dyna-Gro M74GB17 3,965 8.7 60.5 6.5
Advanta ADV XG224 2,384 8.6 59.9 6.5
Advanta ADV XG093 3,590 8.7 60.6 5.8
 Advanta ADV G3247  2,727  8.1 61.6  8.3
           
Average   3,796 9.0 60.0 5.0
CV (%)   12.5      
LSD (0.05)   975      

Cooperator: Michael Pettijohn
Tillage Practice: Conventional
Soil Series: Dale Silt Loam
Seeding rate: 55,200 seeds/ac
Herbicide: 2.7 qt/ac Lumax EZ + 1 qt glyphosate/ac
Fertilizer: N- 150 lbs/ac, P- 87 lbs/ac, K- 40 lbs/ac, S- 10 lbs/ac
Starter Fertilizer: 5 gallons of 10-34-0 applied at planting
Planting Date: April 22, 2019
Harvest Date: August 23, 2019

 

Homestead

 

Table 5. Early hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Homestead.

Company Cultivar Grain yield lbs/ac
Harvest Moisture %
Test Weight lbs/bu Plant population plants/ac Head Count Heads/plant
Richardson Seed RS124 4,717 9.1 57.9 36,750 1.6
Richardson Seed RS230 4,956 9.2 58.0 24,750 2.4
Richardson Seed RS320W 5,499 9.3 56.8 29,250 1.6
Sorghum Partners SP 31A15  4,660 8.6 59.7  30,750 1.7
Dyna-Gro M60GB31 5,372 8.9 57.3 34,750 1.6
 Dyna-Gro  M60GB88 5,887 8.8 55.2  31,250 1.5
Advanta ADV G1329 4,873 8.9 54.3 34,000 1.3
Alta Grain AG 1201 4,956 8.8 57.1 35,000 1.4
             
Average   5,115 9.0 57 32,063 2
CV (%)   8.4        
LSD (0.05)   529        

 

Table 6. Medium hybrids from the Oklahoma Grain Sorghum Hybrid tests located at Homestead.

Company Cultivar Grain yield lbs/ac
Harvest Moisture %
Test Weight lbs/bu
Plant population plants/ac Head Count Heads/plant
Advanta ADV G2275 6,034  9.3  58.8  31,250  1.7
Advanta ADV XG390IG 4,709  9.0  57.9  27,750  2.0
Advanta ADV XG009IG 4,866  8.9  58.3  28,250  1.9
Richardson Seed RS260E 5,100  9.3  58.3  29,000  1.8
Dekalb DKS 33-07 5,097  9.3  59.4  34,250  1.3
Dekalb DKS 37-07 5,279  9.4  57.7  31,750  1.5
Dekalb DKS 46-60 6,279  9.2  59.3  30,000  1.6
Dekalb DKS 47-07 6,119  9.0  57.2  29,500  2.1
Dekalb DKS 51-01 5,667  9.1  58.0  36,000  1.5
Sorghum Partners SP 43M80 5,994  9.3  57.3  33,250  1.6
Sorghum Partners SP 68M57 5,173  7.3  57.1  28,250  1.8
Dyna-Gro M62GB77 5,581  9.3  58.3  31,750  1.4
Dyna-Gro M69GB38 6,302  9.2  59.6  28,500  1.7
Dyna-Gro M69GR88 5,651  8.9  57.9  29,500  1.8
Advanta ADV XG141 4,731  9.2  59.3  34,500  1.2
Advanta ADV XG251 5,700  9.0  57.1  29,750  1.6
Advanta ADV XG255 5,225  8.8  56.2  28,500  1.9
Advanta ADV XG256 4,866  9.3  57.3  30,750  1.5
Advanta ADV XG9127 4,785  9.1  59.3  28,750  1.6
Advanta ADV X397 5,541  9.3  50.7  26,250  1.8
Advanta ADV XG885 6,024  9.1  57.9  28,750  1.8
Advanta ADV G2106 4,601  9.0  56.1  26,250  2.1
Alta Grain AG 1203 5,629  9.1  56.4  26,750  2.2
Dyna-Gro GX17973 5,946  9.2  58.8  32,250  1.7
             
Average   5,454  958 30,063 2  
CV (%)   9.8        
LSD 0.05   633        

 

Table 7. Late hybrids from Oklahoma Grain Sorghum Hybrid Test located at Homestead.

Company Cultivar Grain yield lbs/ac
Harvest Moisture %
Test Weight lbs/bu
Plant population plants/ac Head Count Heads/plant
Sorghum Partners SP 73B12 4,996 9.3 55.8 33,000 1.6
Sorghum Partners SP 74M21 5,936 9.3 58.6 29,250 1.9
Sorghum Partners SP 74C40 5,409 9.4 58.9 31,250 1.6
Dyna-Gro GX18395 5,074 9.1 57.2 32,000 1.3
Dyna-Go GX18991 5,408 9.3 58.3 28,250 2.1
Dyna-Gro GX19981 5,746 9.3 59.0 31,500 1.8
Dyna-Gro M74GB17 6,189 9.2 59.4 28,500 1.7
Advanta ADV XG224 5,454 9.1 59.2 26,000 2.3
Advanta ADV XG093 5,059 9.5 58.6 34,500 1.4
 Advanta ADV G3247  5,258  9.1  59.7  27,750 2.2
             
 Average   5,453  9  58  30,200 2
CV (%)   7.3        
LSD 0.05   425        

Cooperator: Brook Strader
Tillage Practice: No-till into failed soybean crop with a wheat cover crop

Soil Series: Canadian Fine Sandy Loam

Seeding rate: 55,200 seeds/ac

Herbicide: Atrazine4L 2pt/ac + 1.3 pt/ac Dual

Fertilizer: N- 95 lbs/ac, P- 0, K- 0

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: April 16, 2019

Harvest Date: September 12, 2019

 

Lahoma

 

Table 8. Early hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Lahoma.

Company Cultivar Grain yield lbs/ac Test Weight lbs/bu Harvest Moisture % Plant Population plants/ac Head Count heads/plant
Richardson Seed RS124 4,541 57.5 9.3 31,250 1.7
Richardson Seed RS230 4,779 58.1 9.4 21,250 2.6
Richardson Seed RS320W 5,439 56.9 8.8 22,500 2.2
Sorghum Partners SP 31A15 4,325 56.3 9.0 28,750 1.8
Dyna-Gro M60GB31 4,656 58.3 9.3 30,000 1.6
Dyna-Gro M60GB88 5,139 57.5  9.1 29,500 1.9
Advanta ADV G1329 2,877 56.7 6.0 31,250 2.1
Alta Grain AG 1201 5,209 56.3 9.1 30,250 1.7
             
Average   4,621 57 9 28,094 2
CV (%)   17.2        
LSD 0.05   724        

 

Table 9. Medium hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Lahoma.

Company Cultivar Grain yield lbs/ac Test Weight lbs/bu Harvest Moisture % Plant Population plant/ac Head Count heads/plant
Advanta ADV G2275 4,600 59.4 9.6 29,750 1.8
Advanta ADV XG390IG 5,283 59.2 9.3 21,000 2.7
Advanta ADV XG009IG 4,648 59.3 9.2 22,500 2.5
Richardson Seed RS260E 5,793 60.0 9.3 26,250 2.3
Dekalb DKS 33-07 4,991 58.5 9.3 30,750 1.8
Dekalb DKS 37-07 4,948 60.1 9.4 27,750 2.3
Dekalb DKS 46-60 6,615 59.1 9.3 28,500 2.4
Dekalb DKS 47-07 5,847 57.5 9.0 26,500 2.1
Dekalb DKS 51-01 5,813 59.2 9.4 28,750 2.0
Sorghum Partners SP 43M80 5,301 58.9 9.4 29,500 1.8
Sorghum Partners SP 68M57 4,495 58.5 9.3 26,250 2.2
Dyna-Gro M62GB77 6,560 59.7 9.3 30,500 1.7
Dyna-Gro M69GB38 5,453 58.3 9.3 29,750 1.9
Dyna-Gro M69GR88 5,653 59.1 9.5 27,500 2.1
Advanta ADV XG141 5,175 58.9 9.2 30,250 1.6
Advanta ADV XG251 5,528 59.5 9.4 28,500 1.9
Advanta ADV XG255 5,204 58.8 9.1 27,750 2.0
Advanta ADV XG256 6,276 59.0 9.3 26,500 2.1
Advanta ADV XG9127 4,859 58.1 9.2 26,000 2.2
Advanta ADV X397 4,644 59.2 9.5 28,250 1.8
Advanta ADV XG885 5,324 58.5 9.5 30,250 1.6
Advanta ADVG2106 5,319 57.7 9.2 26,250 2.3
Alta Grain AG 1203 5,519 56.1 8.8 25,750 2.6
Dyna-Gro GX17973 5,397 57.6 9.2 30,500 1.8
             
Average   5,385 59 9 27,719 2
CV (%)   10.7        
LSD 0.05   603        

 

Table 10. Late hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Lahoma.

Company Cultivar Grain yield lbs/bu Test Weight lbs/bu Harvest Moisture % Plant Population plants/ac Head County heads/plant
Sorghum Partners SP 73B12 4,963 59.5 9.5 29,500 1.7
Sorghum Partners SP 74M21 5,671 57.4 9.3 28,750 2.0
Sorghum Partners SP 74C40 5,448 58.2 9.4 29,500 1.8
Dyna-Gro GX18395 5,849 59.7 9.3 30,250 1.5
Dyna-Gro GX18991 6,472 60.9 9.5 27,250 2.1
Dyna-Gro GX19981 6,393 60.2 9.4 29,500 2.0
Dyna-Gro M74GB17 5,812 57.2 9.2 24,250 2.4
Advanta ADV XG224 5,051 59.6 9.3 26,500 2.2
Advanta ADV XG093 4,949 59.4 9.6 30,500 1.8
Advanta ADV G3247 6,360 58.5 9.1 27,750 1.9
             
Average   5,697 59 9 28,375 2
CV (%)   10.4        
LSD 0.05   607        

Cooperator: Erich Wehrenberg
Tillage Practice: No-till

Soil Series: Grant Silt Loam

Seeding rate: 55,200 seeds/ac

Herbicide: Atrazine4L 2pt/ac + 1.3 pt/ac Dual

Fertilizer: N- 120 lbs/ac, P- 60 lbs/ac, K- 40 lbs/ac, S- 10lbs/ac, Lime- 2tons/ac

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: April 16, 2019

Harvest Date: September 11, 2019

 

Tipton

 

Table 11. Early hybrids from the Oklahoma Grain Sorghum Hybrid Tests located at Tipton.

Company Cultivar Grain yield lbs/ac Harvest Moisture Test Weight lbs/bu Plant Population plants/ac
Richardson Seed RS 124 4,303 8.2 55.0 31,750
Richardson Seed RS 230 4,671 8.9 57.4 21,750
Richardson Seed RS 320W 4,986 9.0 56.7 25,250
Sorghum Partners SP 31A15 4,848 8.3 54.1 28,750
Dyna-Gro M60GB31 6,014 9.0 56.5 27,750
Dyna-Gro M60GB88 5,641 8.8 56.2 29,250
Advanta ADV G1329 4,746 8.8 55.9 30,250
Alta Grain AG 1201 5,088 8.5 55.1 32,000
           
Average   5,037 9 56 28,344
CV (%)   10.9      
LSD 0.05   607      

 

Table 12. Medium hybrids from the Oklahoma Grain Sorghum Hybrid Tests located at Tipton.

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Plant Population plants/ac
Advanta ADV G2275 6,564 9.3 58.6 28,500
Advanta ADV XG390IG 4,501 7.1 4.52 15,000
Advanta ADV XG009IG 4,648 9.2 58.9 19,750
Richardson Seed RS260E 5,644 9.2 59.7 14,500
Dekalb DKS 33-07 6,040 9.2 57.8 30,000
Dekalb DKS 37-07 5,136 9.2 59.3 25,250
Dekalb DKS 46-60 7,158 9.2 58.3 25,500
Dekalb DKS 47-07 6,688 8.9 58.1 24,000
Dekalb DKS 51-01 6,258 9.0 58.0 31,250
Sorghum Partners SP 43M80 6,513 9.2 58.5 29,250
Sorghum Partners SP 68M57 5,316 9.1 57.7 21,000
Dyna-Gro M62GB77 5,376 9.2 60.5 28,750
Dyna-Gro M69GB38 5,355 9.1 58.2 21,750
Dyna-Gro M69GR88 5,894 9.1 57.8 23,000
Advanta ADV XG141 4,216 6.8 43.0 29,250
Advanta ADV XG251 5,955 9.2 58.4 27,750
Advanta ADV XG255 5,063 6.7 42.5 21,750
Advanta ADV XG256 5,089 9.2 58.2 24,500
Advanta ADV XG9127 4,194 8.9 57.5 24,000
Advanta ADV X397 4,868 9.3 58.9 21,500
Advanta ADV XG885 5,650 9.2 7.7 23,000
Advanta ADV G2106 4,318 9.3 60.0 16,250
Alta Grain AG 1203 4,969 8.9 57.3 21,250
Dyna-Gro GX17973 4,768 9.1 58.3 27,250
           
Average   5,424 9 57 23,917
CV (%)   15.2      
LSD 0.05   884      

 

Table 13. Late hybrid from the Oklahoma Grain Sorghum Hybrid Test located at Tipton.

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Plants Population plants/ac
Sorghum Partners SP 73B12 5,528 9.3 57.3 27,250
Sorghum Partners SP 74M21 5,406 9.3 57.8 24,750
Sorghum Partners SP 74C40 5,100 9.6 58.3 26,000
Dyna-Gro GX18395 4,701 9.1 58.1 28,000
Dyna-Gro GX18991 6,489 9.3 61.0 23,000
Dyna-Gro GX19981 5,830 9.2 59.6 27,500
Dyna-Gro M74GB17 4,844 9.4 60.5 19,750
Advanta ADV XG224 3,904 9.1 59.0 17,250
Advanta ADV XG093 6,319 9.3 57.5 29,750
Advanta ADV G3247 4,560 6.6 43.3 25,250
           
Average   5,268 9 57 24,850
CV (%)   15.4      
LSD 0.05   876      

Cooperator: Mike Schultz and Gary Strickland
Tillage Practice: Conventionally tilled

Soil Series: Tipton Loam

Seeding rate: 55,200 seeds/ac

Herbicide: Atrazine4L 2pt/ac + 1.3 pt/ac Dual

Fertilizer: N- 143 lbs/ac, P- 60 lbs/ac, K- 60

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: March 27, 2019

Harvest Date: August 29, 2019

 

Panhandle Trials: Adams

 

Table 14. Early hybrids from the Oklahoma Grain Sorghum Hybrid Tests located at Adams.

Company Cultivar Grain yield lbs/ac Grain Moisture % Test Weight lbs/bu Plant Population plants/ac Head Count heads/plant
Richardson Seed RS124 2,244 7.7 53.8 19,500 1.7
Richardson Seed RS230 3,115 8.0 54.5 18,250 1.4
Richardson Seed RS320W 2,101 8.1 55.8 23,500 1.1
Sorghum Partners SP 31A15 2,277 6.9 53.3 21,500 1.3
Dyna-Gro M60GB31 3,017 8.4 54.2 23,750 1.5
Dyna-Gro M60GB88 2,828 7.3 53.7 24,500 1.4
Advanta ADV G1329 2,595 7.9 53.9 24,750 1.3
Alta Grain AG 1201 3,177 8.2 56.1 23,500 1.5
             
Average   2,669 8 54 22,406 1
CV (%)   15.9        
LSD 0.05   524        

 

Table 15. Medium hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Adams.

Company Cultivar Grain yield lbs/ac Grain Moisture % Test Weight lbs/bu Plant Population plants/ac Head Count heads plant-1
Advanta ADV G2275 1,679 7.5 53.3 22,500 1.5
Richardson Seed RS260E 2,344 7.1 53.2 22,750 1.4
Dekalb DKS 33-07 2,411 6.3 49.1 20,500 1.6
Dekalb DKS 37-07 2,509 8.5 59.2 18,750 1.8
Dekalb DKS 46-60 2,585 7.5 53.1 16,500 1.7
Dekalb DKS 47-07 1,918 8.3 58.1 20,750 1.5
Dekalb DKS 51-01 1,731 7.8 55.6 22,250 1.1
Sorghum Partners SP 43M80 2,296 6.4 52.7 18,000 1.6
Sorghum Partners SP 68M57 2,271 7.7 55.4 21,250 1.6
Dyna-Gro M62GB77 1,975 7.5 54.7 22,500 1.7
Dyna-Gro M69GB38 2,821 7.8 55.3 17,750 1.8
Dyna-Gro M69GR88 2,450 7.2 52.7 15,500 1.7
Advanta ADV XG141 1,937 7.0 54.6 21,250 1.4
Advanta ADV XG251 2,143 7.7 52.0 20,500 1.5
Advanta ADV XG255 2,753 7.6 54.9 17,500 1.8
Advanta ADV XG256 2,051 7.4 52.9 20,750 1.7
Advanta ADV XG9127 1,659 7.4 53.1 17,750 1.5
Advanta ADV X397 2,519 8.0 57.2 18,500 1.7
Advanta ADV XG885 617 7.8 53.5 22,250 1.3
Advanta ADV G2106 2,183 7.5 53.4 17,250 1.9
Alta Grain AG 1203 2,829 7.5 53.0 25,500 1.3
Dyna-Gro GX 17973 2,669 7.7 53.6 23,750 1.1
             
Average   2,198 8 54 20,182 2
CV (%)   16.8        
LSD 0.05   374        

 

Table 16. Late hybrids from the Oklahoma Grain Sorghum Hybrid Test located at Adams.

Company Cultivar Grain yield lbs/ac Grain Moisture % Test Weight lbs/bu Plant Population plants/ac Head Count heads/plant
Sorghum Partners SP 73B12 1,944 7.2 53.7 18,500 1.4
Sorghum Partners SP 74M21 1,902 6.9 52.5 21,750 1.2
Sorghum Partners SP 74C40 2,249 7.8 51.7 23,250 1.1
Dyna-Gro GX18395 2,159 6.7 50.5 20,250 1..3
Dyna-Gro GX18991 2,771 8.4 56.6 21,750 1.3
Dyna-Gro GX19981 2,789 8.1 57.2 20,500 1.5
Dyna-Gro M74GB17 1,923 7.3 51.4 24,500 1.3
Advanta ADV XG224 1,891 7.6 50.5 21,250 1.7
Advanta ADV XG093 2,759 8.1 55.0 25,000 1.4
Advanta ADVG3247 2,449 8.2 57.6 24,500 1.4
             
Average   2,283 8 54 22,125 1
CV (%)   14.7        
LSD 0.05   385        

Cooperator: Leon Richard

Tillage Practice: Conventional Till

Soil Series: Dalhart Fine Sandy Loam

Seeding rate: 44,300 seeds/ac

Herbicide: Cinch ATZ Lite 2qts/ac + 1 qt/ac Glyphosate + 2 oz/ac Huskie

Fertilizer: N- 80 lbs N/ac

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: June 7, 2019

Harvest Date: October 18, 2019

 

Keyes

 

Table 17. Early hybrids from the Oklahoma Sorghum Hybrid Test located at Keyes.

Company Cultivar Grain yield lbs/ac Harvest Moisture Test Weight lbs/bu Plant Population plants/ac
Richardson Seed RS124 3,207 8.6 56.9 17,750
Richardson Seed RS230 2,974 8.8 57.9 17,000
Richardson Seed RS320W 3,238 8.6 57.3 26,500
Sorghum Partners SP 31A15 3,433 8.3 55.8 24,250
Dyna-Gro M60GB31 3,236 9.1 57.7 24,250
Dyna-Gro M60GB88 3,232 8.5 56.7 26,500
Advanta ADV G1329 3,316 8.5 56.9 25,000
Alta Grain AG 1201 3,514 8.5 56.3 26,500
           
Average   3,269 9 57 23,469
CV (%)   4.9      
LSD 0.05   227      

 

Table 18. Medium hybrids from the Oklahoma Sorghum Hybrid Test located at Keyes.

Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Plant Population plants/ac
Advanta ADV G2275 3,203 9.1 57.6 21,250
Richardson Seed RS260E 3,119 8.6 58.6 25,750
Dekalb DKS 33-07 4,029 8.6 56.9 28,000
Dekalb DKS 37-07 3,877 8.5 56.4 19,750
Dekalb DKS 46-60 3,892 8.7 58.2 21,250
Dekalb DKS 47-07 3,756 8.5 55.4 25,750
Dekalb DKS 51-01 3,265 8.4 56.8 27,250
Sorghum Partners SP 43M80 3,833 8.6 56.9 22,750
Sorghum Partners SP 68M57 3,367 8.7 57.8 25,058
Dyna-Gro M62GB77 3,547 8.8 58.0 27,250
Dyna-Gro M69GB38 3,369 8.5 56.0 21,250
Dyna-Gro MG69GR88 3,797 8.6 54.4 18,500
Advanta ADV XG141 2,947 8.3 55.6 24,250
Advanta ADV XG251 . . . .
Advanta ADV XG255 2,727 8.6 54.6 21,500
Advanta ADV 256 3,199 8.5 57.2 25,000
Advanta ADV 9127 3,502 8.5 56.6 21,250
Advanta ADV X397 3,641 8.5 56.8 21,500
Advanta ADV XG885 2,485 8.4 55.6 27,250
Advanta ADV XG2105 3,039 8.5 55.6 15,500
Alta Grain AG 1203 3,219 8.5 55.8 30,750
Dyna-Gro GC17973 3,845 8.4 54.9 27,250
           
Average   3,412 9 56 23,717
CV (%)   12.2      
LSD 0.05   416      

 

Table 19. Late hybrids from the Oklahoma Sorghum Hybrid Test located at Keyes.

Company Cultivat Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu Plant Population plants/ac
Sorghum Partners SP 73B12 3,496 9.1 55.3 24,400
Sorghum Partners SP 74M21 3,268 9.0 56.8 25,500
Sorghum Partners SP 74C40 4,052 9.2 55.5 28,500
Dyna-Gro GX18395 4,043 8.5 55.3 24,250
Dyna-Gro GX18991 4,388 9.1 59.4 23,500
Dyna-Gro GX19981 3,934 9.0 58.3 24,750
Dyna-Gro M74GB17 3,375 9.0 56.5 28,500
Advanta ADV XG224 4,117 9.1 56.7 24,750
Advanta ADV XG093 3,856 9.0 54.9 27,250
Advanta ADV G3247 2,902 9.1 57.2 23,500
           
Average   3,743 9 57 25,490
CV (%)   12.3      
LSD 0.05   493      

Cooperator: Kenneth Rose

Tillage Practice: Conventional Till

Soil Series: Conlen-Dalhart complex

Seeding rate: 44,300 seeds/ac

Herbicide: Cinch ATZ Lite 2 qts/ac + 1 qt/ac Glyphosate + 2oz/ac Huskie

Fertilizer: N- 130 lbs N/ac, P- 40lbs/ac

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: June 6, 2019

Harvest Date: October 17, 2019

 

McCall

 

Table 20. Early hybrids from the Oklahoma Sorghum Hybrid Test located at McCall (Irrigated).

 Company Cultivar Grain yield lbs/ac Harvest Moisture % Test Weight lbs/bu
Richardson Seed RS124 5,535 7.88 56.1
Richardson Seed RS230 6,706 8.02 58.0
Richardson Seed RS320W 6,396 7.94 58.1
Sorghum Partners SP 31A15 7,472 7.24 52.1
Dyna-Gro M60GB31 7,246 8.02 57.4
Dyna-Gro M60GB88 7,514 7.84 56.7
Advanta ADV G1329 6,722 7.46 55.7
Alta Grain AG 1201 5,957 7.5 55.5
         
Average   6,693 8 56
CV (%)   9.4    
LSD (0.05)   923    

 

Table 21. Medium hybrids from the Oklahoma Sorghum Hybrid Test located at McCall (Irrigated).

Company  Cultivar Grain yield lbs/ac
Harvest Moisture
Test Weight lbs/bu
Advanta ADV G2275 7,341 7.98 57.2
Richardson Seed RS260E 6,327 7.92 58.0
Dekalb DKS 33-07 6,487 7.88 57.3
Dekalb DKS 37-07 6,492 8.06 57.4
Dekalb DKS 46-60 7,098 8.06 59.2
Dekalb DKS 47-70 6,946 7.74 55.1
Dekalb DKS 51-01 7,788 7.92 57.0
Sorghum Partners SP 43M80 6,590 7.94 57.8
Sorghum Partners SP 68M57 7,258 7.88 56.0
Dyna-Gro M62GB77 7,017 8.06 58.1
Dyna-Gro M69GB38 6,528 7.64 56.0
Dyna-Gro M69GR88 7,524 7.6 54.5
Advanta ADV XG141 6,012 6.84 52.6
Advanta ADV XG251 7,159 7.66 54.0
Advanta ADV XG255 6,029 7.34 53.4
Advanta ADV XG256 6,620 7.64 57.7
Advanta ADV XG9127 6,563 7.66 54.3
Advanta ADV X397 6,227 7.96 57.1
Advanta ADV XG885 6,336 7.94 57.3
Advanta ADV G2106 7,155 7.64 55.1
Alta Grain AG 1203 7,275 7.48 53.8
Dyna-Gro GX17973 5,912 7.66 56.1
         
Average   6,758 8 56
CV (%)   7.8    
LSD (0.05)   727    

 

Table 22. Late hybrids from the Oklahoma Sorghum Performance Test located at McCall (Irrigated).

 Company  Cultivar Grain yield lbs/ac
Harvest Moisture %
Test Weight lbs/bu
Sorghum Partners SP 73B12 7,099 8.12 56.1
Sorghum Partners SP 74M21 7,303 7.82 54.1
Sorghum Partners SP 74C40 6,879 7.56 52.7
Dyna-Gro GX18395 6,543 7.66 55.7
Dyna-Gro GX18991 6,628 8.16 59.0
Dyna-Gro GX19984 7,200 7.88 57.2
Dyna-Gro M74GB17 5,026 6.96 54.9
Advanta ADV XG093 6,363 7.2 53.3
Advanta ADV XG093 6,701 7.56 54.3
Advanta ADV G3247 6,293 7.1 57.7
         
Average   6,604 8 55
CV (%)   9.8    
LSD (0.05)   702    

Cooperator: Cameron Murley

Tillage Practice: Strip-till into corn residue

Soil Series: Gruver Clay Loam

Seeding rate: 66,7000 seeds/ac

Herbicide: Cinch ATZ Lite 2 qts/ac + 1 qt/ac Glyphosate + 2 oz/ac Huskie

Fertilizer: N- 150 lbs N/ac

Starter Fertilizer: 5 gallons of 10-34-0 applied at planting

Planting Date: June 6, 2019

Harvest Date: October 19, 2019

 

Perkins (Late-Season Planting)

 

Table 23. Late-planted (double-crop) hybrid performance trials evaluate at Perkins in 2019.

Company Cultivar Grain yield lbs/ac Harvest Moisture Test Weight lbs/bu
Alta Grain AG 1201 4,490 10.0 56.3
Sorghum Partners SP 73B12 1,483 13.4 54.3
Dekalb DKS 37-07 2,358 12.3 57.4
Sorghum Partners KS 585 1,520 10.0 56.3
Warner Seed W-844E 5,485 11.5 57.3
Warner Seed W-7051 2,993 13.1 54.3
Dyna-Gro M60GB88 5,602 11.3 54.8
Dyna-Gro M69GB38 5,386 13.4 55.3
Advanta ADV X390 2,185 9.5 52.2
Advanta ADV X009 2,790 12.8 56.9
Dekalb DKS 33-07 1,803 12.0 54.6
Dekalb DKS 46-60 4,985 12.5 56.9

Cooperator: Josh Massey

Tillage Practice: Conventionally tilled

Soil Series: Konawa Fine Sandy Loam

Target Population: 66,700 seeds/ac

Herbicide: Cinch ATZ Lite 2 qts/ac + 1 qt/ac Glyphosate

Fertilizer: N- 150 lbs N/ac

Starter Fertilizer: N/A

Planting Date: July 8, 2019

Harvest Date: October 22, 2019

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