The Georgia Agricultural Experiment Stations
College of Agricultural and Environmental Sciences
The University of Georgia

Research Report Number 658
February 1999


SUMMER ANNUAL FORAGES
 
Tifton, Georgia:
Evaluation of Summer Annual Forage, 1998 and Two-Year Average Yields, 1997-1998

                                 Dry Forage Yields                            
Company or
Brand Name
Hybrid Name
or Number
                    Clipping Dates                    Season
Total
2-Year
Average
7/1/98 8/7/98 9/9/98    

  --------------- dry matter yield - pounds per acre ---------------
Sorghum x Sudangrass
 
Seed Resource S-84-2 9535 6996 4858     21389 .
Seed Resource F-97-2 9179 7423 4015     20617 .
Seed Resource S-96-3 8601 5806 4218     18625 .
Production-Plus Nutri+PlusBMR 10913 4046 2943     17903 13969
Seed Resource S-96-2 8605 5025 3316     16946 .
 
Southland Sweeter-N-Honey 9121 4404 3090     16616 15059
DeKalb Sudax SX-15 8555 4465 3298     16318 14244
Pennington Summergrazer III 8693 4482 3008     16182 14538
Seed Resource Green Grazer V 8807 4444 2733     15984 14150
Cargill X18347 8286 4566 2960     15813 .
 
DeKalb Sudax SX-17 8452 4465 2780     15697 14362
NK Sordan 79 8279 4780 2450     15509 14341
Southland Honey Pasture 7724 4097 2881     14702 14373
NK Trudan 10 8153 3725 2363     14242 13530
Pennington Summergrazer EM 7668 3469 2533     13670 13382
 
Average 8705 4813 3163     166811 14195
LSD at 10% Level 1158 1232 784     2503 N.S.2
Std. Err. of Entry Mean 487 518 330     1052 696
 
Millet 6/12/98 7/9/98 7/31/98 8/21/98 9/16/98    
 
Ga CPES Tifleaf 3 4036 3202 2897 1775 1065 12976 11750
Ga CPES Tifleaf 2 3980 3082 2874 2096 835 12867 11638
Production-Plus PP202 4405 3139 2558 1724 1022 12848 .
CSC Elite III 4287 3513 2493 1751 664 12708 .
GoldKist 610M 3847 3297 2438 2131 817 12530 12269
 
Ga CPES Tif Exp 5 4660 2550 2784 1760 756 12510 11737
GoldKist GK 600 4913 2512 2471 1821 520 12237 .
GoldKist 630M 4298 2703 2638 1409 1140 12188 11656
Seed Resource M-97-1 3099 3656 2834 1682 884 12155 .
Ga CPES Tif Exp 4 4154 2650 2652 1625 915 11996 11505
 
Seed Resource M-95-1 2653 3678 1977 1533 573 10413 .
Pennington Pennleaf 3119 2647 2366 1601 569 10302 10733
Southland Graze King 4429 2221 1721 1010 561 9943 10604
Production-Plus PP102 4184 2606 1670 946 500 9907 .
 
Average 4005 2961 2455 1633 773 118273 11487
LSD at 10% Level 895 N.S. 337 571 N.S. 1617 -
Std. Err. of Entry Mean 376 368 142 240 195 678 -

1.   CV = 12.6% and df for EMS = 42.
2.   The F-test indicated no statistical differences at the alpha = .10 probability level; therefore, an LSD value
      was not calculated.
3.   CV = 19.5% and df for EMS = 36.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's
protected LSD (P - 0.10).
Planted: April 21, 1998.
Seeding Rate: Sorghum x Sudangrass - 100,000 seed/acre in 30" rows.
Millet - 4 lbs seed/acre in 30" rows.
Soil Type: Tifton loamy sand.
Soil Test: P = Medium, K = Medium, and pH = 5.7.
Fertilization: Preplant: 30 lb N, 60 lb P2O5, and 90 lb K2O/acre.
Sidedress: 60 lb N/acre after each harvest except 9/16/98.
Previous Crop: Soybean.
Management: Chisel plowed and rototilled; Atrazine and two cultivations used for weed control.
 
Test conducted by A. E. Coy and M. Pippin.


Griffin, Georgia:
Evaluation of Summer Annual Forage, 1998 and Two-Year Average Yields, 1997-1998

                               Dry Forage Yields                            
Company or
Brand Name
Hybrid Name
or Number
              Clipping Dates               Season
Total
2-Year
Average
7/29/98 9/15/98 11/11/98

  --------------- dry matter yield - pounds per acre ---------------
Sorghum x Sudangrass
 
Seed Resource S-84-2 5992 7716 2883 16591 .
Seed Resource S-96-3 4664 7436 3509 15609 .
Seed Resource S-96-2 5677 7554 1978 15209 .
Seed Resource Green Grazer V 5223 7711 1376 14310 .
DeKalb Sudax SX-15 4779 6670 1910 13359 14115
 
DeKalb Sudax SX-17 5352 6318 1573 13243 13313
Pennington Summergrazer EM 4654 5240 1423 11317 12671
Pennington Summergrazer III 4608 5282 1398 11288 12652
Southland Honey Pasture 3731 5275 2262 11268 .
Production-Plus Nutri+PlusBMR 3623 4785 1612 10020 9719
 
Southland Sweeter-N-Honey 4281 4687 827 9795 11537
Seed Resource F-97-2 1903 3570 877 6349 .
 
Average 4541 6020 1802 123631 12334
LSD at 10% Level 1157 1348 720 2375 -
Std. Err. of Entry Mean 483 563 301 992 -
 
Millet   7/29/98 9/15/98      
 
Seed Resource M-95-1 5655 3820   9475 .
Seed Resource M-97-1 3668 4482   8149 .
Ga CPES Tifleaf 2 3267 3385   6652 7825
Production-Plus PP102 3913 2488   6401 .
Ga CPES Tifleaf 3 2958 3353   6311 7581
 
Pennington Pennleaf 2715 3466   6181 7260
Production-Plus PP202 3115 3035   6150 .
Ga CPES Tif Exp 5 2604 3535   6140 7413
Ga CPES Tif Exp 4 1809 3909   5718 8517
Southland Graze King 3699 2007   5706 7574
 
Average 3340 3348   66882 7695
LSD at 10% Level 1234 965   1398 -
Std. Err. of Entry Mean 516 404   584 -

1.   CV = 16.0% and df for EMS = 33.
2.   CV = 19.5% and df for EMS = 36.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's
protected LSD (P - 0.10).
Planted: May 26, 1998.
Seeding Rate: Sorghum x Sudangrass - 100,000 seed/acre in 30" rows.
Millet - 4 lbs seed/acre in 30" rows.
Soil Type: Cecil sandy clay loam.
Soil Test: P = Medium, K = Medium, and pH = 6.4.
Fertilization: Preplant: 28 lb N, 56 lb P2O5, and 84 lb K2O/acre.
Sidedress: 150 lb N/acre.
Previous Crop: Soybean.
Management: Moldboard plowed and rototilled; cultivated twice for weed control.
 
Test conducted by J. L. Day.


Sources of Seed for the 1998 Grain Sorghum,
Silage Sorghum, and Summer Annual Forage Tests

Brand or Variety Name               Company and Address

Cargill Cargill Hybrid Seeds, RR 2 Box 82, Lockney, TX 79241.
CSC -Crosbyton Crosbyton Seed Company, 306 E. Main St., P.O. Box 429, Crosbyton, TX 79322.
DeKalb (Grain) DeKalb Genetics Corporation, Route 2, Box 373, Bishop, TX 78343.
DeKalb (Forage) DeKalb Genetics Corporation, Route 2, Box 60, Lubbock, TX 79415.
Ga CPES The University of Georgia, Coastal Plain Experiment Station, P.O. Box 748, Tifton, GA 31793-0748.
GoldKist Gold Kist Seed Division, P.O. Box 705, Dublin, GA 31021.
NK Novartis Seeds, Inc., P.O. Box 249, Grifton, NC 28530.
Pennington Pennington Seed Inc., P.O. Box 290, Madison, GA 30650.
Pioneer Pioneer Hi-Bred International, Inc., 6767 Old Madison Pike, Suite 110, Huntsville, AL 35806.
Production-Plus Production Plus+, Box 1106, Plainview, TX 79072.
Seed Resource Seed Resource, Inc., P.O. Box 326, 1401 NW 6th, Tulia, TX 79088.
Southland Southland Seed Company, Inc., Rt. #10, 404 Holly Drive, Dublin, GA 31021.



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