1998 Sorghum for Silage

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

Research Report Number 658
February 1999

SORGHUM FOR SILAGE

Tifton, Georgia: Evaluation of Sorghum Hybrids for Silage, 1998

Company or Brand Name	Hybrid Name or Number	Forage Yields		Plant Height	Dry Matter	IVDMD¹	2-Yr. Avg Dry Yield
Company or Brand Name	Hybrid Name or Number	Dry	Green	Plant Height	Dry Matter	IVDMD¹	2-Yr. Avg Dry Yield

		tons/acre		in	%	%	tons/acre

NK	SS405	9.5	33.2	145.0	29	60.0	.
Pennington	Penn Silage II	8.9	33.7	120.8	26	62.6	7.0
Cargill	X24442	8.4	28.3	95.5	29	63.1	.
Seed Resource	F-87-2	8.2	32.4	124.5	25	63.8	.
Cargill	FS466	8.0	29.8	103.0	27	63.7	6.7

Southland	Silo Master D	8.0	27.4	116.0	29	60.8	6.6
Cargill	X43024	7.8	27.5	82.0	28	61.5	.
Production-Plus	Silobuster	7.4	28.1	116.5	26	64.3	.
DeKalb	FS22	7.2	25.9	80.0	28	62.1	.
NK	NK300	6.8	20.9	70.0	33	62.3	5.9

NK	X901	6.6	24.3	74.0	27	63.8	6.0
CSC	8528bmr	5.5	18.0	94.0	30	65.2	.
Cargill	XBMR	5.3	16.9	91.0	31	62.1	.
Seed Resource	F-97-1	3.8	14.1	99.5	27	62.6	.

Average		7.2²	25.7	100.8	28	62.7	6.4
LSD at 10% Level		1.1	4.0	7.3	2	2.5	N.S.³
Std. Err. of Entry Mean		0.5	1.7	3.1	1	1.1	0.4

1. IVDMD (in vitro dry matter disappearance) is an indicator of quality and is positively related to animal digestibility (higher values indicate higher digestibility). Samples used for IVDMD determination were collected for all entries of a replicated trial at the same state of reproductive development (soft dough).
2. CV = 13.1% and df for EMS = 39.
3. The F-test indicated no statistical differences at the alpha = 0.1 probability level; therefore, an LSD value was not calculated.
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.
Harvested:	August 3, 1998.
Seeding Rate:	100,000 seed/acre in 30" rows.
Soil Type:	Tifton loamy sand.
Soil Test:	P = High, K = Medium, pH = 6.0.
Fertilization:	Preplant: 30 lb N, 60 lb P₂O₅, and 90 lb K₂O/acre. Sidedress: 93 lb N and 16 lb S/acre.
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 Sorghum Hybrids for Silage, 1998


	Sorghum hybrids for silage at this location were planted on May 25, 1998 and replanted on June 19, 1998. Adequate stands were not obtained from either planting date, therefore no data will be available for the 1998 growing season.

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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