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

Research Report Number 670 January, 2001

Griffin, Georgia: Evaluation of Sorghum Hybrids for Silage, 2000
Company or		Hybrid Name	Forage Yields		Plant	Dry		2-Yr. Avg
Brand Name		or Number	Dry	Green	Height	Matter	IVDMD1	Dry Yield
			--- tons/acre ---		in	%	%	tons/acre
Southern States		SS1515F	13.9	32.3	75.8	43	.	10.2
Southland		Silo Master D	13.4	34.9	110.8	38	.	.
Pennington		Penn Silage II	13.3	33.5	103.3	40	.	10.2
NK		NK300	12.6	33.1	79.5	38	.	.
Southern States		SS-85F	11.2	25.4	85.5	44	.	.
CSC		5828Fbmr	7.2	19.2	87.0	38	.	.
Average			11.92	29.7	90.3	40	.	10.2
LSD at 10% Level			1.7	2.5	6.6	N.S.3		N.S.
Std. Err. of Entry Mean			0.7	1.0	2.6	2		0.8
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 = 11.2% and df for EMS = 15.
3. The F-test indicated no statistical differences at the alpha = 0.1 probability level; therefore a LSD 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:	May 23, 2000.
Harvested:	August 29, 2000.
Seeding Rate:	125,000 seed/acre in 30" rows.
Soil Type:	Appling coarse sandy loam.
Soil Test:	P = Medium, K = High, and pH = 6.4.
Fertilization:	Preplant: 28 lb N, 56 lb P2O5, and 84 lb K2O/acre. Sidedress: 100 lb N/acre.
Previous Crop:	Soybean.
Management:	Moldboard plowed and rototilled; cultivated once for weed control.
Test conducted by P. A. Rose.
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