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

Research Report Number 670 January, 2001

SORGHUM FOR SILAGE
Tifton, 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
NK		SS405	8.7	30.6	113	28	.	9.0
Southern States		SS1515F	8.3	21.7	56	38	.	8.2
Southland		Silo Master D	8.1	24.5	98	33	.	9.2
NK		NK300	7.6	19.6	58	39	.	7.7
NK		KF429	7.6	22.0	96	34	.	7.8
Southern States		SS-85F	7.0	20.2	64	35	.	.
NK		X901	6.9	22.7	60	30	.	6.9
Pennington		Penn Silage II	6.8	26.2	85	26	.	7.8
Southland		Sweet-T	5.9	22.9	113	26	.	.
CSC		5828Fbmr	5.4	15.0	82	36	.	.
Average			7.22	22.5	83	33	.	8.1
LSD at 10% Level			1.1	4.1	5	2		0.6
Std. Err. of Entry Mean			0.5	1.7	2	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 = 13.2% and df for EMS = 27.
Bolding indicates entries yielding equal to highest yielding entry within a column based on Fisher's protected LSD (P = 0.10).
Planted:	April 19, 2000.
Harvested:	August 4, 2000.
Seeding Rate:	100,000 seed/acre in 30" rows.
Soil Type:	Tifton loamy sand.
Soil Test:	P = High, K = Medium, and pH = 6.5.
Fertilization:	Preplant: 54 lb N, 40 lb P2O5, and 60 lb K2O/acre. Sidedress: 56 lb N/acre.
Previous Crop:	Soybean.
Management:	Subsoiled and bedded; rototilled; Aatrex and one cultivation used for weed control; Diazinon used for insect control; Nemacur used for nematode control.
Test conducted by A. E. Coy and M. D. Pippin.
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