The Georgia Agricultural Experiment Stations College of Agricultural and Environmental Sciences The University of Georgia									Research Report Number 691 December 2003
									Table of Contents
Tifton, Georgia: Early-Planted Sorghum Hybrids for Silage, 2003, Irrigated
			6-17-03 Harvest*					9-02-03 Harvest
Company or		Hybrid Name	Forage Yields		Plant	Dry		Forage Yields		Plant	Dry
Brand Name		or Number	Dry	Green	Height	Matter		Dry	Green	Height	Matter
			--- tons/acre ---		in	%		--- tons/acre ---		in	%
NK		SS506	3.6	28.8	88	13		5.3	26.6	.	20
Southern States		SS1515F	3.5	23.1	63	15		6.9	29.7	.	23
Seed Resource		FS575	3.4	26.3	82	13		4.5	21.0	.	22
NK		1990	3.2	22.1	72	14		2.7	13.9	.	19
Moss		4Ever Green	3.2	23.3	84	14		5.7	24.5	.	24
SS		SS-85F	3.0	21.3	70	14		5.4	23.7	.	23
Seed Resource		FS555	2.9	21.8	80	13		5.7	27.4	.	21
Moss		4Ever Green BMR	2.9	22.1	71	13		3.1	15.3	.	20
NK		NK300	2.8	19.2	59	15		5.3	23.4	.	23
Pennington		352/40	2.8	20.8	84	14		6.1	25.8	.	24
NK		SS405	2.8	21.6	84	13		4.6	21.8	.	21
Moss		Millennium BMR	2.6	17.9	76	15		2.8	12.0	.	24
Pennington		Penn02BMR	2.4	16.7	64	14		2.9	12.3	.	23
Average			3.0 1	21.9	75	14		4.7 2	21.3	.	22
LSD at 10% Level			0.6	4.5	5	1		0.7	3.7		1
Std. Err. of Entry Mean			0.3	1.9	2	1		0.3	1.5		1
*NOTE:  On June 15 this experiment site received severe straight-line winds and rain causing 100% lodging of the sorghum silage plants that were in the "boot" stage of growth.  There was no indication that the completely lodged
plants would recover.  The decision was made to immediately harvest the plots (6-17-03 harvest) and make a second harvest of the regrowth or "ratoon" crop (9-02-03 harvest).
1.  CV = 16.9% and df for EMS = 36.
2.  CV = 13.2% 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 28, 2003.
Harvested:	June 17, 2003 and September 2, 2003 (see note above).
Seeding Rate:	150,000 seed/acre in 30" rows.
Soil Type:	Tifton loamy sand.
Soil Test:	P = High, K = Medium, and pH = 5.9.
Fertilization:	Preplant:  40 lb N, 80 lb P2O5, and 120 lb K2O/acre.  Sidedress:  60 lb N/acre after 1st harvest.
Previous Crop:	Winter forage.
Management:	Paraplowed, subsoiled and bedded, rototilled; Atrazine, Basagran, and two cultivations used for weed control; Telone II used for nematode control; irrigated 0 inches.
Test conducted by A. E. Coy, M. D. Pippin, R. Brooke, R. Burton, and T. Harsey.