Calhoun, Georgia: Evaluation of Corn Hybrids for Silage, 2000, Irrigated

Georgia Agricultural Experiment Stations College of Agricultural and Environmental Sciences The University of Georgia					Research Report Number 668 November, 2000
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Calhoun, Georgia: Evaluation of Corn Hybrids for Silage, 2000, Irrigated
Company or		Hybrid	Maturity	Forage Yield		Dry	Grain	Plant	2-Year Average Dry
Brand Name		Name	Class	Dry	Green	Matter	Portion	Population	Forage Yield
				tons/acre		%	%	no.	tons/acre
Short and Mid-Season

Pioneer		31R88	M	11.7	30.6	38.1	46	28314	.
Zimmerman		1851W	S	10.3	27.7	37.3	47	29040	.
NK		N 8811	M	10.3	31.6	32.7	46	28798	.
Pioneer		32k61	S	10.2	27.6	37.0	47	25410	.
DeKalb		DK 687	M	10.1	28.3	35.6	48	27346	.

Pioneer		33J56	S	9.9	24.5	40.8	51	24926	.
Southern States		SS849CL	M	9.7	23.0	42.3	53	22506	.
Southern States		SS859CL	M	9.6	27.0	35.6	50	24442	.
Southern States		SS897	M	9.3	27.2	34.3	50	29766	.
Pioneer		3154	M	8.4	21.1	40.0	45	26862	.

Average				9.9¹	26.8	37.4	48	26741	.
LSD at 10% Level				1.4	3.1	4.7	3	3825	-
Std. Err. of Entry Mean				0.6	1.3	2.0	1	1588	-

Full-Season

AgraTech		1177	F	12.1	25.8	47.7	45	23820	.
Southland Genetic		SG1877	F	11.5	26.5	43.1	42	28768	.
Pioneer		30F33	F	9.8	23.3	42.1	41	26620	.
NK		N91-R9	F	9.8	23.0	42.8	47	27369	.
Southern States		SS1150	F	9.6	25.7	37.2	44	26548	.

NK		McNair 508	F	9.3	23.0	41.7	44	27104	.
Greenwood		835	F	7.5	16.8	44.9	42	25409	.

Average				9.9²	23.4	42.8	43	26520	.
LSD at 10% Level				2.1	4.1	N.S.³	3	1882	-
Std. Err. of Entry Mean				0.8	1.7	3.1	1	767	-

1. CV = 11.4%, and df for EMS = 27.
2. CV = 17.3%, and df for EMS = 18.
3. The F-test indicated no statistical differences at the alpha = .10 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 11, 2000.
Harvested:	August 22, 2000.
Seeding Rate:	31,000 seeds/acre in 30" rows.
Soil Type:	Rome gravelly clay loam.
Soil Test:	P = High, K = Medium, and pH = 6.2.
Fertilization:	68 lb N, 90 lb P₂O₅, and 180 lb K₂O/acre as preplant; 150 lb N/acre as sidedress.
Previous Crop:	Soybean.
Management:	Moldboard plowed and rototilled; Aatrex and Lasso used for weed control; irrigated 10.0 inches.

Test conducted by P. A. Rose, G. Rawls, and J. Stubbs.
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