The Georgia Agricultural Experiment Stations College of Agricultural and Environmental Sciences The University of Georgia										2003 Corn Performance Tests Research Report Number 690 October 2003
											Table of Contents
Tifton, Georgia: Mid and Full-Season Corn Hybrid Performance, 2003, Irrigated
			Yield1
Company or Brand Name		Hybrid Name	2003	3-Year Avg		Ears/100 Plants	Ear Grain Weight	Grain Qual.2	Grain Moist.3	Plant Pop.	Erect Plants	Leaf Rust4	SCLB5
			--- bu/acre ---			no.	lb	rating	%	no.	%	rating	rating
DeKalb		DKC69-71(RR/YGCB)	247.6	.		121	0.46	2.0	20.9	26463	100	4	1
NK		N91-R9*	236.3	225.4		104	0.50	1.0	19.5	26898	99	2	2
Pioneer		31G66	230.1	.		106	0.47	2.0	18.5	26681	100	2	1
Pioneer		32D99	227.3	.		107	0.48	3.0	19.5	26136	100	4	1
Croplan Genetics		DS822RR	220.1	.		103	0.48	2.5	19.4	26572	100	3	2
Golden Acres		8681FQ	218.4	200.7		103	0.48	3.5	18.2	26027	100	3	2
Croplan Genetics		872RR	214.4	.		103	0.45	2.0	18.8	26899	100	2	2
Southern States		SS842RR	206.5	.		101	0.47	2.0	19.3	25374	99	4	1
AgraTech		1701	202.2	.		106	0.45	1.5	19.6	25047	100	2	1
NK		N 83-N5	201.8	201.5		109	0.42	2.0	18.8	25810	100	4	1
Garst		8288	198.6	196.3		100	0.45	2.5	19.0	25809	100	3	2
Golden Acres		8311	197.8	197.3		104	0.43	2.0	17.8	25483	100	4	1
Greenwood		780	195.2	.		110	0.45	2.5	19.8	23523	100	2	1
Garst		8230IT	184.9	.		102	0.42	2.5	19.6	25483	97	3	2
AgraTech		893RR	182.3	.		99	0.47	2.0	21.2	23631	100	3	1
Vigoro		V61R36	179.1	.		107	0.39	1.5	18.9	25156	99	3	1
AgraTech		905RR	176.6	195.2		102	0.43	3.0	20.3	23849	100	3	1
Dyna-Gro		58K56	176.2	.		101	0.40	2.0	19.4	25592	99	3	1
Average			205.3 6	202.7		105	0.45	2.2	19.4	25579	99	3	1
LSD at 10% Level			13.0	N.S.7		4	0.03	0.9	1.0	1371	1	-	-
Std. Err. of Entry Mean			5.4	3.5		2	0.01	0.3	0.4	578	1	-	-
*  Full-season hybrid.
1.  Yields calculated at 15.5% moisture.
2.  Grain quality rating:  1 = excellent to 5 = poor.
3.  Grain moisture at harvest.
4.  Leaf Rust rating:  1 = resistant to 5 = highly susceptible.
5.  Southern Corn Leaf Blight rating:  1 = resistant to 5 = highly susceptible.
6.  CV = 5.3%, and df for EMS = 51.
7.  The F-test indicated no statistical differences at the alpha = .10 probability level; therefore a 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 4, 2003.
Harvested:	August 16, 2003.
Seeding Rate:	28,000 seeds/acre in 30" rows.
Soil Type:	Tifton loamy sand.
Soil Test:	P = Medium, K = Medium, and pH = 6.3.
Fertilization:	182 lb N, 52 lb P2O5, and 182 lb K2O/acre as preplant; 122 lb N/acre as sidedress.
Previous Crop:	Soybean.
Management:	Paratilled, subsoiled and bedded, rototilled; Prowl, Atrazine, and Accent used for weed control;  Telone II used for nematode control; irrigated 2.5 inches.
Test conducted by A. E. Coy, M. D. Pippin, R. Burton, and R. E. Brooke.