2002 Corn Performance Tests									Table of Contents
The Georgia Agricultural Experiment Station College of Agricultural and Environmental Sciences The University of Georgia

Research Report Number 684 October 2002

Quincy, Florida: Mid and Full-Season Corn Hybrid Performance, 2002, Irrigated
			Yield¹
Company or Brand Name		Hybrid Name	2002	3-Year Average		Ears/100 Plants	Ear Grain Weight	Grain Quality²	Grain Moisture³	Plant Population	Erect Plants
			bu/acre			no.	lb	rating	%	no.	%

DeKalb		DKC68-70(YG)	158.2	.		156	0.28	1.5	21.9	22096	100
DeKalb		DKC69-70(YG)	131.5	.		171	0.20	1.5	18.3	22411	100
DeKalb		DK687RR	120.9	.		146	0.23	2.0	21.6	21859	100
NK		N 83-N5	120.4	151.4		172	0.19	2.1	16.3	21307	100
DeKalb		DK 697	116.2	150.1		191	0.16	2.4	15.9	21464	100

Asgrow		RX897RR	111.6	.		136	0.22	2.0	16.0	21543	100
Croplan Genetics		702	109.8	144.4		136	0.22	2.1	19.1	21780	99
Garst/AgriPro		8288	103.7	133.9		200	0.15	2.9	17.2	20281	100
Southern States		SS842RR	101.4	.		185	0.15	3.1	19.4	21780	100
Pioneer		31R88	82.3	125.0		177	0.12	3.3	17.9	22175	100

FL		Tex-Cuban	79.2	.		147	0.18	3.2	26.9	19084	88
NK		N91-R9 *	78.7	122.8		158	0.13	2.6	16.7	21780	100
Garst		8118RR	74.8	.		123	0.17	2.8	18.7	20517	97

Average			106.8⁴	137.9		161	0.18	2.4	18.9	21390	99
LSD at 10% Level			13.6	10.8		16	0.02	0.5	1.2	1026	4
Std. Err. of Entry Mean			5.7	4.5		7	0.01	0.2	0.5	430	2

* 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. CV = 10.6%, 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:	March 25., 2002.
Harvested:	August 20, 2002.
Seeding Rate:	25,500 seeds/acre in 36" rows.
Soil Type:	Dothan sandy loam.
Soil Test:	P = Medium, K = Medium, and pH = 5.6.
Fertilization:	18 lb N, 54 lb P₂O₅, and 108 lb K₂O/acre as preplant; 153 lb N/acre as sidedress.
Previous Crop:	Soybean.
Management:	Subsoiled and strip tilled; Aatrex, Prowl, Permit and Accent used for weed control; Phorate and Lorsban used for insect control; irrigated 5.0 inches.

Test conducted by B. Kidd and R. Beasley.