Table 1. Summary of 1998 Yields for Maturity Group IV Early Soybeans.1
Variety	Brand	Clarksdale	Stoneville Irrigated	Stoneville Nonirrigated	Delta avg.	Olive Branch	Prairie	MSU	Raymond2	Hill avg.	Overall avg.
		bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A
AP 4880	Agripro	64.1	66.6	24.9	51.9	54.8	30.0	49.9	--	44.9	48.4
A4341	Asgrow	54.9	41.4	17.2	37.8	49.7	12.5	30.7	--	30.9	34.4
A4604	Asgrow	56.2	64.7	22.4	47.8	50.0	26.9	44.9	--	40.6	44.2
X9240RR	Delta King	56.2	54.0	21.7	44.0	53.0	19.2	41.7	--	37.9	41.0
DP 3478	Deltapine	67.9	67.6	25.5	53.7	64.1	29.8	51.3	--	48.4	51.1
HBK 4600	Hornbeck	61.0	63.4	25.4	49.9	50.3	27.1	48.6	--	42.0	46.0
HBK 4755	Hornbeck	56.3	58.4	22.2	45.6	59.8	14.8	44.8	--	39.8	42.7
HY 4540	HyPerformer	62.6	57.1	24.9	48.2	54.6	20.7	43.4	--	39.6	43.9
S46-44	NK	56.5	53.2	20.7	43.5	43.9	19.3	41.3	--	34.8	39.2
TS 4792	Terra	47.0	50.3	22.1	39.8	42.9	30.3	33.4	--	35.5	37.7
TV4479	Terral	60.2	57.9	24.8	47.6	51.8	22.4	44.1	--	39.4	43.5
TV4664	Terral	54.0	62.4	21.5	46.0	53.6	18.4	38.6	--	36.9	41.5
Stressland	Public	43.7	59.4	15.1	39.4	46.4	16.3	37.4	--	33.4	36.4
TN4-86	Public	48.4	46.9	25.1	40.1	46.1	30.1	31.6	--	35.9	38.0
TN4-94	Public	59.4	54.8	17.3	43.8	54.3	28.4	43.3	--	42.0	42.9
Overall Mean		56.6	57.3	22.0	45.3	51.7	23.1	41.7	--	38.8	42.0
LSD (.10)		4.1	5.7	3.1	2.5	7.4	8.2	6.0	--	4.1	2.4
Error degrees of freedom		28	30	28	84	28	28	28	--	84	168
CV (%)		5.2	7.2	10.0	7.2	10.3	25.6	10.4	--	13.5	10.3
R2 (%)		89	82	77	98	85	83	77	--	93	96
1All are released varieties. 2Not harvested.

Table 2.Summary of 1998 Yields for Maturity Group IV Late Soybeans.
Variety	Brand	Clarksdale	Stoneville Irrigated	Stoneville Nonirrigated	Delta avg.	Olive Branch	Prairie	MSU	Raymond1	Hill avg.	Overall avg.
		bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A
A4922	Asgrow	60.5	61.2	19.9	47.2	55.9	22.8	41.5	--	40.1	43.7
DP 3478	Deltapine	61.8	62.0	18.0	47.3	57.0	30.5	44.3	--	43.9	45.6
DPX 8S49 (E)2	Deltapine	61.2	67.3	22.8	50.4	56.3	36.8	54.5	--	49.2	49.8
Dixie 478	Dixie	63.8	66.0	17.7	49.2	60.4	30.0	45.9	--	45.4	47.3
DG3495	Dyna-Gro	52.8	59.2	16.1	42.7	38.7	34.1	45.8	--	39.5	41.1
FFR 495	Elite	65.1	66.4	17.5	49.7	59.0	31.6	50.9	--	47.2	48.5
Genesis 9482	Genesis	53.5	57.5	18.7	43.2	51.6	26.2	45.8	--	41.2	42.2
HBK 49	Hornbeck	51.9	54.3	19.0	41.7	42.3	33.8	42.7	--	39.6	40.7
HBK 4890	Hornbeck	58.5	75.6	15.6	49.9	51.1	27.6	38.5	--	39.1	44.5
HBK 5149	Hornbeck	69.5	51.0	15.6	45.4	44.9	27.6	46.1	--	39.5	42.5
HBK X9749 (E)2	Hornbeck	59.9	62.6	20.4	47.6	57.7	25.7	41.1	--	41.5	44.6
9482	Pioneer	67.6	71.7	25.4	54.9	55.5	33.5	50.9	--	46.6	50.8
9492	Pioneer	56.7	58.9	22.7	46.1	48.8	25.3	36.4	--	36.8	41.5
9511	Pioneer	68.8	63.7	17.1	49.9	46.9	40.4	54.9	--	47.4	48.7
RVS 490	Riverside	61.2	60.8	13.0	45.1	46.5	32.9	49.5	--	42.9	44.1
TV 4770	Terral	59.5	58.6	20.7	46.3	49.7	28.4	40.0	--	39.4	42.9
TV4975	Terral	61.6	64.6	15.7	47.3	53.6	43.7	48.4	--	48.6	47.9
KS 4895	Public	67.4	68.4	21.6	52.5	57.4	35.4	50.0	--	47.6	50.1
Manokin	Public	56.0	45.6	20.0	40.5	39.0	26.1	41.0	--	35.4	37.9
Overall Mean		60.9	61.9	18.8	47.2	51.2	31.2	45.7	--	42.7	44.9
LSD (.10)		5.3	5.7	3.6	2.8	9.3	7.6	4.6	--	4.2	2.5
Error degrees of freedom		36	36	36	108	36	36	36	--	108	216
CV (%)		6.4	6.7	14.0	7.7	13.2	17.6	7.3	--	12.6	10.2
R2 (%)		74	81	69	98	74	81	79	--	88	96
1Not harvested. 2(E) = Experimental

Table 3. Summary of 1998 Yields for Maturity Group V Early Soybeans.
Variety	Brand	Clarksdale	Stoneville Irrigated	Stoneville Nonirrigated	Delta avg.	Olive Branch	Prairie	MSU	Raymond1	Hill avg.	Overall avg.
		bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A
AP527STS	Agripro	66.6	42.3	8.0	39.0	39.6	27.0	36.3	--	34.3	36.7
A5547	Asgrow	74.2	61.0	10.3	48.5	54.8	28.3	41.3	--	41.5	45.0
A5704	Asgrow	67.0	57.7	14.1	46.3	46.1	21.9	38.0	--	35.3	40.8
55	Buckshot	68.8	55.7	11.5	45.3	46.3	35.1	43.6	--	41.7	43.5
DG500A (E)2	DEKALB	59.0	73.1	13.3	48.5	54.2	26.5	41.9	--	40.9	44.7
DG500B (E)2	DEKALB	58.0	48.5	8.6	38.4	46.7	25.9	33.1	--	35.2	36.8
Delta King 5850	Delta King	65.6	64.7	11.6	47.3	53.9	34.9	41.0	--	43.3	45.3
X9450RR	Delta King	61.7	48.4	8.6	39.6	35.0	20.7	26.6	--	27.4	33.5
DP 3519S	Deltapine	49.6	53.2	11.2	38.0	56.0	28.6	40.4	--	41.7	39.9
DP 5354	Deltapine	73.8	60.9	12.1	48.9	52.3	34.8	43.3	--	43.5	46.2
DPX 8S56 (E)2	Deltapine	62.4	61.0	9.4	44.3	59.1	39.0	47.9	--	48.7	46.5
Genesis 9511	Genesis	68.6	60.3	13.1	47.3	54.3	29.6	37.8	--	40.6	44.0
H5050	Hartz	63.5	54.3	8.9	42.2	43.8	36.7	42.5	--	41.0	41.6
HY 574	HyPerformer	63.2	52.2	9.4	41.6	51.6	39.7	47.3	--	46.2	43.9
S57-11	NK	61.2	53.4	12.6	42.4	40.4	33.8	39.5	--	37.9	40.2
X9851 (E)2	NK	65.6	51.1	11.2	42.6	50.7	27.6	37.2	--	38.5	40.6
X9855 (E)2	NK	62.8	57.8	11.4	44.0	57.4	31.7	45.9	--	45.0	44.5
9511	Pioneer	67.7	63.9	15.5	49.0	48.7	39.7	45.9	--	44.8	46.9
95B33	Pioneer	72.5	74.5	13.2	53.4	60.7	35.8	46.9	--	47.8	50.6
RVS 77	Riverside	70.7	53.1	8.4	44.1	40.3	33.4	43.6	--	39.1	41.6
RVS 520	Riverside	70.4	49.7	3.6	41.2	32.8	33.9	39.4	--	35.4	38.3
RVS 529I	Riverside	56.5	45.2	8.1	36.6	44.3	29.8	39.9	--	23.3	30.0
RVS 549	Riverside	64.3	48.1	8.4	40.3	49.2	28.3	39.1	--	38.9	39.6
RVS Robin-5	Riverside	70.8	54.7	10.0	45.2	41.8	35.1	42.1	--	39.7	42.5
TV5495	Terral	61.0	49.3	11.2	40.5	52.9	37.4	45.0	--	45.1	42.8
Delsoy 5500	Public	73.3	61.3	8.6	47.7	41.3	29.6	36.9	--	35.9	41.8
Essex	Public	70.2	56.5	9.0	45.2	39.3	21.3	33.6	--	31.4	38.3
Essex RSVI (E)2	Public	74.9	52.5	9.7	45.7	43.4	25.2	33.0	--	33.9	39.8
Hutcheson	Public	76.4	49.6	13.0	46.3	48.8	31.7	41.7	--	40.7	43.5
TN5-95	Public	62.4	53.7	9.3	41.8	37.4	33.2	38.9	--	36.5	39.2
V89-805 (E)2	Public	64.7	64.6	10.9	46.7	54.0	31.2	33.4	--	39.5	43.1
V90-1012 (E)2	Public	71.0	54.0	8.5	44.5	48.3	30.5	42.5	--	40.4	42.5
Overall Mean		66.2	55.8	10.4	44.1	47.7	31.2	40.2	--	39.7	41.9
LSD (.10)		3.6	5.2	2.6	2.3	8.7	7.4	5.0	--	4.1	2.3
Error degrees of freedom		62	62	62	186	62	62	62	--	186	372
CV (%)		4.0	6.9	18.6	6.6	13.4	17.3	9.2	--	13.3	10.2
R2 (%)		89	85	69	99	82	76	76	--	86	97
1Not harvested. 2(E) = Experimental.

Table 4. Summary of 1998 Yields for Maturity Group V Late Soybeans.
Variety	Brand	Clarksdale	Stoneville Irrigated	Stoneville Nonirrigated	Delta avg.	Olive Branch	Prairie	MSU	Raymond1	Hill avg.	Overall avg.
		bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A	bu/A
A5843	Asgrow	69.7	58.8	11.2	46.6	42.5	32.6	38.5	--	37.9	42.3
A5848	Asgrow	76.8	58.1	10.8	48.6	41.4	39.7	37.4	--	39.5	44.0
A5944	Asgrow	79.6	58.8	10.3	49.6	30.1	33.7	41.2	--	35.0	42.3
A5959	Asgrow	82.0	52.9	10.7	48.5	40.9	39.0	44.2	--	41.4	45.0
CX570c	DEKALB	65.8	60.5	12.0	46.1	39.5	35.9	42.8	--	39.4	42.8
DG758	DEKALB	66.8	53.5	10.2	43.5	37.5	42.0	44.7	--	41.4	42.5
DG759	DEKALB	61.7	47.6	8.9	39.4	28.8	29.1	37.1	--	31.7	35.6
DG858 (E)2	DEKALB	58.3	57.2	10.5	42.0	38.9	31.4	35.1	--	35.1	38.6
Delta King 5995	Delta King	83.1	70.1	11.5	54.9	37.8	35.3	45.6	--	39.6	47.3
DP 3588	Deltapine	64.5	55.0	9.8	43.1	27.1	39.7	43.1	--	36.6	39.8
DPX 8S59 (E)2	Deltapine	62.0	59.9	10.9	44.3	30.2	38.8	41.9	--	37.0	40.7
DG3576	Dyna-Gro	74.2	55.8	9.2	46.4	42.1	35.7	34.6	--	37.5	41.9
FFR 597	Elite	66.4	52.3	9.4	42.7	37.4	36.6	38.5	--	37.5	40.1
HBK 5770	Hornbeck	62.2	64.0	8.9	45.0	36.4	45.7	41.6	--	41.2	43.1
HBK 5990	Hornbeck	70.7	54.6	10.7	45.3	41.4	29.9	42.5	--	37.9	41.6
HBK X571-98 (E)2	Hornbeck	66.3	60.8	11.1	46.1	42.6	35.6	40.2	--	39.5	42.8
S51-00	NK	72.4	60.1	10.3	47.6	42.1	40.0	43.8	--	42.0	44.8
S59-60	NK	75.2	62.5	10.4	49.4	37.5	34.3	45.3	--	39.0	44.2
9594	Pioneer	74.9	62.9	11.4	49.7	35.0	38.9	45.5	--	39.8	44.8
TV5893	Terral	67.0	55.4	8.5	43.6	34.2	43.1	48.6	--	41.9	42.8
TV5926	Terral	72.2	50.3	9.8	44.1	34.2	30.7	36.0	--	33.6	38.9
DT95-15091 (E)2	Public	67.7	66.7	13.7	49.4	39.2	41.4	47.4	--	42.7	46.1
DT95-15550 (E)2	Public	68.4	63.8	10.2	47.5	36.2	40.8	44.3	--	40.4	44.0
DT95-17556 (E)2	Public	69.5	54.4	12.9	45.6	35.9	36.1	38.7	--	36.9	41.3