Location 3 - Grower Cooperator -- Steve Williams' Farm, Olive Branch

Soil type	Collins silt loam
Soil pH	6.3
Soil fertility	P - H+, K - H+
Fertilizer added	0-18-36 @ 200 lb/a
Herbicide application	Preemergence - Squadron @ 3 pt/a
	Postemergence - Classic @ 0.5 oz/a + Assure 10 oz/a
Planting date	Group IV	4/18/97
	Group V	5/7/97
Harvest date	Group IV	9/30/97
	Group V	10/16/97

Location Summary

Early-season conditions were wetter than normal. Some stress and stand reduction was noted in several varieties. Normal rainfall patterns were recorded through mid-season. Dry conditions during early pod fill were followed by adequate rainfall through leaf drop.

Rainfall Summary

Table 43. Maturity Group IV Early Soybeans Planted April 18, 1997, in Olive Branch, DeSoto County.1
Variety2	Brand	Yield			Maturity date	Plant height	Lodging score
		1995	1996	1997
		bu/a	bu/a	bu/a		in
DP 3478	Deltapine	57.1	61.9	74.3	9/19	31	1
AP 4880	AgriPro	--	58.5	69.9	9/18	29	1
TV4664	Terral	--	--	63.1	9/30	32	1
HBK4755	Hornbeck	--	--	59.5	9/20	28	1
STRESSLAND	Public	47.2	42.5	57.8	9/21	31	2
S46-44	NK	--	--	55.4	9/19	36	1
TV 4479	Terral	44.1	46.4	53.7	9/19	29	1
A4715	Asgrow	44.0	54.2	51.3	9/20	29	1
HY 4540	HyPerformer	45.5	50.7	51.3	9/23	32	1
TN4-86	Public	48.8	45.8	50.7	9/17	36	1
A4341	Asgrow	41.4	30.0	49.5	9/21	26	1
Overall mean		47.6	43.9	57.9
LSD (.10)		5.2	9.0	5.3
Error degrees of freedom		36	28	20
CV (%)		7.9	14.8	6.5
R2 (%)		77	72	89
1Collins Silt Loam Soil. 2All are released varieties.

Table 44. Maturity Group IV Late Soybeans Planted April 18, 1997, in Olive Branch, DeSoto County.1
Variety	Brand	Yield			Maturity date	Plant height	Lodging score
		1995	1996	1997
		bu/a	bu/a	bu/a		in
Released Varieties
9482	Pioneer	--	--	74.9	9/19	32	2
S51-00	NK	--	52.6	70.9	9/30	33	1
Manokin	Public	57.1	48.5	70.8	9/30	26	1
KS 4895	Public	--	51.3	69.8	9/21	38	2
S48-14	NK	--	40.0	67.5	9/19	27	1
9511	Pioneer	--	42.7	66.5	9/30	42	3
HBK 5149	Hornbeck	--	--	63.4	9/30	32	1
Dixie 478	Dixie	54.2	48.9	63.2	9/19	36	1
Wicomico	Public	56.8	40.5	62.2	9/30	30	1
A4922	Asgrow	45.3	51.7	61.8	9/24	35	1
499	Riverside	54.9	41.5	59.0	9/30	52	3
DK4860	Delta King	--	35.7	56.0	9/21	32	1
TN4-94	Public	56.4	43.2	54.3	9/28	35	2
HBK 49	Hornbeck	52.1	37.1	54.1	9/30	53	3
TN4-86	Public	48.8	49.8	53.2	9/15	37	1
Delta Grow 4710	Delta Grow	--	--	50.0	9/16	29	2
3495	Dyna-Gro	47.7	33.3	49.7	9/21	43	3
TV 4770	Terral	--	43.1	49.0	9/16	29	1
CX 499c	DEKALB	42.2	41.4	44.2	9/20	37	2
Experimental Lines
RVS 490	Riverside	--	--	65.6	9/22	45	2
DPS 9749	Deltapine	--	--	62.3	9/22	39	2
DGC751	DEKALB	--	--	58.8	9/22	29	1
DGC750	DEKALB	--	--	57.1	9/20	29	1
HBK X9748	Hornbeck	--	--	54.5	9/19	39	3
DK LDKX49994	Delta King	--	--	53.1	9/23	36	1
TVX4975	Terral	--	--	51.4	9/30	46	3
Overall mean		48.9	47.0	59.4
LSD (.10)		8.7	8.1	7.4
Error degrees of freedom		42	56	50
CV (%)		13.0	12.6	9.1
R2 (%)		66	72	77
1Collins Silt Loam Soil.

Table 45. Maturity Group V Early Soybeans Planted May 7, 1997, in Olive Branch, DeSoto County.1
Variety	Brand	Yield			Maturity date	Plant height	Lodging score
		19952	1996	1997
		bu/a	bu/a	bu/a		in
Released Varieties
H5454	Hartz	50.0	65.4	76.9	10/06	36	1
HY 574	HyPerformer	53.1	64.2	76.2	10/05	34	1
H5050	Hartz	48.1	55.7	75.5	10/11	46	2
Hutcheson	Public	53.7	61.5	74.4	10/11	33	1
TV 5770	Terral	--	67.2	73.9	10/03	31	1
R Robin-5	Riverside	48.1	60.4	71.7	10/08	26	1
H5218	Hartz	52.0	58.9	70.2	10/08	32	1
RVS 549	Riverside	53.4	56.1	70.0	10/04	27	1
DK 5475	Delta King	45.8	63.7	69.2	10/10	28	1
A5547	Asgrow	51.2	67.2	69.2	10/08	32	2
TV5495	Terral	44.6	55.7	68.7	10/09	31	1
TV 5797	Terral	47.7	60.3	68.4	10/09	34	1
DP 3519S	Deltapine	50.8	55.5	67.5	10/05	31	1
RVS 77	Riverside	54.4	51.5	66.9	10/14	37	3
TN5-95	Public	48.2	60.3	65.2	10/12	23	1
CX 510C	DEKALB	--	57.9	65.0	10/09	25	1
Rhodes	Public	37.9	53.7	64.7	10/07	33	1
499	Riverside	--	36.5	61.1	10/08	59	3
Delsoy 5500	Public	48.7	56.1	60.5	10/10	30	1
S57-11	NK	53.9	55.9	59.3	10/10	37	1
RVS 529I	Riverside	32.9	29.9	57.8	10/11	51	3
Pace	Public	41.8	46.9	55.4	10/09	38	3
Experimental Lines
R93-171	Public	--	--	74.0	10/08	34	1
Delta Grow 5330	Delta Grow	--	--	73.8	10/07	29	1
DGC753	DEKALB	--	--	68.1	10/09	27	1
DK LDKX51496	Delta King	--	--	66.0	10/08	36	1
DPS 9752	Deltapine	--	--	64.9	10/08	36	4
J94-5	Public	--	--	61.6	10/10	26	1
DK LDKX57722	Delta King	--	--	59.8	10/10	32	1
Overall mean		--	54.7	67.1
LSD (.10)		--	6.8	5.8
Error degrees of freedom		--	88	58
CV (%)		--	9.1	6.3
R2 (%)		--	80	76
1Collins Silt Loam Soil. 21995 was not divided between early and late.

Table 46. Maturity Group V Late Soybeans Planted May 7, 1997, in Olive Branch, DeSoto County.1
Variety	Brand	Yield			Maturity date	Plant height	Lodging score
		19952	1996	1997
		bu/a	bu/a	bu/a		in
Released Varieties
A5959	Asgrow	--	75.7	78.8	10/10	34	1
DK5995	Delta King	--	--	78.6	10/12	31	1
9594	Pioneer	--	63.7	78.2	10/08	34	2
A5944	Asgrow	58.8	64.5	73.4	10/08	30	1
Hutcheson	Public	53.7	60.5	72.9	10/11	30	1
CX570C	DEKALB	--	--	72.8	10/10	32	1
9592	Pioneer	43.2	61.2	72.2	10/14	44	2
TV 5893	Terral	50.4	51.8	71.7	10/10	39	2
A5843	Asgrow	49.3	59.9	70.6	10/10	33	2
S59-60	NK	47.3	63.4	70.0	10/11	33	3
3576	Dyna-Gro	42.8	57.8	68.9	10/07	30	2
HLA572	Hartz	--	--	67.8	10/09	33	1
DK 5850	Delta King	51.1	65.7	67.7	10/12	37	2
UARK-5896	Public	48.0	56.7	67.7	10/06	34	1
A5848	Asgrow	57.3	64.5	67.6	10/07	32	1
55	Buckshot	47.7	64.6	65.5	10/05	34	2
ACCOMAC	Public	44.5	46.2	64.7	10/10	36	1
TV5926	Terral	--	--	61.1	10/10	34	1
DP 3588	Deltapine	40.1	58.2	60.9	10/06	39	3
Experimental Lines
J94-7	Public	--	--	73.0	10/10	34	1
DGC758	DEKALB	--	--	72.2	10/08	32	3
HBK X9659A	Hornbeck	--	--	71.7	10/09	33	1
R92-1294	Public	--	51.4	71.6	10/12	33	2
HBK X9657A	Hornbeck	--	--	66.9	10/12	45	1
S92-1679	Public	--	--	62.5	10/07	33	1
DGC759	DEKALB	--	--	60.8	10/10	30	1
DK LDKX54589	Delta King	--	--	57.1	10/12	27	1
Overall mean		--	56.9	69.1
LSD (.10)		--	5.2	5.0
Error degrees of freedom		--	60	52
CV (%)		--	6.7	5.3
R2 (%)		--	86	78
1Collins Silt Loam Soil. 21995 was not divided between early and late.