Location 7 . . . Grower Cooperator, Carter Brothers Farms, Rolling Fork

Soil type	Sharkey clay
Soil pH	6.9
Soil fertility	P--high +, K--high +
Fertilizer added	None
Herbicide application	Groups V-VI	Select @ 0.5 pt/a
		Cobra @ 0.8 pt/a + Poast Plus @ 1.5 pt/a
Planting date	Groups V-VI	5/2/95
Harvest date	Group V	10/2/95
	Group VI	11/10/95

Location Summary

Adequate moisture was received within a week of planting for germination of trial plots. Moisture and temperature were sufficient in May and early June for normal growth of plants. A rain in mid June carried test plots to early July. After adequate rain was received the first week of July, weather conditions deteriorated the balance of the season, with conditions becoming hot and extremely dry from mid July throughout August and September. This caused extreme stress on all varieties.

Note: Previous crop was soybeans.

Rainfall Summary

	Inches
May	3.85
June	1.25
July	5.53
August	0
September	0.10
October	1.63
Total	12.36

*Cobra and Select were provided by Valent U.S.A. Corporation for this test.

Table 7A. Results of the 1995 Mississippi Soybean Variety Trials on a Sharkey clay soil in Issaquena County (Rolling Fork, location 7)

Maturity Group V		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1995	Maturity date	Plant height (in.)	Lodging score
Released varieties
DP 3588	Deltapine	---	49.8	39.3	9/20	29	1
H5050	Hartz	---	---	35.9	9/20	25	1
H5545	Hartz	43.4	42.1	31.7	9/16	16	1
DP 3589	Deltapine	47.2	47.1	31.6	9/22	23	1
RVS 549	Riverside	37.7	41.0	29.6	9/20	14	1
Hutcheson	Public	38.9	45.0	29.5	9/12	15	1
TV 5495	Terral	---	---	29.0	9/18	25	1
5452	Terra-Vig	37.6	39.5	28.9	9/14	17	1
Deltapine 105	Deltapine	38.3	40.0	28.9	9/25	16	1
S59-60	Northrup King	40.4	40.2	28.9	9/24	17	1
A5885	Asgrow	36.3	43.4	28.6	9/18	17	1
DK 5475	Delta King	---	---	27.1	9/09	16	1
DK 5850	Delta King	41.7	43.4	26.7	9/14	16	1
5555	Terra Vig	33.0	38.8	26.5	9/20	23	1
55	Buckshot	38.0	41.4	26.2	9/20	18	1
RVS 77	Riverside	37.1	39.2	25.6	9/21	16	1
A5843	Asgrow	38.7	42.1	25.5	9/14	17	1
S57-11	Northrup King	---	38.6	25.3	9/18	17	1
TV 5797	Terral	---	---	25.2	9/18	13	1
R Robin-5	Riverside	---	38.7	24.8	9/24	15	1
9584	Pioneer	38.5	39.3	24.7	9/14	16	1
9593	Pioneer	39.3	38.8	24.7	9/09	21	1
HY 574	HyPerformer	40.2	40.9	24.1	9/18	16	1
HBK 54	Hornbeck	---	40.5	24.0	9/18	14	1
H5454	Hartz	---	40.4	23.8	9/14	18	1
9501	Pioneer	---	38.5	23.8	9/09	26	1
EK58	Buckshot	32.6	34.8	23.1	9/25	17	1
S59-95	Northrup King	---	---	23.1	9/18	18	1
AT 555	AgraTech	---	---	22.8	9/12	15	1
DP 3571S	Deltapine	---	---	22.2	9/18	23	1
9551	Pioneer	---	35.5	21.6	9/04	14	1
H5088RR**	Hartz	35.7	38.1	20.8	9/12	16	1
A5979	Asgrow	36.6	38.7	20.8	9/14	15	1
3576	Dyna-Gro	33.1	36.9	20.7	9/18	13	1
Rhodes	Public	35.5	35.0	20.6	9/16	18	1
HSC 591	HyPerformer	34.5	33.9	20.4	9/30	18	1
A5547	Asgrow	---	---	20.1	9/12	14	1
H5488	Hartz	---	---	20.0	9/20	17	1
Deltapine 415	Deltapine	---	36.5	18.4	9/12	16	1
577	Riverside	33.0	34.1	17.7	9/14	20	1
Holliday	Public	26.9	31.1	17.6	9/06	10	1
H5218	Hartz	---	33.3	17.5	9/14	16	1
9592	Pioneer	35.0	35.3	17.4	9/18	19	1
Dixie 544	Dixie	---	---	17.3	9/08	15	1
CB 5691	Amer. Cyanamid	---	---	16.4	9/18	15	1
TN5-92	Public	---	31.1	16.4	9/16	19	1
H5566RR**	Hartz	31.6	32.2	16.1	9/18	16	1
Clifford	Public	35.0	35.7	15.6	9/21	17	1
RVS 529I	Riverside	---	---	14.7	9/12	34	1
FFR 514	AgraTech	---	---	14.0	9/05	13	1
Dixie 579	Dixie	---	---	13.3	9/12	12	1
DP 3519S	Deltapine	---	---	12.5	9/05	10	1
TN5-95	Public	---	30.5	12.5	9/09	14	1
H5164RR**	Hartz	28.7	30.7	12.0	9/25	14	1
HBK 58	Hornbeck	---	33.6	11.8	9/17	14	1
A5403	Asgrow	---	---	10.4	9/09	13	1
Experimental lines
D91-9391	Public	---	---	29.0	9/16	24	1
HY5-X572	HyPerformer	---	---	26.5	9/20	15	1
X9558	Northrup King	---	---	26.0	9/18	18	1
S88-1854	Public	---	---	25.5	9/18	14	1
D92-3267	Public	---	---	24.7	9/12	9	1
R90-515	Public	---	37.4	22.9	9/23	15	1
V88-1234	Public	---	---	21.3	9/18	16	1
ACT 95-59	Asgrow	---	---	19.4	9/16	14	1
ACT 95-58	Asgrow	---	---	19.1	9/18	14	1
TVX 5893	Terral	---	---	16.7	9/24	17	1
D92-9779	Public	---	---	16.3	9/14	14	1
F91-1419	Public	---	---	16.0	9/12	15	1
Overall mean		36.6	38.2	22.3
LSD @ .10		4.3	5.1	7.2
Error degrees of freedom		168	164	136
CV (%)		15.2	14.0	23.9
R2 %		90	93	65

Early maturing group check matured on 9/12/95
** 1995 lines were Roundup Ready and 1994 lines were not Roundup Ready

Table 7B. Results of the 1995 Mississippi Soybean Variety Trials on a Sharkey clay soil in Sharkey County (Rolling Fork, location 7)

Maturity Group VI		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1995	Maturity date	Plant height (in.)	Lodging score
Released varieties
A6711	Asgrow	41.9	40.8	26.9	10/09	18	1
AT 655	AgraTech	---	---	25.6	10/19	27	1
RVS 93-36	Riverside	---	---	24.1	10/16	28	1
A6785	Asgrow	37.8	36.3	23.8	10/09	25	1
TN6-90	Public	34.5	32.6	23.1	10/10	20	1
H6567	Hartz	---	---	22.0	10/12	27	1
9611	Pioneer	---	---	21.5	9/20	21	1
H6686RR**	Hartz	38.4	35.5	20.6	10/24	23	1
RVS 93-44	Riverside	---	---	20.5	10/02	22	1
HBK 67	Hornbeck	---	38.0	20.2	10/24	18	1
9692	Pioneer	37.5	35.0	20.0	10/20	20	1
A6961	Asgrow	40.6	36.7	19.8	10/24	23	1
A6297	Asgrow	---	32.2	19.8	9/29	16	1
HY 677	HyPerformer	37.3	34.7	19.3	10/07	19	1
H6255	Hartz	---	---	17.8	9/28	19	1
S62-66	Northrup King	32.3	31.6	17.6	9/25	16	1
699	Riverside	30.9	33.0	17.6	10/20	22	1
H6062	Hartz	---	---	17.5	10/10	20	1
S66-90	Northrup King	31.3	32.0	16.9	9/25	17	1
HSC 623	HyPerformer	---	---	16.6	9/28	16	1
DP 3682	Deltapine	35.1	32.4	15.1	10/24	15	1
Dillon	Public	31.8	32.7	15.0	9/25	21	1
Centennial	Public	---	30.0	14.9	10/23	25	1
DP 3606	Deltapine	38.0	36.7	14.9	9/25	17	1
Hartz 6200	Hartz	29.2	28.9	13.5	9/19	14	1
HSC B2J	HyPerformer	---	26.1	13.4	9/23	16	1
Sharkey	Public	---	32.1	13.2	10/25	31	1
Cajun	Riverside	30.7	29.4	12.9	10/23	15	1
TV 6565	Terra-Vig	30.8	27.7	12.6	10/11	14	1
Lamar	Public	---	27.4	12.3	10/19	22	1
Young	Public	35.3	33.5	11.7	10/05	22	1
6653	Terra-Vig	---	28.8	11.2	10/19	15	1
6792	Terra-Vig	31.3	29.8	10.3	9/19	20	1
9641	Pioneer	31.5	29.0	10.1	9/26	17	1
66	Buckshot	---	25.0	4.9	10/28	20	1
Experimental lines
SC 89-181	Public	---	---	28.4	10/16	25	1
TVX 6696	Terral	---	---	25.4	10/18	27	1
X9562	Northrup King	---	---	21.8	10/28	17	1
V88-494	Public	---	---	20.6	10/17	16	1
DPX 3681	Deltapine	---	---	16.6	10/19	16	1
DPX 3640	Deltapine	---	---	14.7	9/30	20	1
EXP 41345	AgraTech	---	---	14.5	10/13	14	1
R91-4484	Public	---	---	5.4	9/23	12	1
Overall mean		34.1	31.9	17.3
LSD @ .10		4.6	5.5	8.8
Error degrees of freedom		126	112	86
CV (%)		17.3	18.2	37.4*
R2 %		90	93	58

Early maturing group check matured on 9/20/95
** 1995 lines were Roundup Ready and 1994 lines were not Roundup Ready
* Precision of the data from this study is low as per high CVs and low R2. Extremely low yields are indicative of uncontrolled stress that occurred and negated the measurement of true varietal differences, therefore data should be viewed accordingly.

To Location 8 Results

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Information Bulletin 295

MAFES/MSU
Mississippi Agricultural and Forestry Experiment Station
Verner G. Hurt, Director -- Mississippi State, MS 39762
Donald W. Zacharias, President, Mississippi State University
R. Rodney Foil, Vice President

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Information Bulletin 295 / Last Update: 4-11-96