Soil type ............... Group IV                   Tunica clay
                          Groups V-VI                Sharkey clay
Soil pH ................. 7.2
Soil fertility .......... P--high, K--high +
Fertilizer added ........ None
Herbicide application ... Group IV-VI                Command @ 1.0 qt/a
                                                     Roundup @ 1.25 pt/a
                          Group IV Early Planted     Gramoxone @ 1.0 qt/a
                          Group V-VI                 Canopy @ 0.8 oz/a
                                                     Cobra @ 0.8 pt/a
                                                     Poast Plus @ 1.5 pt/a
                                                     Cobra @ 0.8 pt/a
                                                       (2 different times)

Irrigation .............. 2.0 inches (furrow applied, Groups IV-VI) June 27,
                          July 18, July 29, August 11, August 21, 
                          September 1
                          2.0 inches (furrow applied, Groups V-VI) 
                          September 13

Planting date ........... Group IV (Irrigated [I] and
                          nonirrigated [NI])             4/17/95
                          Group IV Late Planted (I)      5/17/95
                          Groups V-VI (I) and (NI)       5/9/95
Harvest date ............ Group IV Early Planted,
                          Early Maturing            (NI) 9/5/95 (I) 9/8/95
                          Group IV Early Planted,
                          Late Maturing             (NI) 9/18/95 (I) 9/28/95
                          Group IV Late Planted,
                          Early Maturing (I)             9/18/95
                          Group IV Late Planted,
                          Late Maturing (I)             10/5/95
                          Group V (I & NI)              10/12/95
                          Group VI                   (I)10/23/95 (NI)10/24/95
                    

Location Summary

Conditions were extremely dry after July 5, with little or no beneficial rainfall through early September. Irrigations were scheduled based on readings from Watermark sensors placed 6 and 12 inches deep in the test area. When the average of the readings was greater than 50 centibars, irrigation water was applied.
Note: Previous crop was soybeans.

Rainfall Summary

             Inches
April......... 9.62
May........... 3.12
June.......... 4.02
July.......... 5.52
August........ 1.41
September..... 1.63
October....... 1.3
 Total........ 26.62

Table 1A. Results of the 1996 Mississippi Soybean Variety Trials on a Tunica clay soil (irrigated) at the MAFES Delta Branch (Stoneville, location 1)

Table 1G. Results of the 1996 Mississippi Soybean Variety Trials on a Sharkey clay soil (irrigated) at the MAFES Delta Branch (Stoneville, location 1)

Maturity Group V Early		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1996
***Planted 5/2/96---Early maturing group***
**Released varieties**
DP 3571Deltapine	---	60.0	69.3	9/25	42	4
H5050	Hartz	---	---	66.9	9/24	24	1
HY 574	HyPerformer	59.3	58.8	66.0	9/27	15	1
A5547	Asgrow	---	54.1	64.4	9/23	21	1
H5454	Hartz	50.7	50.9	63.7	9/24	18	2
RVS 549	Riverside	54.9	52.8	62.3	9/23	19	1
Hutcheson	Public	54.5	53.1	60.3	9/22	16	1
AP 572STS	HyPerformer	---	55.5	60.2	9/26	30	3
H5233	Hartz	---		59.5	9/28	32	3
S57-11	Northrup King	53.1	51.0	59.1	9/23	18	1
Deltapine 415	Deltapine	50.0	50.2	58.8	9/20	21	1
DK 5850	Delta King	50.8	49.0	58.8	9/23	24	1
Pace	Public	---	52.9	58.8	9/24	32	3
TV 5797	Terral	---	51.1	58.7	9/24	21	1
TV 5495	Terral	---	51.6	57.5	9/23	19	2
RVS 529I	Riverside	---	46.9	57.2	9/28	18	1
R Robin-5	Riverside	51.7	49.9	57.1	9/26	15	1
H5218	Hartz	49.9	46.4	57.1	9/23	17	2
H5088RR	Hartz	---	51.3	57.0	9/26	22	2
Dixie 544	Dixie	---	49.5	57.0	9/27	19	1
3576	Dyna-Gro	50.0	49.3	56.8	9/25	19	1
Rhodes	Public	47.3	46.7	56.8	9/27	32	3
FFR 514	AgraTech	---	46.8	56.4	9/18	18	1
RVS 77	Riverside	52.4	52.8	56.0	9/23	16	1
ACCOMAC	Public	---	45.3	56.0	9/24	30	4
Delsoy 5500	Public	---	46.5	55.6	9/25	17	2
DP 3519Deltapine	---	49.9	55.5	9/20	20	1
TN5-95	Public	48.3	44.7	55.5	9/20	18	1
DK 5475	Delta King	---	46.8	55.2	9/23	17	1
Dixie 579	Dixie	---	46.2	53.4	9/27	18	1
499	Riverside	48.7	46.0	53.3	9/28	50	4
5555	Terra Vig	47.5	48.2	53.1	9/23	32	3
H5545	Hartz	47.2	45.4	51.0	9/22	21	1
AT 555	AgraTech	---	---	48.3	9/26	18	1
CX 510C	Dekalb	---	42.0	43.4	9/27	13	1
A5403	Asgrow	---	36.9	39.7	9/27	16	2
**Experimental lines**
N90-516	Public	---	---	64.1	9/24	14	1
TVX 5770	Terral	---	---	60.5	9/29	25	2
HBK X9651	Hornbeck	---	---	58.6	9/18	24	1
HX517462	Hartz	---	---	57.7	9/23	36	3
D92-3267	Public	---	42.6	56.2	8/30	21	2
DGC 5530	DeKalb	---	---	52.7	9/25	17	1
F91-1419	Public	---	45.6	51.6	9/17	16	1
TVX 5666RR	Terral	---	---	50.4	9/28	19	1
DGC 6469	Dekalb	---	---	37.2	8/30	30	2
Overall mean		51.0	49.0	56.5
LSD @ .10		7.0	9.4	5.4
Error degrees of freedom		108	168	88
CV (%)		17.5	20.1	7.1
R2 %		29	22	81

Table 1H. Results of the 1996 Mississippi Soybean Variety Trials on a Sharkey clay soil (irrigated) at the MAFES Delta Branch (Stoneville, location 1)

Maturity Group V Early		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1996
***Planted 5/2/96---Late Maturing Group***
**Released varieties**
9594	Pioneer	---	---	70.1	9/25	27	1
55	Buckshot	53.3	54.6	67.0	9/24	21	2
DP 3589	Deltapine	55.3	54.6	65.7	9/25	38	2
A5885	Asgrow	52.4	53.6	63.3	9/24	25	1
S59-60	Northrup King	55.7	55.1	62.7	9/26	19	1
9592	Pioneer	50.1	50.3	62.7	9/25	24	1
DP 3588	Deltapine	54.6	54.5	62.3	9/23	39	3
Hutcheson	Public	55.1	54.0	62.0	9/24	15	1
TV 5893	Terral	---	52.9	61.6	9/24	30	1
A5944	Asgrow	---	53.4	61.1	10/02	19	1
A5848	Asgrow	---	53.9	60.8	9/27	19	1
H5488	Hartz	---	49.6	59.5	9/25	23	1
A5979	Asgrow	52.7	52.8	58.7	9/27	18	1
UARK-5896	Public	51.7	51.8	57.8	9/28	19	1
HBK 54	Hornbeck	51.9	49.3	57.2	9/23	18	1
HBK 58	Hornbeck	45.3	45.0	54.1	9/24	18	1
A5843	Asgrow	49.1	48.9	51.7	9/27	18	1
EK58	Buckshot	44.0	43.0	49.2	9/28	17	1
HSC 591	HyPerformer	44.8	43.7	49.0	10/02	39	1
**Experimental lines**
R92-1294	Public	---	---	70.6	9/25	20	1
D93-6302	Public	---	---	68.6	9/25	39	3
DGC 60069	DeKalb	---	---	66.6	9/22	23	3
DGC 658	DeKalb	---	---	62.4	9/24	25	2
ACT 96-59	Asgrow	---	---	62.4	9/27	17	1
D93-6598	Public	---	---	59.8	9/23	36	4
HXLA88-25723	Hartz	---	---	59.3	9/23	22	2
F91-1577	Public	---	---	58.8	9/23	35	3
DGC 60071	DeKalb	---	---	57.9	9/26	17	1
R92-1327	Public	---	---	57.7	9/24	17	1
HBK X9659	Hornbeck	---	---	52.7	10/02	34	2
LDKX-51695	Delta King	---	---	47.7	10/02	20	1
Overall mean		51.1	51.2	60.0
LSD @ .10		7.0	9.6	5.9
Error degrees of freedom		94	88	60
CV (%)		17.3	19.6	7.3
R2 %		24	15	74

Table 1I. Results of the 1996 Mississippi Soybean Variety Trials on a Tunica clay soil (nonirrigated) at the MAFES Delta Branch (Stoneville, location 1)

Maturity Group V Early		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1996
***Planted 5/2/96---Early Maturing Group***
**Released varieties**
HY 574	HyPerformer	34.9	36.0	45.3	9/25	22	3
H5454	Hartz	29.6	31.7	40.7	9/20	26	1
TV 5495	Terral	---	31.0	40.1	9/19	33	2
RVS 549	Riverside	31.3	31.7	39.9	9/25	15	1
DK 5850	Delta King	31.8	30.3	39.4	9/23	18	2
H5050	Hartz	---	---	39.2	9/25	20	1
Hutcheson	Public	29.7	29.5	38.9	9/24	17	1
H5545	Hartz	34.3	33.6	38.9	9/20	24	1
H5233	Hartz	---	---	38.5	9/20	41	3
AP 572STS	HyPerformer	---	30.3	38.4	9/24	20	1
DP 3571TN5-95	Public	27.3	28.1	37.0	9/24	22	1
RVS 77	Riverside	29.7	28.1	36.9	9/24	24	1
ACCOMAC	Public	---	25.9	36.9	9/24	31	3
TV 5797	Terral	---	27.7	36.8	9/26	23	2
AT 555	AgraTech	---	28.8	36.6	9/24	17	2
5555	Terra Vig	29.6	28.1	36.4	9/25	30	2
DP 3519Deltapine	---	28.0	35.8	9/24	22	1
R Robin-5	Riverside	32.4	29.1	35.0	9/20	18	1
Dixie 544	Dixie	---	28.1	35.0	9/26	18	1
S57-11	Northrup King	28.7	28.6	35.0	9/19	21	1
DK 5475	Delta King	---	29.1	34.9	9/26	32	2
A5547	Asgrow	---	27.9	33.8	9/25	18	1
FFR 514	AgraTech	---	26.3	33.7	9/25	23	2
499	Riverside	26.0	24.6	32.9	9/23	31	3
Rhodes	Public	27.8	27.4	32.9	9/24	21	2
RVS 529I	Riverside	---	23.8	32.6	9/24	40	4
Delsoy 5500	Public	---	26.2	32.5	9/25	20	1
Deltapine 415	Deltapine	26.0	26.2	32.4	9/24	24	1
H5218	Hartz	26.0	24.7	32.1	9/19	26	1
3576	Dyna-Gro	29.6	27.2	31.9	9/23	13	1
H5088RR	Hartz	---	24.0	31.9	9/19	45	2
Dixie 579	Dixie	---	25.8	28.1	9/26	17	2
A5403	Asgrow	---	21.6	25.7	9/25	16	1
CX 510C	Dekalb	---	---	23.8	9/25	12	3
**Experimental lines**
HX517462	Hartz	---	---	39.4	9/17	32	2
N90-516	Public	---	---	39.2	9/20	24	1
D92-3267	Public	---	27.5	36.8	9/20	22	2
F91-1419	Public	---	28.2	34.9	9/22	27	1
TVX 5666RR	Terral	---	---	34.4	9/25	19	1
TVX 5770	Terral	---	---	33.9	9/27	17	1
DGC 5530	DeKalb	---	---	29.1	9/26	15	1
HBK X9651	Hornbeck	---	---	28.5	9/20	21	1
DGC 6469	Dekalb	---	---	20.6	9/18	30	2
Overall mean		29.7	28.3	34.9
LSD @ .10		6.4	8.6	4.6
Error degrees of freedom		108	168	88
CV (%)		27.3	31.8	9.6
R2 %		21	10	75

Table 1J. Results of the 1996 Mississippi Soybean Variety Trials on a Tunica clay soil (nonirrigated) at the MAFES Delta Branch (Stoneville, location 1)

Maturity Group V Early		Yield (bu/a)			Maturity date	Plant height (in.)	Lodging score
Variety	Brand	3-Year avg.	2-Year avg.	1996
***Planted 5/2/96---Late Maturing Group***
**Released varieties**
9594	Pioneer	---	---	43.5	9/26	25	2
UARK-5896	Public	32.8	34.0	42.8	9/23	19	1
Hutcheson	Public	30.3	30.4	40.7	9/24	16	1
DP 3589	Deltapine	30.9	29.8	40.6	9/24	32	2
S59-60	Northrup King	31.3	30.8	39.3	9/25	18	2
A5979	Asgrow	29.0	29.3	39.3	9/25	20	1
DP 3588	Deltapine	32.7	33.1	39.0	9/19	40	3
9592	Pioneer	29.7	29.1	38.1	9/26	29	3
55	Buckshot	30.7	31.8	37.7	9/24	27	3
H5488	Hartz	---	29.7	37.1	9/24	18	1
A5885	Asgrow	31.2	30.3	36.2	9/25	23	1
TV 5893	Terral	---	28.9	35.8	9/19	24	2
A5944	Asgrow	---	29.0	35.3	9/27	23	1
HBK 58	Hornbeck	26.9	27.4	35.3	9/25	17	1
HBK 54	Hornbeck	29.1	29.1	34.9	9/23	23	1
A5848	Asgrow	---	26.9	34.9	9/27	14	1
A5843	Asgrow	27.6	26.5	32.0	9/27	21	1
HSC 591	HyPerformer	25.5	25.0	31.8	9/28	28	2
EK58	Buckshot	24.3	24.3	29.9	9/25	16	1
**Experimental lines**
R92-1294	Public	---	---	48.6	9/25	22	1
ACT 96-59	Asgrow	---	---	46.1	9/26	19	1
DGC 60069	DeKalb	---	---	40.0	9/25	27	2
R92-1327	Public	---	---	39.9	9/23	17	1
HXLA88-25723	Hartz	---	---	38.5	9/25	26	2
DGC 658	DeKalb	---	---	38.4	9/25	23	3
D93-6302	Public	---	---	35.6	9/19	35	5
DGC 60071	DeKalb	---	---	34.3	9/27	15	1
F91-1577	Public	---	---	33.6	9/19	31	3
LDKX-51695	Delta King	---	---	32.1	9/27	22	2
D93-6598	Public	---	---	31.9	9/19	40	5
HBK X9659	Hornbeck	---	---	29.4	9/30	24	3
Overall mean		29.4	29.2	37.2
LSD @ .10		6.3	8.7	4.3
Error degrees of freedom		94	88	60
CV (%)		27.5	31.2	8.5
R2 %		16	09	76