Arkansas Soybean. Performance Tests. D.G. Dombek D.K. Ahrent R.D. Bond I.L. Eldridge ARKANSAS AGRICULTURAL EXPERIMENT STATION

Transcription

1 Arkansas Soybean Performance Tests 2002 D.G. Dombek D.K. Ahrent R.D. Bond I.L. Eldridge ARKANSAS AGRICULTURAL EXPERIMENT STATION Division of Agriculture University of Arkansas December 2002 Research Series 500

2 This publication is available on the Internet at Additional printed copies of this publication can be obtained free of charge from Communication Services, 110 Agriculture Building, University of Arkansas, Fayetteville, AR Cover photo of ridge-tilled soybeans by Keith Weller, USDA ARS Technical editing and cover design by Cam Romund; Web conversion by Shelia Kidd Arkansas Agricultural Experiment Station, University of Arkansas Division of Agriculture, Fayetteville. Milo J. Shult, Vice President for Agriculture and Director; Gregory J. Weidemann, Dean, Dale Bumpers College of Agricultural, Food and Life Sciences and Associate Vice President for Agriculture Research, University of Arkansas Division of Agriculture. SG950QX5. The University of Arkansas Division of Agriculture follows a nondiscriminatory policy in programs and employment. ISSN: CODEN:AKAMA6

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5 ARKANSAS SOYBEAN PERFORMANCE TESTS 2002 D. G. Dombek D. K. Ahrent R. D. Bond I. L. Eldridge 1 1 D. G. Dombek is a resarch associate and D. K. Ahrent, R. D. Bond, and I. L. Eldridge are research specialists in the Department of Crop, Soil and Environmental Sciences, University of Arkanas, Fayetteville, AR

6 ACKNOWLEDGMENTS The contributions of the following individuals are gratefully acknowledged: Department of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville Ms. Marilyn McClelland, Research Associate-Weed Science Department of Plant Pathology, University of Arkansas, Fayetteville Dr. Bob Riggs, University Professor Dr. Bob Robbins, Professor Dr. John Rupe, Professor Ms. Carol Becton, Research Associate University of Arkansas Agricultural Research and Extension Center, Fayetteville Mr. J. V. Skinner, Center Director University of Arkansas Cooperative Extension Service, Little Rock Dr. Richard D. Cartwright, Extension Plant Pathologist School of Agriculture, Arkansas State University, Jonesboro Dr. J. D. Widick, Research Assistant Professor Mr. Joshua Dunn, Research Specialist Northeast Research and Extension Center, Keiser Dr. F. M. Bourland, Center Director Mr. Eddie Gordon, Research Specialist Cotton Branch Station, Marianna Mr. Claude Kennedy, Resident Director Mr. Dale Yadon, Research Specialist Southeast Research and Extension Center, Monticello Dr. Edwin A. Colburn, Center Director Mr. Larry Earnest, Superintendent, Rohwer Division Mr. Randy Cingolani, Research Specialist, Rohwer Division Rice Research and Extension Center, Stuttgart Dr. Karen Moldenhauer, Interim Center Director Mr. Jamie Branson, Research Specialist Mr. Ronnie Sherman, Research Specialist Southwest Research and Extension Center, Hope Dr. Mike Phillips, Center Director Dr. T. L. Kirkpatrick, Professor Mr. J. D. Barham, Research Specialist Vegetable Substation, Kibler Mr. Dennis Motes, Resident Director Mr. Steve Eaton, Research Associate Mr. Larry Martin, Research Associate Special thanks to the Burton Brothers Farm. TECHNICAL ADVISORY COMMITTEE Dr. L. O. Ashlock Extension Agronomist - Soybeans, Cooperative Extensive Service Dr. R.K.Bacon Professor, Department of Crop, Soil and Environmental Sciences Dr. J.L.Barrentine Professor and Head, Department of Crop, Soil and Environmental Sciences Dr. F. M. Bourland Center Director and Professor, Northeast Research and Extension Center Dr. W. F. Johnson, Jr. Extension Agronomist - Wheat and Feed Grains, Cooperative Extension Service Dr. T. L. Kirkpatrick Professor, Southwest Research and Extension Center

7 CONTENTS Introduction... 7 Methods... 7 Table 1. Yields of Early Planted Soybean Cultivars at All Locations, Table 2. Performance of Nonirrigated Early Planted Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, Table 3. Performance of Irrigated Early Planted Soybean Cultivars, Southeast Research and Extension Center, Rohwer, AR, Table 4. Performance of Nonirrigated Early Planted Soybean Cultivars, Burton Brothers Farm, LaFayette County, AR, Table 5. Performance of Irrigated Early Planted Soybean Cultivars, Vegetable Substation, Kibler, AR, Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, Table 7. Performance of Irrigated Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, Table 8. Performance of Nonirrigated Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, Table 9. Performance of Irrigated Soybean Cultivars, Cotton Branch Station, Marianna, AR, Table 10. Performance of Nonirrigated Soybean Cultivars, Cotton Branch Station, Marianna, AR, Table 11. Performance of Irrigated Soybean Cultivars, Rice Research and Extension Center, Stuttgart, AR, Table 12. Performance of Irrigated Soybean Cultivars, Southeast Research and Extension Center, Rohwer Division, Rohwer, AR Table 13. Performance of Nonirrigated Soybean Cultivars, Burton Brothers Farm, LaFayette County, AR, Table 14. Performance of Irrigated Soybean Cultivars in Double-Crop Tests, Northeast Research and Extension Center, Keiser, AR, Table 15. Tolerance of Soybean Cultivars to Propanil Drift, Table 16. Results of Greenhouse Test for Soil Chloride Reaction, Participants and Entries 2002 Early Planted Tests...90 Participants and Entries 2002 Commercial Cultivar Tests Location Map...(inside back cover) Arkansas Variety Testing Website Results of Arkansas variety performance tests for wheat and other small grains, rice, soybeans, cotton, corn and grain sorghum are available on the web at:

8 ARKANSAS SOYBEAN PERFORMANCE TESTS D. G. Dombek, D. K. Ahrent, R. D. Bond, and I. L. Eldridge INTRODUCTION Soybean cultivar performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies developing cultivars and/or marketing seed within the State, and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for soybean producers. The 2002 soybean cultivar performance tests were conducted at the Northeast Research and Extension Center (NEREC) at Keiser, the Cotton Branch Station (CBS) near Marianna, the Rice Research and Extension Center (RREC) near Stuttgart, the Southeast Research and Extension Center - Rohwer Division (SEREC-RD) near Rohwer, the Burton Brothers Farm (BBF) in LaFayette County, and the Vegetable Substation (VSS) near Kibler. A test location map can be found inside the back cover. METHODS Soybean cultivars were entered by commercial seed companies and state and federal institutions. Recommended cultural practices were used at each location and all data were taken from a uniform set of instructions. Cultivars were grouped by maturity groups based on information provided by the originating company or institution. To facilitate field operations and to allow for fairer comparisons between cultivars, entries in the Group IV and V Commercial Cultivar Tests (CCT) were separated into "early" cultivars and "late" cultivars. Cultivars in the early Group IV test had a relative maturity range of 4.0 to 4.7 and in the Group V test, a range of 5.0 to 5.5. Cultivars in the late Group IV test had a relative maturity range of 4.8 or 4.9 and in the late Group V test, a range of 5.6 to 5.9. Early planted tests (EPT) were established at NEREC, SEBS, BBF, and VSS. As with the CCT IVs and Vs, entries in the EPT were subdivided into "early" and "late" cultivars. Within each test, entries were arranged as a randomized complete block design with three replications. Plots in all tests were 4 or 5 rows wide depending on between-row spacing and 20 feet in length. Seeds were packaged for recommended planting rates and were planted with a cone planter. Specific location and cultural practice information accompanies each table. Interior rows of each plot were harvested for yield determination after ends were trimmed. Percent moisture was recorded for all harvested seed of early-planted tests and plot weights were adjusted to thirteen percent moisture. Harvested seeds of all other tests were allowed to dry to uniform moisture before weighing, and weights were converted to yield in bushels per acre (bu/a). Plots were visually rated for shattering and lodging. Shattering ratings were carried out on border rows according to the following scale: 1. No shattering % shattered % shattered % shattered 5. 20% or more shattered Lodging ratings were recorded on a scale from 1 to 5 based on the following criteria: 1. Almost all plants erect 2. Either all plants leaning slightly, or a few plants down 3. Either all plants leaning moderately, or 25-50% of the plants down 4. Either all plants leaning considerably, or 50-80% of the plants down 5. All plants down badly Average plant height was recorded in inches for each plot. 1 Use of products and trade names in this report does not constitute a guarantee or warranty of the products named and does not signify that those products are approved to the exclusion of comparable products. AAES Research Series 500 University of Arkansas, Division of Agriculture, Variety Testing Program 7

9 Tests were established at the Main Experiment Station at Fayetteville on a Taloka silt loam soil to evaluate cultivar sensitivity to the herbicide propanil. Propanil was applied overthe-top of one-half of each plot at 0.75 lb active ingredient/a (0.25X recommended rate) when plants were in the V4 to V5 growth stage to simulate drift from rice fields. Plots were visually rated 7 and 21 days after propanil application by Marilyn McClelland. Cultivars were screened for tolerance to soil chloride in greenhouse tests conducted by Dr. J. D. Widick, ASU, Jonesboro. AAES Research Series 500 University of Arkansas, Division of Agriculture, Variety Testing Program 8

10 Table 1. Yields of Early Planted Soybean Cultivars at All locations, ,2. Keiser Rohwer Burton Kibler Brand/Cultivar Nonirr. Irr. Nonirr. Irr. Average bu/a Early Maturing Cultivars (RM 4.6 or Less) Armor 39-E Armor 42-L Armor 44-R Armor 44-R ASGROW AG ASGROW AG ASGROW AG ASGROW AG ASGROW AG Croplan Genetics RC Delta King 3862RR Delta King 3961RR Delta King 3964RR Delta King 3968RR Delta King 4461RR Delta King XTJ040RR Deltapine DPX3761RR Deltapine DPX3819RR Deltapine DPX3940RR FFR 4455RR Hartz H3090RR Hartz H4454RR HBK R HBK R Morsoy RT Morsoy RT NK Brand S39-Q NK Brand S40-R NK Brand S46-G Pioneer Brand 94B Pioneer Brand 94B Progeny 4303RR Progeny 4401RR Southern States RT3799N Southern States RT3802N Southern States RT4502N Terral TV4589RR Grand mean LSD (5%) C.V. (%)

11 Table 1. Yields of Early Planted Soybean Cultivars at All locations, ,2, continued. Keiser Rohwer Burton Kibler Brand/Cultivar Nonirr. Irr. Nonirr. Irr. Average bu/a Late Maturing Cultivars (RM 4.7 to 5.3) Armor 47-G Armor AXR ASGROW AG ASGROW AG Croplan Genetics RC Croplan Genetics RC Delta King 4762RR Delta King 4763RR Delta King 4868RR Delta King 4965RR Delta King 5366RR Delta King XTJ048RR Deltapine DP4690RR Deltapine DP4748S Deltapine DP5110S Deltapine SG 498RR FFR 4712RR FFR 4891RR FFR 4922RR FFR 5225RR Hartz H4884RR Hartz H5223RR HBK R Manokin Morsoy RT Morsoy RT Morsoy RT NK Brand S52-U NK Brand X248R Pioneer 94B Pioneer Brand 94B Progeny 4858RR Progeny Progeny 4932RR Progeny 5001RR Progeny 5120N Progeny 5250RR R Southern States RT Southern States RT5001N

12 Table 1. Yields of Early Planted Soybean Cultivars at All locations, ,2, continued. Keiser Rohwer Burton Kibler Brand/Cultivar Nonirr. Irr. Nonirr. Irr. Average bu/a Late Maturing Cultivars (RM 4.7 to 5.3) continued Southern States RT4902N Southern States RT5302N Terral TV4886RR Terral TV4890RR Terral TVX39R Grand mean LSD (5%) C.V. (%) Keiser Nonirr. = Northeast Research and Extension Center, Nonirrigated. Rohwer Irr. = Southeast Research and Extension Center - Rohwer Division, Irrigated. Burton Nonirr. = Burton Brothers Farm (Lafayette County), Nonirrigated. Kibler Irr. = Vegetable Substation, Irrigated. 2 A nonirrigated test was also planted at the Southeast Research and Extension Center- Rohwer Division. Because of abnormally hot and dry conditions, resulting in reduced yields and poor uniformity, this test will not be reported.

13 Table 2. Performance of Nonirrigated Early Planted Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, Year 3-Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Early Maturing Cultivars (RM 4.6 or Less) Morsoy RT Armor 44-R Deltapine DPX3761RR ASGROW AG Delta King XTJ040RR Pioneer Brand 94B ASGROW AG Armor 44-R NK Brand S39-Q ASGROW AG Terral TV4589RR Southern States RT4502N Progeny 4401RR Delta King 3968RR Hartz H3090RR FFR 4455RR HBK R Hartz H4454RR Armor 39-E Delta King 4461RR ASGROW AG Morsoy RT Delta King 3961RR Delta King 3964RR HBK R NK Brand S40-R ASGROW AG NK Brand S46-G Croplan Genetics RC Deltapine DPX3819RR Southern States RT3802N Southern States RT3799N Armor 42L Progeny 4303RR Delta King 3862RR Deltapine DPX3940RR Pioneer Brand 94B Grand mean LSD (5%) n s. C.V. (%)

14 Table 2. Performance of Nonirrigated Early Planted Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, 2002, Continued Year 3-Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) Delta King 5366RR FFR 5225RR R NK Brand S52-U Southern States RT5302N Croplan Genetics RC Manokin NK Brand X248R Progeny 5120N Southern States RT 5001N Deltapine DP5110S Pioneer 94B Armor AXR FFR 4922RR Southern States RT4902N Hartz H5223RR HBK R Morsoy RT Progeny 4932RR Delta King 4763RR ASGROW AG Progeny Progeny 5250RR Armor 47-G Progeny 5001RR Terral TV4886RR Morsoy RT FFR 4712RR Delta King 4965RR Deltapine DP4690RR Deltapine DP4748S Delta King 4762RR Hartz H4884RR Deltapine SG 498RR Delta King 4868RR Terral TV4890RR Southern States RT ASGROW AG Progeny 4858RR Pioneer Brand 94B

15 Table 2. Performance of Nonirrigated Early Planted Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, 2002, Continued Year 3-Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) continued Delta King XTJ048RR FFR 4891RR Terral TVX39R Morsoy RT Croplan Genetics RC Grand mean LSD (5%) C.V. (%) Soil Series...Commerce silt loam Previous Crop...Soybean Row Width...38 inches Fertilizer Applied...None Lime Applied...None Planting Date Herbicide Application...3 pts./a Squadron + 1 pt./a Prowl, , 1.5 pts./a Flexstar oz./a Butyrac + 8 oz./a Select, Irrigation Dates... None Harvest Dates...Early: Late: , Precipitation (inches) April May June July August September Total Average Departure

16 Table 3. Performance of Irrigated Early Planted Soybean Cultivars, Southeast Research and Extension Center, Rohwer, AR, Year 1 3-Year 1 Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Early Maturing Cultivars (RM 4.6 or Less) Terral TV4589RR Morsoy RT Croplan Genetics RC NK Brand S40-R Armor 44R Armor 44-R Hartz H4454RR Delta King 3961RR Armor 39-E ASGROW AG ASGROW AG FFR 4455RR Deltapine DPX3819RR HBK R Armor 42L Progeny 4303RR Pioneer Brand 94B Delta King 3964RR Delta King 4461RR Progeny 4401RR Pioneer Brand 94B Delta King 3968RR NK Brand S46-G Hartz H3090RR ASGROW AG NK Brand S39-Q Southern States RT4502N Southern States RT3802N Deltapine DPX3761RR ASGROW AG Delta King XTJ040RR Delta King 3862RR ASGROW AG Morsoy RT Deltapine DPX3940RR Southern States RT3799N HBK R Grand mean LSD (5%) n s n s 4 C.V. (%)

17 Table 3. Performance of Irrigated Early Planted Soybean Cultivars, Southeast Research and Extension Center, Rohwer, AR, 2002, Continued Year 1 3-Year 1 Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) Pioneer 94B Deltapine DP5110S Terral TV4890RR Progeny 4858RR ASGROW AG HBK R Progeny Terral TV4886RR Armor 47-G Morsoy RT Hartz H4884RR Morsoy RT Morsoy RT Croplan Genetics RC Pioneer Brand 94B Progeny 4932RR Delta King 4763RR Southern States RT5001N Southern States RT5302N Deltapine DP4748S Delta King 4965RR FFR 4712RR Armor AXR Croplan Genetics RC Southern States RT4902N Manokin Progeny 5250RR Deltapine SG 498RR Southern States RT ASGROW AG Hartz H5223RR FFR 4922RR Terral TVX39R Progeny 5120N Delta King 4868RR Delta King 5366RR NK Brand X248R Deltapine DP4690RR Delta King XTJ048RR Delta King 4762RR

18 Table 3. Performance of Irrigated Early Planted Soybean Cultivars, Southeast Research and Extension Center, Rohwer, AR, 2002, Continued Year 1 3-Year 1 Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) continued Progeny 5001RR NK Brand S52-U FFR 4891RR R FFR 5225RR Grand mean LSD (5%) n s n s 4 C.V. (%) Two and three year averages were calculated from the years 1999, 2000, and Soil Series...Sharkey desha silt loam Previous Crop...Grain Sorghum Row Width...19 inches Fertilizer Applied lbs./a , , 200 lbs./a , Lime Applied...None Planting Date Herbicide Application pts./a Treflan oz./a Scepter, , 1.5 pts./a Reflex, oz./a Select, , 1.5 pts./a Basagran pts./a Blazer, Irrigation Dates , , , , , , Harvest Dates...Early: Late: Precipitation (inches) April May June July August September Total Average Departure

19 Table 4. Performance of Nonirrigated Early Planted Soybean Cultivars, Burton Brothers Farm, Lafayette Co., AR, Maturity Lodging Shatter Plant Brand/Cultivar bu/a Date Score Score Ht(in) Early Maturing Cultivars (RM 4.6 or Less) Pioneer Brand 94B Armor 39-E Delta King 4461RR Terral TV4589RR Armor 44R Delta King 3964RR Deltapine DPX3940RR Morsoy RT Progeny 4303RR Deltapine DPX3819RR Delta King 3968RR Armor 42L Armor 44-R ASGROW AG FFR 4455RR NK Brand S40-R Delta King 3862RR NK Brand S39-Q Southern States RT4502N HBK R Delta King XTJ040RR Croplan Genetics RC HBK R Delta King 3961RR ASGROW AG Progeny 4401RR ASGROW AG Morsoy RT Southern States RT3802N Southern States RT3799N NK Brand S46-G Deltapine DPX3761RR ASGROW AG Pioneer Brand 94B ASGROW AG Hartz H4454RR Hartz H3090RR Grand mean LSD (5%) C.V. (%)

20 Table 4. Performance of Nonirrigated Early Planted Soybean Cultivars, Burton Brothers Farm, Lafayette Co., AR, , Continued Lodging Shatter Plant Brand/Cultivar bu/a Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) Southern States RT 5001N Deltapine DP5110S Progeny 5250RR Progeny 5120N R FFR 4891RR Pioneer 94B Morsoy RT Progeny 4932RR Southern States RT4902N Delta King XTJ048RR Croplan Genetics RC FFR 5225RR Deltapine DP4748S Manokin NK Brand X248R NK Brand S52-U Morsoy RT FFR 4712RR Delta King 4762RR FFR 4922RR ASGROW AG Delta King 4868RR Progeny 4858RR Hartz H5223RR Croplan Genetics RC Armor AXR ASGROW AG Progeny Armor 47-G Southern States RT Pioneer Brand 94B Southern States RT5302N Delta King 4763RR HBK R Delta King 4965RR Terral TV4890RR Morsoy RT Terral TV4886RR Hartz H4884RR

21 Table 4. Performance of Nonirrigated Early Planted Soybean Cultivars, Burton Brothers Farm, Lafayette Co., AR, , Continued Lodging Shatter Plant Brand/Cultivar bu/a Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) continued Deltapine SG 498RR Progeny 5001RR Terral TVX39R Deltapine DP4690RR Delta King 5366RR Grand mean LSD (5%) C.V. (%) The tests at Burton Brothers Farm is a new location for 2002, therefore 2- and 3-year averages are not available. Soil Series... Billyhaw clay Previous Crop... C o r n Row Width inches Fertilizer Applied... None Lime Applied... None Planting Date Herbicide Application pts./a Dual Magnum oz./a Scepter 70 DF, Irrigation Dates... None Harvest Dates... Early: Late:

22 Table 5. Performance of Irrigated Early Planted Soybean Cultivars, Vegetable Substation, Kibler, AR, Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Date Score Score Ht(in) Early Maturing Cultivars (RM 4.6 or Less) Deltapine DPX3940RR NK Brand S40-R Hartz H3090RR Progeny 4401RR Southern States RT3802N Pioneer Brand 94B Delta King 4461RR FFR 4455RR Armor 44-R ASGROW AG Armor 39-E Southern States RT4502N Morsoy RT HBK R ASGROW AG HBK R ASGROW AG Terral TV4589RR Southern States RT3799N Armor 44R Delta King 3968RR Delta King 3961RR ASGROW AG Croplan Genetics RC Hartz H4454RR Delta King 3964RR Morsoy RT Delta King 3862RR Deltapine DPX3819RR Pioneer Brand 94B ASGROW AG Deltapine DPX3761RR Armor 42L Delta King XTJ040RR NK Brand S39-Q NK Brand S46-G Progeny 4303RR Grand mean LSD (5%) n s 3 C.V. (%)

23 Table 5. Performance of Irrigated Early Planted Soybean Cultivars, Vegetable Substation, Kibler, AR, , Continued Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) Progeny 5250RR Morsoy RT Morsoy RT Deltapine DP4748S Armor 47-G Hartz H5223RR Delta King XTJ048RR Delta King 4965RR Delta King 4763RR Delta King 4868RR NK Brand S52-U Morsoy RT HBK R NK Brand X248R R ASGROW AG Delta King 5366RR Progeny ASGROW AG Armor AXR Deltapine DP5110S Southern States RT 5001N FFR 4922RR Manokin Southern States RT4902N Progeny 4858RR Croplan Genetics RC Pioneer Brand 94B Progeny 4932RR Croplan Genetics RC Deltapine SG 498RR Deltapine DP4690RR Terral TV4890RR FFR 5225RR Hartz H4884RR Pioneer 94B Progeny 5120N Southern States RT Southern States RT5302N FFR 4891RR

24 Table 5. Performance of Irrigated Early Planted Soybean Cultivars, Vegetable Substation, Kibler, AR, , Continued Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Date Score Score Ht(in) Late Maturing Cultivars (RM 4.7 to 5.3) continued Progeny 5001RR FFR 4712RR Terral TVX39R Delta King 4762RR Terral TV4886RR Grand mean LSD (5%) n s 4 C.V. (%) There were no data reported for 1999 and 2000, therefore 3-year averages are not available. Soil Series... Dardanelle silt loam Previous Crop... Soybean Row Width inches Fertilizer Applied... None Lime Applied... None Planting Date Herbicide Application... Tank mix of Pursuit DG70 at 40 gal./a pts./a Prowl 3.3 EC, Irrigation Dates , , , , Harvest Dates... Early: Late: Precipitation (inches) April May June July August September Total Average Departure

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26 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group IV Early Maturing Cultivars (RM 4.7 or Less) Armor 44-R Armor 44-R * * * * 73.8 * * Armor 47-G ASGROW AG ASGROW AG ASGROW AG Delta King 4461RR Delta King 4762RR Delta King 4763RR Delta King XTJ040RR Delta King XTJ044RR Delta King XTJ046RR Delta King XTJ301RR Deltapine 4748S Deltapine DP4690RR Deltapine DPX4431RR 76.1 * * * * 66.0 * * Deltapine DPX4527RR 80.5 * * * * 55.5 * * Deltapine DPX4727RR 72.8 * * * * 70.8 * * Dyna Gro 3443NRR Dyna Gro 3468NRR Garst 4312RR/STS/N Garst 4512RR/N Golden Harvest 4534RR Golden Harvest 4772RR Hartz H4454RR HBK R KS KS 4602N Morsoy RT Morsoy RT MPV 4102NRR Pioneer Brand 94B Pioneer Brand 94B Progeny 4303RR Progeny 4401RR Southern States RT446N Southern States RT4502N Terral TV4589RR Grand mean LSD (5%) C.V. (%)

27 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, , continued. Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group IV Late Maturing Cultivars (RM 4.8 or 4.9) ASGROW AG Delta Grow 4860RR Delta Grow 4950RR Delta King 4868RR Delta King 4965RR Delta King XTJ048RR Delta King XTJ302RR Delta King XTJ488RR Deltapine DPX4933RR 72.0 * * * * 56.9 * * Deltapine DPX * * * * 57.6 * * Deltapine SG498RR Dixie DT * * * * 73.8 * * DT * * * * 64.3 * * Dyna Gro 3484NRR ES Prairie RRI FFR 4900RR Garst D484RR/N Garst XC49Y * * * * 51.6 * * Garst XR49N * * * * 60.7 * * Golden Harvest 4850RR Hartz H4884RR HBK HBK 4944CX HBK R HBK R HBK R Manokin Morsoy RT Morsoy RT MPV 4802NRR NK Brand X248R Pioneer Variety Progeny 4858RR Progeny Progeny 4932RR R Southern States SS Southern States RT4902N Southern States RT Southern States RT5001N Southern States RT517N

28 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, , continued. Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group IV Late Maturing Cultivars (RM 4.8 or 4.9) continued Terral TV4886RR Terral TV4890RR Terral TVX49CN USG 7489RR USG 7499nRR Grand mean LSD (5%) C.V. (%) Maturity Group V Early Maturing Cultivars (RM 5.5 or Less) 99VPI VPI Anand Armor 52-C Armor 53-K Armor 54-Z ASGROW AG ASGROW AG ASGROW AG AXR Croplan Genetics RC Croplan Genetics RC Croplan Genetics RC Delsoy Delta Grow 5250RR Delta Grow 5350RR Delta Grow 5450RR Delta Grow Delta King 5366RR Delta King 5465RR Delta King XTJ051RR Delta King XTJ053RR Delta King XTJ055RR Delta King XTJ303RR Deltapine DP5110S Deltapine DP5414RR DT * * * * 61.5 * * Dyna Gro 3521NRR Dyna Gro 3535NRR Dyna Gro 3518NRR Dyna Gro 3543NRR

29 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, , continued. Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group V Early Maturing Cultivars (RM 5.5 or Less) continued ES Punch RR ES Ranger RR FFR 5225RR Garst 5512RRN Garst XR53N * * * * 59.5 * * Garst XRS53N * * * * 62.3 * * Golden Harvest 5492RR Hartz H5223RR Hartz H5444RR HBK R HBK R Hutcheson KS5502N Morsoy RT Morsoy RT Morsoy RT MPV 5302NRR MPV 5502NRR NK Brand S52-U Pioneer Brand 95B Pioneer Brand 95B Pioneer Brand 95B Progeny 5001RR Progeny 5120N Progeny 5250RR Progeny 5415RR Progeny 5440RR Progeny 5580RR R R S RR 71.5 * * * * 61.4 * * S RR 71.4 * * * * 51.1 * * Southern States SS5200STS Southern States RT5302N Southern States RT540N Southern States RT557N Terral TV52R Terral TV5486RR Terral TV54R USG 510NRR USG 540NRR USG 7522nRR Grand mean LSD (5%) C.V. (%)

30 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, , continued. Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group V Late Maturing Cultivars (RM 5.6 to 5.9) Armor 56-C Armor 56-J Armor 59-B ASGROW AG ASGROW AG ASGROW AG Caviness Croplan Genetics RC * * * * 58.7 * * Croplan Genetics RC * * * * 67.9 * * Delsoy Delta Grow 5630RR Delta Grow 5950RR Delta Grow 5960RR Delta King 5661RR Delta King 5668RR Delta King Delta King 5961RR Delta King Delta King XTJ057RR Delta King XTJ059RR Deltapine DP5806RR Deltapine DP5915RR Deltapine DPX5734RR 69.8 * * * * 64.0 * * DT Dyna Gro 3562NRR Dyna Gro 3583NRR Dyna Gro 3600NRR ES Marshal RR ES Trooper RR Garst XR57N * * * * 50.3 * * Garst XR59N * * * * 54.7 * * Hartz H5887RR HBK HBK HBK R HBK R HBK R Morsoy RT Morsoy RT NK Brand S59-V Pioneer Brand

31 Table 6. Yields of Maturity Groups IV and V Soybean Cultivars at All Locations, , continued. Keiser 2 Keiser Mar. Mar. Stuttgart Rohwer Burton Brand/Hybrid Irr. Non. Irr. Non. Irr. Irr. Non. Avg bu/a Maturity Group V Late Maturing Cultivars (RM 5.6 to 5.9) continued Pioneer Brand 95B Pioneer Brand 95B Progeny Progeny 5660RR Progeny 5811RR Progeny 5822RR Progeny 5900RR R R Southern States 597N Southern States RT5702N Southern States RT5999N Southern States RT6202N Terral TV5666RR Terral TV56R Terral TV58R Terral TV59R Terral TV59R Terral TVX62R UARK USG 5601T USG 570NRR USG 7582nRR Grand mean LSD (5%) C.V. (%) Keiser Irr. = Northeast Research and Extension Center, Irrigated. Keiser Nonirr. = Northeast Research and Extension Center, Nonirrigated. Mar. Irr. = Cotton Branch Station, Irrigated. Mar. Nonirr. = Cotton Branch Station, Nonirrigated. Stuttgart Irr. = Rice Research and Extension Center, Irrigated. Rohwer Irr. = Southeast Research and Extension Center - Rohwer Division, Irrigated. Burton Nonirr. = Burton Brothers Farm (Lafayette County), Nonirrigated. 2 Yields may have increased at this location because plots were end-trimmed before the plants had matured. * = Strains are tested only in Keiser Irrigated and Rohwer Irrigated tests.

32

33 Table 7. Performance of Irrigated Soybean Cultivars, Northeast Research and Extension Center, Keiser, AR, Year 3-Year Maturity Lodging Shatter Plant Brand/Cultivar bu/a Avg. Avg. Date Score Score Ht(in) Maturity Group IV Early Maturing Cultivars (RM 4.7 or Less) Armor 44-R Delta King 4763RR Morsoy RT Pioneer 94B Deltapine DPX4527RR Garst 4512RR/N Garst 4312RR/STS/N Deltapine 4748S Armor 44-R Pioneer 94B Dyna Gro 3443NRR Golden Harvest 4772RR Delta King XTJ044RR Armor 47-G ASGROW AG Hartz H4454RR ASGROW KS 4602N ASGROW AG Deltapine DPX4431RR Golden Harvest 4534RR Progeny 4401RR Delta King XTJ301RR Delta King 4461RR Delta King XTJ040RR HBK R Morsoy RT Deltapine DPX4727RR Dyna Gro 3468NRR MPV 4102NRR Deltapine DP 4690RR Southern States RT4502N KS Southern States RT446N Delta King XTJ046RR Terral TV4589RR Progeny 4303RR Delta King 4762 RR Grand mean LSD (5%) n s n s n s. C.V. (%)