With the exception of a handful of food-grade/conventional soybeans, Roundup Ready varieties are the list of new selections for the 2003 planting season.
The following information, from breeders and agronomists at universities, USDA-ARS and private companies, highlights the best each has to offer. But there's a lot of ground left to be covered. Talk with your seed company representatives and check out the latest yield trial data in your location before pulling your wallet out of your pocket.
The following pureline variety choices are divided by maturity group, moving from early to mid- to late maturities within each group. Note that all the varieties listed are Roundup Ready except, of course, those boxed and labeled as conventional. A few are also STS-resistant, but they will be identified.
A number of diseases mentioned are listed by abbreviation. They are: phytophthora root rot (PRR), soybean cyst nematode (SCN), sudden death syndrome (SDS), sclerotinia white mold (SWM) and brown stem rot (BSR). Iron deficiency chlorosis is shortened to IDC. Note, too, that protein and oil data are based at 13% moisture.
For additional varietal choices, log onto SoybeanDigest.com.
Dekalb Genetics — DKB005-51 (mid) features:
Very good emergence; average standability.
Thin plant type with relatively short height.
The earliest Roundup Ready variety available.
Excellent for short seasons, cool conditions.
Protein, 36%; oil, 18%.
Peterson Farms Seed — 03005RR (mid) exhibits:
Medium-thin plant type, well-suited for solid seeding.
Great yield potential, excellent for Northern areas.
Excellent standability.
IDC resistance adequate for all but worst areas.
Gold Country Seed — GCS 1300RR (late) features:
Premiere yield for maturity.
Superior IDC tolerance in NDSU and U of M trials.
Excellent standability.
Clear hila, small seeds.
North Dakota State University — RG200RR (early) exhibits:
Excellent IDC tolerance.
Good recovery from stunting caused by water-saturation on heavy clay soils.
Good PRR field tolerance.
Peterson Farms Seed — 0303RR (early) offers:
Rps1k gene for multirace PRR resistance.
Good performance in light and heavy soils; excellent branching.
Above-average IDC resistance, adequate for all but worst areas.
Yield comparable to longer-season varieties.
Gold Country Seed — GCS 2309RR (late) offers:
Top yields on marginal soils.
Excellent standability.
Easy combining with very good shattering score.
Kruger Seed — K-070 RR (late) features:
Exceptional stress tolerance.
Excellent SWM protection.
Very good iron efficiency.
Suitability to a wide range of soils and environments.
Excellent standability.
South Dakota State University — SD1081RR (late) exhibits:
High yield potential; good IDC tolerance.
Excellent yield; resistance to PRR.
Protein, 34.8%; oil, 17.4.
Contact: Foundation Seed Stocks Division, 605-688-5418.
Mycogen Seeds — 5B101RR (early) offers:
Excellent IDC tolerance; superior lodging resistance.
Strong emergence vigor.
Very good tolerance to SWM; medium-tall variety.
Good performance in full-season areas.
Croplan Genetics — RT1447 (mid) has:
Outstanding IDC tolerance.
Tall plant type with very good SWM tolerance.
Great standability.
Good performance even in sandy conditions.
ProfiSeed, Inc. — PS 4153RR (mid) provides:
A very durable standing.
Very high yields for a mid-Group I; excellent IDC and BSR tolerance.
Improved standability over PS 4160RR with strong branching tendencies.
Protein, 36.8%; oil, 18.4%.
Kaltenberg Seeds — KB173RR (mid- to late) has:
K-gene for PRR resistance.
Very good SWM and BSR protection; high yields.
Medium-tall, medium bush plant; well adapted to no-till.
Excellent emergence and standability.
Latham Seed — 418RR (late) provides:
An early sister to Latham 417RR with an improved disease package.
K-gene for PRR resistance; great IDC tolerance; resistant to BSR.
Superior SWM tolerance, (1.9 on a 1-to-5 scale).
Excellent standability and emergence; handles stress.
Stine Seed Co. — S1962-4 (late) features:
Excellent emergence; very good standability.
Rps1c multirace PRR resistance; resistance to SCN races 3 and 14.
A “must-plant” where SCN and IDC are concerns.
Protein, 35.9%; oil, 19.4%.
Asgrow Seed — AG2105 (early) exhibits:
PRR resistance (Rps1k); average tolerance to race 25.
Very good IDC tolerance.
Excellent standability; very good emergence;excellent yield potential.
Protein, 35%; oil, 19%.
Garst Seed — 2332RR (early) offers:
Consistent, high performance in this early Group.
Medium height, medium-bushy plant.
Excellent SWM tolerance.
Protein, 35.6%; oil, 17.5%.
Great Lakes Hybrids — GL2301RR (early) offers:
GL2300RR replacement with better stress tolerance, more yield.
Rps1k gene for PRR.
Excellent tolerance to BSR and IDC.
Stands up great to SWM.
Excellent emergence; very solid standability.
Growmark (FS HiSOY) — HS 2325 (early) features:
BSR resistance; good resistance to SWM.
Very good standability and yield consistency.
Good PRR field tolerance.
Protein, 36.2%; oil, 18.7%.
Knewtson Seed Co. — ADV 2135R (early) has:
Excellent tolerance to IDC and to PRR with Rk gene.
Great tolerance to BSR and SWM; excellent standability.
Medium height, bushy plant, adapted to soils with disease, stand problems.
Protein, 35.6%; oil, 18.8%.
Knewtson Seed Co. — ADV 2172NR (early) exhibits:
Excellent tolerance to IDC, BSR, SWM and PRR with Rc gene.
Excellent standability; great emergence.
Medium plant height; adaptable to troubled soils.
SCN resistance to races 3 and 14.
Kruger Seed — K-221 RR/SCN, (early) provides:
SCN resistance (developed from PI 88788 background).
Exceptional stress tolerance; excellent emergence.
Good to very good IDC protection; very good protection against PRR.
Not for use in fields with history of BSR.
Latham Seed — 497RR (early) offers:
Terrific yields; great defensive package.
K-gene for PRR resistance.
IDC tolerance (1.8 on a 1-to-5 scale).
Medium-tall, bush-type plant; does very well on western IA light soils.
ProfiSeed, Inc. — PS 4202RR (early) offers:
An early version of PS 4211RR; medium-tall with excellent stands.
All-around disease package, including SWM tolerance.
High yields in all row widths.
Protein, 34.5%; oil, 20%.
Croplan Genetics — RT2502 (mid) features:
Outstanding yields on productive soil types.
Good IDC tolerance.
Strong PRR tolerance.
Solid standability.
Dekalb Genetics — DKB24-51 (mid) features:
Rps1c gene for multirace PRR; resistance to race 3 SCN.
Very good tolerance to BSR; good tolerance to SDS.
Excellent emergence; very good standability.
Protein, 36%; oil, 18%.
Kaltenberg Seeds — KB241RR (mid) provides:
A Roundup Ready version of conventional variety KB241.
Fast emergence; high yields.
Medium-height, medium-bush plant.
No-till adaptation; very good standability ratings.
Mycogen Seeds — 5B242RR (mid) exhibits:
Improved tolerance to drought and heat stress.
East-to-west adaptation.
Field tolerance to PRR (Rps1k); resistance to BSR.
High-yield replacement for 5240RR.
Ottilie Seed — RO 8255RR (mid) offers:
Very good SWM and BSR tolerance; K-gene resistance to PRR.
Very good emergence, standability, stress tolerance and shatter resistance.
Medium tall with upright branching; good performance at all row widths.
Protein, 36.9%; oil, 18.5%.
Asgrow Seed — AG2705 (mid- to late) features:
SCN resistance (moderate resistance to races 3 and 14).
Resistance to PRR (Rps1c), above-average tolerance to race 25.
Excellent standability; very good emergence; excellent yield potential.
Protein, 37%; oil, 18%.
Dairyland Seed — DSR297RR (late) shows:
Excellent field tolerance to PRR, plus Rps1k resistance.
Very good tolerance to BSR, SDS, SWM and IDC.
Excellent standability and emergence.
Good adaptation for top yields in IN and OH where strong PRR tolerance and resistance are needed.
Golden Harvest — H-2824RR (late) features:
Resistance to SCN race 3 and moderate resistance to race 14; excellent SDS and PRR tolerance.
Very good seed quality; excellent emergence and early vigor.
Excellent drought stress tolerance; good standability.
Stable yields across many tillage practices, soil types.
LG Seeds — C2883R (late) offers:
Medium height, moderately branching profile.
Resistance to PRR with the Rps1k gene; good tolerance to BSR, SWM, SDS and IDC.
Superior emergence and vigor; excellent standability.
Great stress tolerance; high yields in most-productive situations.
NC+ Hybrids — 2A98RR (late) holds:
A higher-yielding version of NC+ 2A97RR; uniform plant type, few green stems.
Medium-tall plant height even in tough soils.
Better east-west adaptation than NC+ 2A97RR.
Excellent performance in all yield environments.
NC+ Hybrids — 2A92RR (late) has:
SCN resistance to race 3 and moderate resistance to 14; Rps1c PRR resistance.
Excellent standability.
Medium plant size, well-adapted to all row widths.
Best performance in eastern IA, IL; works well even in non-cyst environments.
Syngenta Seeds — S28-W2 (late) exhibits:
Rps1k type PRR resistance.
Excellent emergence; very good lodging resistance.
Medium plant height with intermediate canopy type.
Wide adaptation to various soil types, row spacing, tillage systems.
Protein, 34%; oil, 19%.
Garst Seed — 3135RR (early) provides:
High yields.
Wide area of adaptation, moves east to west.
Very good disease package; Rps1k resistance to PRR.
Protein, 34.6%; oil, 17.9%.
Great Lakes Hybrids — GL3007RR (early) features:
Two bu/acre more yield than parent (GL3002RR).
Rps1k gene for excellent tolerance to PRR.
Very good BSR tolerance; good tolerance to SDS.
Very good standability; excellent emergence.
Growmark (FS HiSOY) — HS 3226 (early) exhibits:
Resistance to SCN, derived from PI 88788.
BSR and multirace PRR resistance.
Good SDS resistance.
Excellent yield consistency and stress tolerance.
Ottilie Seed — RO 8310RR (early) features:
K-gene resistance to PRR.
Exceptional top-end yield potential.
Very good emergence, standability, stress tolerance and shatter resistance.
Very good SDS tolerance.
Protein, 35.2%; oil, 19.3%.
Pioneer Hi-Bred Int'l — 93B09 RR (early) shows:
Excellent yield potential.
Outstanding field emergence and standability.
Very good BSR tolerance; good tolerance to IDC.
Multirace PRR resistance (Rps1k gene).
Stewart Seeds — SB3360R (early) offers:
Good PRR tolerance.
Good SDS tolerance.
High yield, wide adaptation.
Excellent for no-till.
Golden Harvest — H-3383RR (early- to mid) offers:
SCN resistance to race 3 and moderate resistance to race 14.
Excellent emergence and stress tolerance; good early vigor; good standability.
Very good tolerance to SDS and PRR.
Superior yield in SCN- and non-SCN-infested soils.
Dairyland Seed — DSR340RR (mid) features:
Excellent PRR field tolerance; very good tolerance to BSR, SDS and SWM.
Excellent resistance to SCN race 3 and moderate resistance to race 14.
Excellent standability and emergence.
Medium height and plant canopy; adaptation to stressful and high-yield environments.
Pioneer Hi-Bred Int'l — 93B68 RR (mid) provides:
Excellent yield potential.
Strong SDS tolerance; multirace PRR resistance (Rps1k gene).
Very good field emergence; excellent standability.
Very good BSR tolerance.
Syngenta Seeds — S37-N4 (mid- to late) features:
Resistance to SCN (PI 88788 type); Rps1c type PRR resistance.
Moderate tolerance to SDS.
Excellent emergence; wide adaptation to various soil types, row spacing, tillage systems.
Protein, 36%; oil, 17%.
LG Seeds — C3944NRR (late) provides:
Medium-tall plants with thin-line growth habit.
SCN resistance; very good SDS tolerance; PRR resistance with Rps1c gene.
High yield potential; good standability.
Good performance under stress and on marginal soils.
MFA Inc. — Morsoy RT 3601N (late) features:
Very good field tolerance to PRR, BSR and SDS.
Medium height, bushy plant type.
Good performance in all row spacings.
Stewart Seeds — SB3999R (late) provides:
Tall intermediate plant type.
Excellent choice for no-till.
Good resistance to SCN.
Excellent SDS tolerance.
Good stress tolerance.
MFA Inc. — Morsoy RT 4201N (early) offers:
Medium-height, bushy plant; performs very well in all row spacings.
Excellent choice for no-till.
Excellent emergence.
Excellent SCN race 3 field tolerance; very good field tolerance to frogeye leaf spot.
Stine Seed Co. — S4882-4 (late) features:
Excellent emergence; outstanding yields.
Very good PRR tolerance; good frogeye leaf spot tolerance.
Resistance to SCN race 3 and moderate resistance to race 14.
Protein, 36.8%; oil, 18.1%.
| Region | Protein (%) | Oil (%) |
|---|---|---|
| W. Corn Belt | 34.05 | 18.71 |
| E. Corn Belt | 35.36 | 19.31 |
| Midsouth | 36.56 | 18.98 |
| Southeast | 36.17 | 18.97 |
| Eastern | 36.48 | 18.95 |
| National Avg. | 34.99 | 18.99 |
University of Minnesota — MN0601SP (mid) features:
Special-purpose variety with high protein levels (5-7% above average); good standability.
Rps1c gene for resistance to PRR.
Yellow hilum; smaller-than-average seed size.
Above-average plant height; good standability.
Protein, 41.5; oil, 14.8%.
South Dakota State University — Spink (mid- to late) offers:
High yield potential.
Good emergence, lodging resistance and shattering scores.
PRR resistance; good IDC tolerance.
Protein: 34.8%; oil, 18.3%.
Contact: Foundation Seed Stocks Division, 605-688-5418.
University of Minnesota — MN1102SP (early) offers:
Large-seeded food type variety with yellow hilum; seed size of about 20-21 grams/100 seeds or 2,150-2,250 seeds/lb.
Rps1 gene for resistance to PRR.
Medium height; good standability.
Competitive yield to grain-type varieties of like maturity.
Protein, 36%; oil, 19.9%.
Ohio State University — Ohio FG3, (mid- to late) offers:
Food-grade variety with yellow (clear) hilum.
Very good resistance to PRR (Rps1k and Rps3 genes).
Partial resistance to sclerotinia root rot.
Large seed (2,090 seeds/lb).
Acceptable soymilk yield and solids content in tofu production.
Protein, 38%; oil, 17%.
USDA/ARS, OARDC — Stalwart (mid) offers:
Semidwarf variety with Rps1k gene for PRR resistance.
Irrigated yields (80-100 bu/acre).
Specific adaptation to high-yield environments.
Pairing with drought-tolerant varieties in site-specific farming.
Solid seeding at 300,000 seeds/acre.
Contact Ohio Foundation Seeds: 740-893-2501.
USDA/ARS, OARDC — APEX (mid- to late) provides:
Semidwarf variety with Rps1k gene for PRR resistance.
Irrigated yields (80-100 bu/acre).
Specific adaptation to high-yield environments.
Pairing with drought-tolerant beans in site-specific farming.
Solid seeding at 300,000 seeds/acre.
Contact Ohio Foundation Seeds: 740-893-2501.
Kansas State University — KS4202 (early) group IV features:
Resistance to PRR race 7.
Excellent standability; good emergence.
Medium height, intermediate line plant shape.
Good tolerance to drought and heat stress.
Protein, 37.2; oil, 17.2%.
Kansas State University — KS4602N (mid) offers:
Resistance to SCN race 3 and stem canker.
Excellent standability and emergence.
Medium height, intermediate-line plant shape.
Excellent yield potential in wide or narrow rows.
Protein, 37.5%; oil 17.1%.