Roundup Ready soybean varieties, many with new sources of SCN resistance, make up the majority of growers' newest choices for the 2004 planting season.

The following information comes from breeders and agronomists at universities, USDA-ARS and private companies. But don't confine yourself to this list; there's more data available from seed company representatives and university and independent yield trials.

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.

Disease abbreviations are as follows: 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.

Roundup Ready

Group III

Dekalb — DKB37-51 (mid) exhibits:

  • Very high yield potential.

  • Moderate resistance to race 3 SCN, multi-race PRR resistance.

  • Excellent emergence.

Golden Harvest — H-3657RR (mid) features:

  • New source of SCN resistance (PUSCN14).

  • Good standability, excellent late-season plant health, very good drought stress tolerance.

  • Great adaptability as an early variety in fuller-season growing areas.

NC+ — 3A53RR (mid) provides:

  • SCN race 3 resistance, moderate resistance to race 14.

  • Very good stress tolerance in Rps1k PRR resistance.

  • Great emergence, uniform plant.

  • Wide adaptation from KS to So. IL.

NC+ — 3A84RR (mid-late) offers:

  • Later, larger version of NC+ 3A61RR.

  • Excellent emergence, standability.

  • Adaptability from KS to So. IL, very good stress tolerance in poor soils.

  • Rps1k PRR resistance, very good SDS tolerance, good IDC tolerance.

Asgrow — AG3905 (late) provides:

  • Excellent defensive package for no-till.

  • Race 3 SCN and multi-race PRR resistance, tolerance to BSR.

  • Excellent standability, very good emergence.

  • Protein, 36%; oil, 18.5%.

Group IV

AgVenture — AV 40J4NRR (early) features:

  • Top performance, excelling on fertile soils.

  • Very good PRR field tolerance, moderate SCN protection.

  • Excellent standability with medium-canopy, tawny plants.

Croplan Genetics — RC4013 (early) has:

  • Eastern/Western genetics.

  • Rps1k gene for PRR resistance.

  • Average PRR field tolerance, very good SDS tolerance.

  • SCN resistance to race 3 with moderate resistance to race 14.

Delta and Pine Land — DP 4331 RR (early) features:

  • High yield potential.

  • Very good lodging, shatter resistance.

  • Moderate resistance to SCN races 3 and 14.

  • Protein, 36%; oil, 21.2%.

Great Lakes Hybrids — GL4009RR (early) shows:

  • Excellent yield potential, excellent on stressed soils.

  • SCN protection, good SDS tolerance and good frogeye leaf spot protection.

  • Protein, 34.6%; oil, 18.5%.

LG Seeds — C4112NRR (early) shows:

  • Moderately tall plant.

  • SCN resistance, very good SDS tolerance.

  • Excellent scores against frogeye.

  • High yield potential in stress environments.

AgVenture — AV 46J5NRR (mid) features:

  • Higher yields than AV 6441NRR.

  • Solid race 3 SCN protection, very good frogeye and SDS tolerances.

  • Strong emergence, rapid canopy.

  • Excellent shatter resistance.

Asgrow — AG4403 (mid) offers:

  • High yield potential in conservation tillage.

  • Excellent emergence, very good standability.

  • Multi-race PRR resistance; moderate resistance to race 3 SCN; very good southern stem canker, SDS, frogeye tolerance.

  • Protein, 35.2%; oil, 20.1%.

Delta and Pine Land — DP 4724 RR (mid) exhibits:

  • High yield potential; very good lodging, shatter resistance.

  • Good performance on dry soils, excellent on light to loam soils.

  • Resistance to stem canker and SCN race 3, moderate resistance to race 14.

  • Protein, 36.6%; oil, 20.1%.

Delta King — DK 4768X RR (mid) provides:

  • Very good emergence.

  • Good standability, shatter resistance.

  • Medium-height, indeterminate plant.

  • Good SDS, SCN, frogeye resistance.

Hornbeck Seed — HBK R4623 (mid) features:

  • Excellent emergence, seed quality and plant height for early planting.

  • Resistance to PRR races 3 and 7, soybean mosaic virus, stem canker, frogeye and SCN race 3, moderate resistance to SCN race 14.

  • Yields compare to Asgrow 4403.

LG Seeds — C4444NRR (mid) offers:

  • SCN resistance; excellent tolerance to SDS, frogeye and stem canker.

  • Extremely good stress endurance.

  • Very good standability for its height.

  • Adaptability to all row widths and stress-prone soils.

Midwest Seed Genetics — GR 4752 (mid) shows:

  • Resistance to SCN race 3, moderate resistance to race 14.

  • Above-average SDS tolerance.

  • Excellent standability, emergence, stress tolerance, adaptability to all row widths.

Pioneer — 94M41 RR (mid) provides:

  • Exceptional yield potential.

  • Strong resistance to SCN race 3, multi-race PRR resistance with Rps1k gene.

  • Good IDC tolerance.

  • Protein, 35.8%; oil, 19.6%.

Pioneer — 94M40 RR/STS (mid) shows:

  • Excellent yield potential.

  • Superb resistance to SCN race 3, good tolerance to SDS.

  • Protein, 35.5%; oil, 18.9%.

Pioneer — 94M70 RR (mid-late) has:

  • Outstanding yield potential.

  • Excellent resistance to SCN race 3, multi-race PRR resistance with Rps1k gene.

  • Good SDS and IDC tolerance.

  • Protein, 35.2%; oil, 19.6%.

Syngenta — NK Brand S43-B1 (mid) offers:

  • SCN resistance (PI88788), good SDS and southern stem canker resistance, Rps1c PRR resistance with good field tolerance.

  • Good standability.

  • Protein, 36%; oil, 17%.

AgVenture — AV 49J7NRR (late) has:

  • Top yield potential, higher than AV 6482NRR and AV 6541NRR.

  • Very good emergence, seed shatter resistance.

  • SCN race 3 protection, moderate race 14 protection.

Delta and Pine Land — DP 4933 RR (late) exhibits:

  • Potential to perform well in clay soils with poor drainage or flood irrigation.

  • Resistance to stem canker, SCN race 3; moderate resistance to SCN race 14 and common root knot nematode.

  • Very good lodging, shatter resistance.

  • Protein, 36.4%; oil, 19.9%.

Delta King — DK 4967 RR (late) features:

  • Excellent emergence and yield.

  • Good standability, shatter resistance.

  • Adaptability in all soil types.

  • Resistance to SDS and SCN race 3, with moderate resistance to race 14.

LG Seeds — C4725NRR (late) offers:

  • SCN resistance, very good SDS tolerance, excellent against frogeye.

  • Very consistent yields across all environments.

  • Great adaptability to doublecrop.

MFA — Morsoy RT 4993N (late) has:

  • Medium-height plant, very good performance in stressed situations.

  • Very good field tolerance to PRR, SCN, frogeye.

  • Excellent emergence, very good performance on heavy clay soils.

Syngenta — NK Brand S49-Q9 (late) features:

  • SCN resistance (PI88788), Rps1c PRR resistance.

  • Good PRR field tolerance, tolerance to stem canker.

  • Excellent standability, well adapted to narrow rows.

  • Protein, 37%; oil, 17%.

UniSouth Genetics — USG 7482nRR (late) provides:

  • Resistance to SCN race 3; moderate resistance to race 14, SDS and frogeye.

  • Medium-height, indeterminate, tawny plant.

Group V

AgVenture — AV 50J6NRR (early) exhibits:

  • New high-yield determinate for Midsouth.

  • Resistance to stem canker, good tolerance to frogeye and SDS.

  • Good width and row fill.

Croplan Genetics — RC5003 (early) offers:

  • Southern genetic origin in RC5332 family.

  • Rps3 gene for PRR resistance, with excellent PRR field tolerance and SDS tolerance.

  • SCN resistance to race 3 with moderate resistance to 14.

  • Medium tall plant type, excellent standability.

Croplan Genetics — RC5222 (early) provides:

  • Southern genetics origin, different genetic background compared to RC5003.

  • Rps1c gene with average PRR field tolerance, excellent SDS tolerance.

  • Moderate resistance to SCN races 3 and 14.

Garst — 5212 RR/N (early) features:

  • Moderate resistance to SCN races 3 and 14, very good resistance to frogeye and SDS.

  • Resistance to stem canker, good PRR field tolerance.

  • Very good movement south for its maturity.

Golden Harvest — H-5183RR Brand (early) features:

  • SCN resistance, very good SDS tolerance and PRR tolerance, excellent stem canker tolerance.

  • Very good frogeye tolerance.

  • Wide adaptability, excellent yield potential, performs on all soil types.

Hornbeck Seed — HBK R5123 (early) offers:

  • Excellent seed quality, excellent early planting option on clay soils.

  • Resistance to stem canker, excellent PRR field tolerance.

  • Indeterminate variety with excellent emergence.

LG Seeds — C5115NRR (early) shows:

  • Rpslc resistance to PRR, resistance to SCN and RKA and RK1 species of root knot nematodes.

  • High resistance to frogeye and stem canker, tolerance to SDS.

  • Excellent standability on this moderately tall, fairly bushy plant.

  • Determinant growth habit.

Syngenta — NK Brand S50-N3 (early) exhibits:

  • SCN resistance (PI88788), tolerance to stem canker, Rps1c PRR resistance, good PRR field tolerance.

  • Good standability, well adapted to narrow rows.

  • Protein, 36%; oil, 18%.

Delta and Pine Land — DP 5634 RR (mid) provides:

  • Resistance to SCN races 1 and 3, common root knot nematode and stem canker.

  • Very good lodging, shatter resistance.

  • Medium-height, semi-bushy plant.

  • Protein, 35.6%; oil, 20.6%.

Delta King — DK 5767 RR (mid) shows:

  • Consistent yield, excellent shatter resistance.

  • Good SDS resistance, resistance to SCN race 3 and moderate resistance to race 14.

  • Excluder for chloride soils.

Garst — 5412 RR/N (mid) exhibits:

  • Resistance to stem canker and SCN race 3, moderate resistance to race 14, good resistance to frogeye and SDS, field tolerance to PRR.

  • Herbicide versatility with RR and STS features.

  • Medium-tall plant type with very good standablity.

Golden Harvest — H-5492RR Brand (mid) exhibits:

  • Excellent standability, best yields in loam soils.

  • SCN resistance, Rpslk gene for PRR resistance.

  • Very good SDS tolerance, good frogeye tolerance, susceptible to stem canker.

  • Determinate, medium-height plant suitable for all row widths and tillage practices, salt includer.

MFA — Morsoy RT 5553N (mid) features:

  • Tall plant with very good standability.

  • Very good SDS, SCN and stem canker field tolerance; good frogeye, PRR field tolerance.

  • Very good performance in wide range of soil types.

Syngenta — NK Brand S57-P1 (mid) exhibits:

  • Resistance to SCN and southern root knot nematode.

  • Medium-height plant with intermediate canopy and good standability.

  • Protein, 39%; oil, 17%.

UniSouth Genetics — USG 7553nRR (mid) provides:

  • Resistance to SDS.

  • Moderate resistance to SCN races 3 and 14, frogeye, cerocopora leaf spot.

  • Medium plant with determinate growth habit.

Delta King — DK 5967 RR (late) shows:

  • Excellent yields, works well in all row widths.

  • Excellent emergence and stress tolerance; very good standability.

  • Very good resistance to SDS, with moderate resistance to SCN races 3 and 14.

  • Medium-tall, medium-bush determinate plant.

MFA — Morsoy RT 5903N (late) has:

  • Medium-tall plant with very good standability.

  • Good field tolerance to SDS and stem canker; very good field tolerance to SCN and frogeye.

  • Moderate field tolerance to aerial leaf blight.

  • Very good performance on heavy clay soils.

MFA — Morsoy RT 5773N (late) features:

  • Good field tolerance to SCN, PRR and cercospora leaf blight.

  • Very good field tolerance to frogeye and stem canker.

  • Medium-height plant that performs very well in a wide range of soils types.

UniSouth Genetics — USG 7582nRR (late) features:

  • SCN race 3 resistance, moderate resistance to SCN race 14.

  • Moderate resistance to SDS and Cercospora leaf spot, resistance to frogeye.

  • Protein, 34.5%; oil, 20.8%.

Group VIII

Clemson University — AGS 825 RR (mid) offers:

  • Maturity 3-4 days earlier than Prichard, with good seed yield potential, standability, lodging resistance.

  • Resistance to SCN race 3, moderate resistance to southern root-knot nematode.

  • Protein, 37%; oil, 16.6%. (Distributed through Mixon Seed).

Conventional

Group IV

Golden Harvest — H-4151 Brand (early) features:

  • SCN resistance with excellent PRR tolerance, excellent SDS tolerance.

  • Tall plants with good standability, excellent stress tolerance.

  • Adaptability to fields with stressed, variable soils.

  • Very high yield potential in high-fertility fields.

Group V

UniSouth Genetics — USG 5002T (early) offers:

  • Resistance to stem canker, frogeye and SDS; shatter resistance.

  • White flower with tawny pubescence.

  • Protein, 36.5%; oil, 20.8%.

University of Arkansas — Ozark(early) provides:

  • Resistance to stem canker, frogeye, soybean mosaic virus; moderate resistance to SDS and root knot nematode.

  • High yield potential, good standability, resistance to shattering.

  • Great adaptation to Arkansas and Mississippi Delta region.

  • Protein and oil comparable to that of Hutcheson and Manokin.