2011-2013 Organic Soybean OVT Results

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Organic Soybean Official Variety Trials (OVT) were planted on organically managed land at research stations over the last three years. These trials provide good information on non-GM soybeans performance under organic conditions. Organic soybean seed is not available in varieties (or Maturity Groups) that perform well in the southeast, and organic farmers in the state are limited to choosing conventional (non-GM) varieties.

Plots were planted in 36 to 38 inch rows at a population of 165,000 seed/acre. All sites had a history of amendment with either chicken litter or compost and lime. All soils were tested before planting for a sufficiency of macro and micronutrients and pH. The only amendment added during soybean growth was manganese sulfate at the Kinston location where deficiencies are routine.

Overall yields are likely higher for all varieties than what is typical for organic farmers. Our protocol is to allow weeds to compete and reduce yield as long as possible, but fields are hand rogued each August to prepare for harvest with a research combine.

Varieties with letter-number names are still in breeding programs, and not yet available to the public, but are near being released.

Group V, Early

Genotype Yield (bu/acre)
NCC07-7506

52.8*

Osage

48.7*

N02-7002

48.0*

JTN-5503

47.8*

NCC06-148

47.5*

JTN-5203

47.4

Jake

47.1

Fowler

45.9

NCC06-339

44.9

NCC05-1336

44.1

Hutcheson

43.4

NCC05-456

43.1

NCC05-1168

43.0

NCC05-1261

41.6

*not significantly different from highest yield

Maturity Group V, late

Genotype Yield (bu/A)

NCC06-579

48.8*

NC Miller

48.0*

NCC06-2188

47.5*

NCC04-1555

47.3*

Osage

47.1*

NC Tinius

47.0*

Jake

45.4

Fowler

43.0

*not significantly different from highest yield

Maturity Group 6

Genotype Yield (bu/A)
NC Roy

53.8*

NCC07-8138

53.3*

NCC04-619

50.6*

NCC05-1543

49.6*

N05-7353

47.5*

N08-145

46.4

N05-7375

44.4

NCC06-1090

43.8

N06-7023

39.8

*not significantly different from highest yield

Maturity Group VII / VIII

Genotype Yield (bu/A)
NCC06-899

53.6*

NCC06-929

51.7*

N05-7462

49.4*

Woodruff

49.2*

N7002

49.0*

N05-7452

48.5*

N06-7564

47.9*

N05-7396

46.4

NC Raleigh

46.3

NCC04-624

45.8

N7003CN

45.6

N8001

43.8

N05-7432

41.3

*not significantly different from highest yield

Updated on Mar 20, 2014
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