114 RM


W8550 Overview

  • Reliable, outstanding yields across soil types and environments
  • Impressive drought tolerance
  • Sturdy plant with very good stalk strength
  • Early to black layer for maturity

Grain Characterization

Laboratory-identified grain trait(s) for this hybrid family.


None Applicable

Download PDF Info For W8550


Very good southern movement. Works well on tough timber soils. Avoid poorly-drained soils. Semi-determinate ear responds to high populations.

  • Best under crop rotation
  • Conventional or no-till
  • Medium to medium-high populations

Soil Adaptability

Rating Soil Category
Light Soils

LOW CEC (<10); OM <1.5%; low water-holding capacity; non-irrigated sand; marginal productivity; drought prone.

Medium Soils

CEC 11–18; OM 1.5-3.5%; well-drained; silt loam; high productivity.

Heavy Soils

High CEC (>18); OM >3.5%; poorly-drained; high clay content; gumbo; muck.

Poorly-Drained Soils

Soils that have the potential to remain saturated for prolonged periods; side hill seeps; gumbo muck.

Plant Physiology and Health

Trait(s) CONV
GDUs To Black Layer E, 2710
Days to Pollination 77
GDUs to Pollination E, 1350
Early Vigor 7
Early Canopy -
Plant Height MS
Stalk Strength 8
Root Strength 7
Green Snap Resistance 7
Drought Tolerance 9
Staygreen 7

Ear/Grain Characteristics

Ear Flex SF
Ear Length 7
Ear Height M
Kernel Rows 16-18
Test Weight 8
Drydown 7

Pest/Disease Ratings

Goss' Wilt Tolerance 5
Gray Leaf Spot Tolerance 7
NLB, Race O, Tolerance 7
Stewarts Leaf Blight Tolerance -
Anthracnose Tolerance 6

Placement Considerations

Continuous Corn R
Rimsulfuron Tolerance W

Numerical ratings are based on comparisons among Wyffels hybrids of like maturity where 1 = Low, 5 = Avg, and 9 = High expressions of a trait