658 is a medium season hybrid that produces seed with extraordinarily high oil content and high yields. The oil leader in the Dakotas, Minnesota and Western sunflower growing areas. Exceptional stalk quality and high test weight.
Hybrid Type........................................................Oil Adaptability................................................Mid Season Stalk Quality................................................Excellent Standability.................................................Excellent Plant Height....................................................Medium Flowering Date*.............................................65-70 Days Days to Physiological Maturity*.....................................96 Self Compatibility...........................................Very Good Field Uniformity.............................................Very Good Drought Tolerance.................................................Good Stem Curvature Class....................................Moderate Curve Test Weight.................................................30-34 lbs. Oil Content....................................................44-48 %
Phoma.............................................................Good Verticillium Wilt............................................Resistant Sunflower Rust....................................Good Field Tolerance
Please refer to the North Dakota State Sunflower Production Guide, Ext. Bulletin Number 25, for general sunflower production guidelines, or call Mycogen Plant Sciences at 1-800-437-6666 for specific recommendations.
* Use as a relative guide only. Actual days to flower, physiological maturity and harvest will vary with planting dates , latitude and environmental conditions.