All Regions

N4H521 CL


"Multi-state data shows N4H521 CL delivering an average hybrid yield of 115% over the trial mean and 42.6% oil."

N4H521 CL

N4H521 CL is the fullest season high oleic hybrid in the Nuseed lineup and it yields big. The oil profile combined with a nice black seed color ensures multiple market options. An excellent fit for South Dakota, the High Plains and Texas, this hybrid will help a grower succeed with its outstanding yield potential.


If you’re looking for more information about our products, please visit our resources section where you can find annual seed trial data, product guides, herbicide information and our annual Nuseed Succeed Magazine.  

Sunflower Seed Market Options​

Primary Market: High Oleic Crush

Secondary Market Options: Bird Food 


Seed Treatment

Nuseed hybrids are treated with fungicide and insecticide seed treatment to protect your seed investment N4H521.

Management Recommendations

• Recommended planting rate: 18,000-23,000 plants per acre

Seed Characteristics​

Yield for Maturity: 9

Test Weight: 8

Oil Content: 8

Plant Height: 7


Rating Scale 1=Poor, 9=Excellent
Plant Height Scale 1=Shortest, 9=Tallest

Seed Agronomics​

Emergence: 8

Drought Tolerance: 8

Uniformity at Flowering: 7

Dry Down: 6

Late Season Plant Health: 8

Stalk Rating: 7

Root Rating: 6


Rating Scale 1=Poor, 9=Excellent


Step up to the performance of the Clearfield Production System for sunflowers. Powered by Beyond® herbicide, Clearfield can take your sunflower production to the next level of weed-control performance in the field and improve your bottom line. Clearfield is the only complete herbicide-tolerant sunflower system offering residual grass and broadleaf weed control.

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