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Relative Maturity of Various Field Crops

Below is listed the average days to physiological maturity of many crops grown in North Dakota. Early killing frost plus extreme high temperatures at flowering stages are the two factors most limiting yields of late planted crops.

Seeding to Physiological Maturity or Swathing Stage (Days)

Barley 70-85 Soybean 105-120
Oats 82-98 Sunflower 90-115
Hard Red Spring Wheat 83-98 Dry Bean 85-110
Durum Wheat 85-100 Proso Millet 70-90
Flax 90-100 Buckwheat 70-80
Corn 100-120 Sugarbeet Frost
Rapeseed (Canola) 85-105 Triticale 75-85
Mustard 85-100 Lentils 80-90

Time required for maturity varies with variety or hybrid, seeding date, geographic region, and available growing degree days. A shortage of growing degree days can increase days required for maturity. Corn, soybean, sunflower and millet are especially sensitive. Relative maturities for major crop hybrids and varieties are listed in the respective NDSU variety performance circulars.

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