This map shows the overall suitability of this crop in the state of Illinois.
Overall Suitability Map
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Brassica napus var. napus
Synonyms: B. campestris napus; B. napus annua; B. napus napus annua

Common Name(s): Spring rape; Swede rape
Family: Brassicaceae
Growth Habit: Annual
Growing Days: 80 to 90 (days)
Abs.Max=106° (F)    Opt.Max=77° (F)
Opt.Min=50° (F)    Abs.Min=41° (F)
Precipitation: 20 to 39 (in.)
Winter Minimum: 21° (F)
Soil pH: 6.5 to 7.6
Soil Texture/Type: Medium to light textures
Soil Drainage: Well
Photoperiod Response: Long day and day neutral
Light Intensity: Bright to clear
Sunny days and cool nights favorable. Planted April-June. High temperature during flowering period is detrimental. Does not endure ponding.
Sclerotinia, Rhizoctonia, Cercospora, Anthrachose, Powdery Mildew
Fuel - industrial oil, Poison - mammals


Geographical Origin:
Only cultivated
Metric Units

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Last Modified: October 17, 2012
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