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This map shows the overall suitability of this crop in the state of Illinois.
Overall Suitability Map
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Dioscorea alata
Synonyms:

Common Name(s): Greater yam; Chinese yam
Family: Dioscoreaceae
Growth Habit: Func. Annual/Biennial/Per
Invasiveness: Noxious weed:FL
Growing Days: 220 to 300 (days)
Temperature:
Abs.Max=40° (C)    Opt.Max=32° (C)
Opt.Min=22° (C)    Abs.Min=15° (C)
Precipitation: 100 to 200 (cm.)
Winter Minimum: 9° (C)
Soil pH: 5.5 to 6.5
Soil Texture/Type: Light to medium textured soils
Soil Drainage: Well
Photoperiod Response: Short day
Light Intensity: Bright to clear
Comments:
Tropical crop. Prefers deep soils of high fertility.
Diseases:
Anthrachose, Cercospora
Uses:
Environ. - ornamental, Food - vegetable, Food - starch
Woodiness:
Herbaceous
Climate:
Tropical-rainy
Geographical Origin:
Widely cultivated, Asia, Pantropics
 
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Last Modified: March 15, 2021
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