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Wilmington College 2005 

  Cereal Grain Crops

Common Name:

 Corn

Latin Name:

Zea mays

Variety:

 Ohio Yellow Popcorn

Crop Origin:

 Central America

Type:

 Grain

Date Planted:

 19 May, 2005

Growth Stages in Ohio

Corn OH Yellow Popcorn Jan 1 06.JPG (3749683 bytes) Corn OH yellow Popcorn feb 6 06.JPG (2062835 bytes) Corn OH Yellow Pop March 4 06.JPG (3687357 bytes) Corn OH Yellow Popcorn Apr 4 06.JPG (3960573 bytes) Corn OH Yellow popcorn May 5 06.JPG (3403465 bytes) Corn OHyellow 3 June 05.JPG (3174301 bytes)
January February March April May June
Corn Ohio Yellow 1 July 05.JPG (3815498 bytes) Corn OH yellow popcorn 7aug05.JPG (2816461 bytes) Corn OH yellow popcorn 3 sep 05.JPG (2986282 bytes) Corn OH yellow popcorn 1 oct 05.JPG (3095390 bytes) Corn OH Yellow popcorn 4 Nov 05.JPG (3585125 bytes) Corn OH yellow popcorn 2 dec 05.JPG (3813220 bytes)
July August

September

October November December

Donated by USDA, ARS, NCRPIS

Cultivation in Ohio

Primary Uses:

Grain

 Planting:

Plant between April 15 and May 10 in Ohio.  Plant to a depth of 1.5 to 2 inches. 

 Seeding Rate:

Actual seeding rate depends on the variety, soil type and yield goals.  Most varieties yield best between 22,000-30,000 plants/acre.  A general figure often used is 26,000 plants/acre.

Fertility:

Soil pH should be at least 6.5 or above.  Corn uses large amounts of Nitrogen.  The total amount applied depends on yield goals and overall management.  For 120 bu/acre yield, about 140 lbs. N/acre should be applied.  For 160 bu/acre yield, about 190 lbs N/acre should be applied.  Depending on economics of application, it is best to apply N in split applications, with a small amount at planting and the remainder sidedressed before the 10 week after planting.  Application of P and K should follow soil test recommendations.

Insects:

Insects causing problems at germination include seedcorn maggots, cutworms, grubs, and wireworms.  The European Corn Borer affects some fields from growth stage V8 and on.  Corn rootworm may also cause problems evidenced by lodging at growth stage V12.  Japanese Beetles may clip silks causing lowered pollination.  Aphids rarely cause economic losses.  Second brood European Corn Borers can be a problem by feeding on developing ears.  The most economical control is selection of resistant varieties.

Diseases:

Common Stalk Rots include Anthracnose, Giberella and Fusarium.  Leaf Blights include Northern Corn Leaf Blight, Grey Leaf Spot and Stewart's Wilt.  Virus diseases affecting corn include Maize Dwarf Mosaic and Maize Chlorotic Dwarf.  Ear and stalk rots occurring commonly in corn include Giberella, Diplodia and Fusarium.  The most economical control is selection of resistant varieties.

Harvest:

Shell corn with a combine when seed is mature and dry.  All field shelled corn with more than 15 percent moisture must be dried for safe storage.

Comments:

Popcorn is intended for consumption after popping only.  Popping quality is determined by the chemical structure of the pericarp which contains the pressure buildup during heating until the kernel explodes to form popcorn.      TCS

Identification

Leaf:

Corn OH yellow popcorn leaf1.JPG (1835288 bytes)  Corn_ OH_ Yellow_ leaf1.JPG (1637924 bytes)

Flower:

 Corn_ OH_ Yellow_ tassel.JPG (1904204 bytes)

Seeds:

Corn_ Ohio_ Yellow_ popcorn_ seeds.JPG (2722799 bytes) Corn_OH_Yellow_Popcorn_Ear.jpg (1113440 bytes)

Distribution:

cornmap.gif (16783 bytes)

More Information

Links:

http://ohioline.osu.edu/e2567/
http://www.wyandotpopcornmus.com/