Corn Production Overview

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Corn Production Overview

• Dr. Ron Heiniger
• Department of Crop Science
• North Carolina State University

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Investigations into CORN Growth and Development
R.W. Heiniger Vernon G. James Center North
Carolina State University
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The Standards of the Investigation

• Mid to Late Season Hybrid in North Carolina 16
  to 20 Leaves
• 60 days to silking and 115 to 120 days to
  maturity
• Environmental conditions can lengthen time
  between vegetative stages but will shorten time
  between reproductive stages

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V3 Three Leaf Stage
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V6 Growing Point Differentiation
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V9 Nine Leaf Stage
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V15 Fifteen Leaf Stage
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V18 Eighteen Leaf Stage
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VT Tassel
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VT Tassel
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R2 Blister 10 to 14 days after silking
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R3 Milk 18 to 22 days after silking
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R4 Dough 24 to 28 days after silking
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R5 Dent 35 to 42 days after silking
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Corn earworm
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European corn borer
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Time of Glyphosate Application on RR
Corn.Average of 6 locations, NC.
2- to 3.5-inch weeds. Parker, York, and
Jordan. 2006. Weed Technol. 20564-570.
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Anthracnose
Gray leaf spot
Southern corn leaf blight
Maize chlorotic dwarf virus
Stalk rots
Maize dwarf mosaic virus
Fusarium
Aspergillus flavus
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