Corn Stat Summary
Plant Spacing: 4" (101 mm)
Row Spacing: 24-30" (609-762 mm)
Planting Depth: 1/2" (12 mm)
Plants Per Person: 6
Soil Temperature: 65-85°F (18-29°C)
Days to Emergence: 7-10
Recommended Soil PH: 6.0-6.8
Earliest Outdoor Planting: After Last Frost
Can direct seed outdoors
Can seed indoors
Corn is a warm season crop that needs deep, well-drained, fertile soil, pH 6.0 to 6.8 and consistent, plentiful moisture. You can begin direct seeding when soil temperatures reach over 60 degrees F. Plant seeds 1/2 inch deep in cool moist soil and 1 inch in warmer, dryer climates. Because corn is wind pollinated, plant seeds in blocks of 4 rows; rows should be 24 to 30 inches apart. Sow seeds every 4 inches and cover with soil or sifted compost.
Mulch with compost or composted manure to help retain moisture and control weeds. Corn plants need watered regularly and deeply. Until the corn begins to tassel, spray foliage with a a high nitrogen fertilizer every 7 to 14 days. If the plant begins to look dark green, reduce the amount of fertilizer used.
Harvesting and Storing Corn
Begin to harvest corn when kernels are full and release a milky liquid when punctured with a fingernail; ear silks begin to dry and turn brown. Hand pick the ears with a quick downward motion followed by a twisting pull. Ears should be cooled as quickly as possible and stored at 34 degrees F with at least 95% humidity.
Corn Insect and Disease Information
Corn earworms can destroy cornstalks; planting early can help to avoid them. Corn borers can be controlled with an application of Rotenone-Pyrethrin prior to the appearance of the silk. To help prevent corn diseases use a 3 year crop rotation and remove old stalks in the fall.
Corn Yield Information
No yield information for Corn.
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