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Glossary

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Ear Flex

Ear flex is a measure of the ability of the corn cob to grow when conditions are optimum and/or populations are less-than-ideal.  The ear can flex lengthwise (L), or in overall diameter (G), or both (L/G).

L = Length, G = Girth

Ear Placement

The placement of the ear on the stalk of a corn plant is dependent on several factors including planting date, row width, growing conditions, and above all, genetics. L = low on the stalk, M = medium height on the stalk, H = high on the stalk.

Emergence

Emergence is the ability of the seedling to emerge based on speed and strength in less-than-optimal conditions

Emergence scores are often obtained through a laboratory procedure that primarily reflects hypocotyl length. This procedure can be misleading since some soybeans have short hypocotyls, therefore, score poorly in this test, but do emerge quite well when planted shallow. The emergence scores presented in the Agronomic Information Guide are designed to reflect the ability of a soybean to emerge under field conditions.

Eye Spot

A foliar disease occurring in the northern United States during cool, wet weather. Numerous round-to-oval spots up to 1/2 inch in diameter are characteristic of this disease. Infected areas have tan-to-cream centers, and are surrounded by a yellowish halo. The upper leaves of the plant may wither and die prematurely, late in the season. The fungus overwinters in corn debris, on or near the soil surface.