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PA-PIPE Crop Models

Corn Phenology | Soybean Phenology

Corn Phenology Model

The Corn Phenology model was developed following the Hanway staging system and uses the longest maturing hybrid per grid, but the specific maturity class may vary from grid to grid. The model depicts development of crop sown early in the planting season. (See the Iowa State University publication on the web at: http://www.extension.iastate.edu/hancock/info/corn.htm for information on Hanway staging for corn).

Model Key

Corn Phenology (Corn Phenology in key) shows corn stages using the Hanway staging system. Each major stage from planting to harvest is represented by a unique color.

Corn Phenology Model Product

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Soybean Phenology Model

The Soybean Phenology model was developed following the modified Hanway staging system and uses the longest maturing hybrid per grid, but the specific maturity class may vary from grid to grid. The model depicts development of crop sown early in the planting season.

Model Key

Soybean Phenology (Soybean Phenology in key) shows soybean stages using a modified Hanway staging system. Each major stage from planting to harvest is represented by a unique color.

Although soybeans continue vegetative growth after reaching the R1 (first bloom) stage, only the reproductive stages of the crop are shown after R1.

Soybean Phenology Model Product

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