New tool available to determine replanting decisions

A “Corn Replanting Decision Tool” has been released as part of the University of Illinois’ FAST series of Microsoft Excel spreadsheets. Mathematical functions in this tool estimate yields from the original and replanted stands. Estimated yields, along with cost and crop insurance information, then are used to calculate net income from replanting.

This tool is part of the Planting Decision Model, which can be accessed from the FAST section of farmdoc . A direct link to the model's download page is available here.

Inputs into the tool are divided into five categories:

1. Normal yield and price exceptions.
2. Original planting information – inputs on the original planting date and actual stand from initial planting are used to estimate a yield from the original planting.
3. Replant information – inputs on the replant date and seeding rate are used to estimate yield if the field is replanted.
4. Replant cost – inputs on seed price and other expenses are used to estimate replant cost.
5. Crop insurance replant payment – farm-level crop insurance provides a per acre replant payment under certain circumstances.

Functions provided by Emerson Nafziger, professor in Crop Sciences at the University of Illinois, are used to estimate yields from the original and replanted stands.

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