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Boron should not be applied to alfalfa the year proceeding corn and it should not be applied to the seedbed as it can damage germinating seeds. Other than boron, micronutrient deficiencies in alfalfa are rare in northern Illinois. Consult the Illinois Agronomy Handbook, available at Extension offices and on-line at www. aces. uiuc. edu/iah, for more information.
The online Interactive Illinois Agronomy Handbook also has a corn yield calculator in the second chapter. It is one of the best pre-harvest calculators, but the downside is that you must take your wireless computer to the field or bring the ear and kernel counts back to the computer.