Yield Forecasting Calculator

This calculator applies to fields that have a crop that is at or past physiological maturity (i.e., at ≤ 30% grain moisture content). In order to estimate and forecast the expected yield, you will need a few sets of data that you should collect from the field as follows:

1. Walk the cropped land to ensure that the crop has even stand (not many gaps in rows or lodging)


2. Select ±5 stations/spot in the field with a representative crop stand and measure out a standard row length at each station/spot (e.g. 2 meter row lengths)


3. Harvest and shell the cobs at each station. Weigh them and get the average weight of the grain, then extrapolate the result to a hectare by comparing what the yields could be if they were gotten from a standard hectare. Record the extrapolated yield per hectare, in tons per hectare (e.g. 10 t/ha.)


4. Get the moisture content for the shelled grain as a decimal number


5. Use the calculator tabs below and enter the two sets of data (i.e. yield per hectare and moisture content) appropriately


6. Get your result in tons per hectare, in the Yield Forecast tab