This simulation allows you to adjust input levels, input costs, and crop revenues while growing a virtual cabbage crop. By experimenting with different levels of inputs, costs, and revenues, you can determine the optimum or economic yield for each economic situation. Try a few simulations on your own (click the help button in the simulation for more info) before attempting the exercises at the bottom of this page.
Set the refresh levels to 0% and run the simulation. What happens to the crop? Record your yield.
Now set fertility to a refresh level of 90% and the moisture refresh level to 0%. Does this improve growth? Why or why not?
Set the fertility refresh level at 80% and vary the moisture level. Try moisture levels of 95%, 90%, 80%, 70%, 60%, 50%, and 40%. Which level results in the highest yield? Which results in the highest profit?
Set both the fertility and moisture refresh levels at 80%. Run this simlution several times, adjusting the prices of inputs and the crop. What prices maximise farmer profits? Under what conditions does the farmer suffer a loss?
What is the optimum refresh level for fertilizer when the moisture refresh level is set at 80%, the unit price of the crop is $60, the unit price of water is $2 and the unit price of fertilizer is $20?