Answer
Grain is a food, and food is a necessity. Necessities have inelastic demand curves. Worldwide, if supply falls, prices will increase (with a decrease in quantity).
Work Step by Step
In Kansas, other farmers (in other states) can increase production when there is a decrease in the quantity of grain. Thus, there is no price change, and Kansas farmers sell less grain at the normal price. The lower quantity of grain leads to the lower revenue for Kansas farmers.
