A peanut farmer decides that she can make more money growing cotton and so plants her fields with cotton. The terrific yield of her fields is so encouraging that she continues to plant cotton for several more years, but each year her cotton yield
decreases. What advice could you give her to increase her yield?
A) Use a little less fertilizer each year since the soil is becoming overfertilized.
B) Plant peanuts in alternate years since this crop rotation will provide extra nitrogen to the soil.
C) Leave the fields unplanted in alternate years so the soil can recover.
D) Plant a different crop every year since different crops deplete different soil nutrients.
Answer: B
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