Multiple choice

What is the correct sequence of crop rotation to increase soil fertility?

  1. Barley, wheat, pea, potato

  2. Barley, pea, wheat, potato

  3. Potato, pea, wheat, potato

  4. Wheat, potato, barley, pea

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Barley, pea, wheat, potato is the correct sequence for soil fertility. Barley is a cereal that doesn't deplete soil heavily. Pea (a legume) fixes atmospheric nitrogen through rhizobium bacteria, enriching the soil. Wheat can then use this nitrogen, and potato is a heavy feeder that benefits from the improved soil. Other sequences don't optimize this nitrogen contribution.

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