Final answer:
Crop rotation is a strategic agricultural practice to enhance soil fertility and manage pests naturally. A 3-year crop rotation plan can optimize crop growth and soil health with a sequence of different crops over time.
Explanation:
Crop rotation is a planned sequence of different crops on the same field over time to improve soil health and productivity while managing pests naturally. In a 3-year crop rotation programme with soya beans, yam, and maize, you could plant soya beans in year 1, yam in year 2, and maize in year 3, then repeat.
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