environment hard MCQ

Which of the following soil conservation methods involves planting different crops in a planned sequence on the same land?

  1. Strip cropping
  2. Crop rotation
  3. Contour ploughing
  4. Mulching

Answer: Crop rotation

Crop rotation improves soil fertility, breaks pest cycles, and reduces erosion by alternating crops with different nutrient needs and root structures.

Topic Soil Conservation and Land Degradation
Exam Relevance UPSC