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    • Question

      The Rice-Wheat cropping system of the Indo-Gangetic

      plains is highly productive but suffers from declining factor productivity due to which key reason?
      A Genetic erosion Correct Answer Incorrect Answer
      B Soil salinity Correct Answer Incorrect Answer
      C Nutrient mining and imbalance Correct Answer Incorrect Answer
      D High labor wages Correct Answer Incorrect Answer

      Solution

      Continuous rice-wheat cropping without balanced fertilization leads to depletion of nutrients like micronutrients and secondary nutrients (e.g., Zn, S), lowering productivity over time. This is termed as “declining factor productivity.”

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