PDE Q35

Sandy soil is very hard to cultivate because it has large particles and does not retain water or nutrients well. It dries out quickly, has poor fertility, and requires frequent irrigation and fertilization to support crop growth.

• Option A: Alluvial
  Incorrect. Alluvial soil is fertile, easy to work with, and highly suitable for agriculture.

• Option B: Red
  Incorrect. Red soil has moderate fertility but can be improved with fertilizers. It is not the hardest to cultivate.

• Option C: Black
  Incorrect. Black soil is moisture-retentive and suitable for cotton and other crops, though it can be heavy and sticky when wet.

• Option D: Sandy
  Correct. Due to low water retention and nutrient content, sandy soil is the most difficult to cultivate.