Q. Which of the following statements correctly explain why laterite soils are not considered fertile?

1. They are coarse grained and non-retentive of moisture
2. They lack humus
3. They are highly acidic in nature
4. They have excess iron

Select the correct option from the codes given below:
Answer: 1, 2, 3 & 4
Notes: Laterite soils are coarse grained, non-retentive of moisture, lack humus, are highly acidic, and contain excess iron. All these characteristics reduce fertility as they limit water and nutrient retention, reduce nutrient availability, and can cause nutrient toxicity. Thus, statements 1, 2, 3, and 4 are all correct.