Laterite soil in India is rich in which of the following? 1. Calcium 2. Nitrogen 3. Phosphate 4. Potash

Which one of the following is found in appreciable amount in Laterite soil in India?

Which of the following statements regarding laterite soils of India is correct?

Which one of the following crop enriches the Nitrogen content in soil?

In which one of the following areas in India , the problem of soil erosion is critical?

Which of the following is concerned with soil?