Which of the following statements are correct?
(i) Water logging increases the amount of salt in the soil that reduces soil fertility.
(ii) 2, 4-D, MCPA and butachlor are common weedicides.
(iii) Leguminous crops (like pea and beans) cannot be grouped in combination with cereals (like wheat and rice) under mixed cropping as both use large amount of nitrogen from the soil.
(iv) Manures provide specific nutrients to the soil.
(v) Paddy, maize, cotton and groundnut are examples of kharif crops while wheat, gram, pea and mustard are examples of rabi crops.

Options

A. (i), (iv) and (v) only
B. (ii), (iii), (iv) and (v) only
C. (i), (ii) and (v) only
D. (i),(ii),(iii) and (iv) only

Explanation

To determine which statements are correct, we will analyze each statement one by one:

1. **Statement (i)**: "Water logging increases the amount of salt in the soil that reduces soil fertility."
- **Analysis**: Water logging occurs when excess water accumulates in the soil, which can lead to the dissolution and upward movement of salts. This accumulation of salts can indeed reduce soil fertility, making it difficult for plants to grow.
- **Conclusion**: This statement is **true**.

2. **Statement (ii)**: "2, 4-D, MCPA and butachlor are common weedicides."
- **Analysis**: 2,4-D, MCPA, and butachlor are indeed commonly used herbicides (weedicides) that help control unwanted plants (weeds) in agricultural fields.
- **Conclusion**: This statement is **true**.

3. **Statement (iii)**: "Leguminous crops (like pea and beans) cannot be grouped in combination with cereals (like wheat and rice) under mixed cropping as both use large amounts of nitrogen from the soil."
- **Analysis**: Leguminous crops have the ability to fix nitrogen in the soil through their root nodules, which can benefit the soil and other crops. They can be effectively grown with cereals, which utilize nitrogen, creating a balanced cropping system.
- **Conclusion**: This statement is **false**.

4. **Statement (iv)**: "Manures provide specific nutrients to the soil."
- **Analysis**: Manures are organic fertilizers that provide a wide range of nutrients to the soil, rather than specific nutrients. They improve soil health and fertility overall.
- **Conclusion**: This statement is **false**.

5. **Statement (v)**: "Paddy, maize, cotton and groundnut are examples of kharif crops while wheat, gram, pea and mustard are examples of rabi crops."
- **Analysis**: Kharif crops are indeed sown during the rainy season (monsoon), and the examples given (paddy, maize, cotton, groundnut) are correct. Rabi crops are sown in winter, and the examples given (wheat, gram, pea, mustard) are also correct.
- **Conclusion**: This statement is **true**.

**Final Summary of Statements**:
- Statement (i): True
- Statement (ii): True
- Statement (iii): False
- Statement (iv): False
- Statement (v): True

Thus, the correct statements are (i), (ii), and (v).