Below is a diagram of one of the tertially practices that are carried out in land preparation. Study it and answer the questions below
![F4T1AgriP1Q17](https://www.easyelimu.com/images/form_4_past_papers/Form_4_term_1_opener_2021/agri/F4T1AgriP1Q17.PNG)
- Identify the tertially practice shown above.
- Give four reasons for carrying out the above practice.
- Apart from the above practice name any other two tertiary practices that are carried out in a farm