Answer:
Sustainability of soil fertility includes maintaining the nutrient's concentration in soil. Some of the effective mechanism to ensure sustainability of soil fertility in an area are as following:
- Maintaining the process of crop rotation to ensure the fertility of the soil.
- Growing legumes for nitrogen fixation of soil rather than chemicals.
- Performing leaching in the crop rooting zone that will maintain flow of water and nutrients and minimize nutrient loss.
- Use of nitrogen-15 isotopic technique that determines the amount of nitrogen fixed in the soil and provides data on how much more nitrogen is required.
- The carbon-13 isotope technique is used to measure the contribution of different types of crops in the fertility of soil.
Hence, by taking the above measures soil sustainability can be maintained.
