Fertilisers are used because harvesting crops or removing livestock depletes soil nitrates and phosphates, and fertilisers replenish these nutrients to increase productivity.
- nitrates and phosphates are lost from farms when plants are harvested or livestock is removed - nitrate and phosphate concentration in the soil decreases - fertilisers increase nitrate and phosphate concentration - increasing productivity
| Front | Why are fertilisers used? |
|---|---|
| Back | - nitrates and phosphates are lost from farms when plants are harvested or livestock is removed - nitrate and phosphate concentration in the soil decreases - fertilisers increase nitrate and phosphate concentration - increasing productivity |
Tags: nutrient_cycles
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