Biological fixation — Cropland nitrogen per unit area in Sierra Leone
Sierra Leone: Biological fixation — Cropland nitrogen per unit area was 21.23 kg/ha in 2023. ▼ Falling
Biological fixation — Cropland nitrogen per unit area in Sierra Leone, 1961–2023
Source: Food and Agriculture Organization of the United Nations. Measured in kg/ha.
Analysis
Sierra Leone recorded 21.23 kg/ha for biological fixation — cropland nitrogen per unit area in 2023.
That represents a change of up 16.3% on the previous year and up 19.7% over ten years.
Over the whole period, biological fixation — cropland nitrogen per unit area in Sierra Leone peaked at 29.24 kg/ha in 1967 and was at its lowest, 15.37 kg/ha, in 2020.
That places Sierra Leone 23rd out of 191 countries with data for 2023, putting it in the top quarter.
The long-run direction has been consistently falling across the 63 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 26.86 kg/ha | 25.6 kg/ha | 29.24 kg/ha | 9 |
| 1970s | 27.47 kg/ha | 26.19 kg/ha | 29.07 kg/ha | 10 |
| 1980s | 24.11 kg/ha | 21.42 kg/ha | 27.13 kg/ha | 10 |
| 1990s | 23.44 kg/ha | 21.13 kg/ha | 24.99 kg/ha | 10 |
| 2000s | 17.97 kg/ha | 16.07 kg/ha | 20.42 kg/ha | 10 |
| 2010s | 17.82 kg/ha | 16.2 kg/ha | 22.34 kg/ha | 10 |
| 2020s | 19.34 kg/ha | 15.37 kg/ha | 22.52 kg/ha | 4 |
Countries ranked near Sierra Leone
More environment data for Sierra Leone
- Standard Deviation 0.232 °C (2025)
- Temperature change 1.28 °C (2025)
- Other paper and paperboard, not elsewhere specified — Import value 2,329 1000 USD (2024)
- Other paper and paperboard, not elsewhere specified — Import quantity 186 t (2024)
- Other paper and paperboard — Export value 307 1000 USD (2024)
- Other paper and paperboard — Export quantity 410 t (2024)
- Other paper and paperboard — Import value 2,804 1000 USD (2024)
- Other paper and paperboard — Import quantity 578 t (2024)
- Printing and writing papers — Import value 2,032 1000 USD (2024)
- Printing and writing papers — Import quantity 2,006 t (2024)
Frequently asked questions
- What is biological fixation — cropland nitrogen per unit area in Sierra Leone?
- Biological fixation — cropland nitrogen per unit area in Sierra Leone was 21.23 kg/ha in 2023, according to Food and Agriculture Organization of the United Nations.
- What is the highest biological fixation — cropland nitrogen per unit area recorded in Sierra Leone?
- The highest recorded value was 29.24 kg/ha in 1967.
- What is the lowest biological fixation — cropland nitrogen per unit area recorded in Sierra Leone?
- The lowest recorded value was 15.37 kg/ha in 2020.
- How does Sierra Leone rank for biological fixation — cropland nitrogen per unit area?
- Sierra Leone ranks 23rd out of 191 countries with data for 2023.
- Is biological fixation — cropland nitrogen per unit area rising or falling in Sierra Leone?
- Over the last ten years it is up 19.7%. The long-run trend across the full record is falling.
- Where does this Sierra Leone data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Biological fixation — Cropland nitrogen per unit area. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 63 observations, free to reuse under CC BY-NC-SA 3.0 IGO (FAO).
About this data
The Cropland Nutrient balance domain contains information on the flows of nitrogen, phosphorus, and potassium from mineral fertilizer, manure applied, atmospheric deposition, crop removal, and biological fixation over cropland and per unit area of cropland. The flows are aggregated to total inputs and total outputs, from which the overall nutrient balance and nutrient use efficiency on cropland are calculated. Statistics are disseminated in units of tonnes and in kg/ha, as appropriate. Nutrient use efficiency is expressed as a fraction (%).