Nitrogen use efficiency in Sierra Leone
Sierra Leone: Nitrogen use efficiency was 78.9% in 2014. ▼ Falling
Nitrogen use efficiency in Sierra Leone, 1961–2014
Source: Lassaletta et al. (2014) – processed by Our World in Data. Measured in %.
Analysis
The most recent figure for nitrogen use efficiency in Sierra Leone is 78.9%, measured in 2014.
The figure is up 25.1% on the previous year and up 51.2% over ten years.
Over the whole period, nitrogen use efficiency in Sierra Leone peaked at 79.8% in 1964 and was at its lowest, 49.6%, in 2005.
Sierra Leone ranks 45th of 205 countries on this measure, in the top quarter.
The long-run direction has been consistently falling across the 54 years of available data.
Nitrogen use efficiency in Sierra Leone, year by year
| Year | % | Change |
|---|---|---|
| 1961 | 71.3% | — |
| 1962 | 79.5% | +11.4% |
| 1963 | 77.4% | -2.6% |
| 1964 | 79.8% | +3.1% |
| 1965 | 74.1% | -7.1% |
| 1966 | 72.2% | -2.6% |
| 1967 | 67.3% | -6.8% |
| 1968 | 71.3% | +6.0% |
| 1969 | 72.3% | +1.4% |
| 1970 | 67.4% | -6.7% |
| 1971 | 65.9% | -2.2% |
| 1972 | 67.6% | +2.5% |
| 1973 | 66.4% | -1.7% |
| 1974 | 65.9% | -0.8% |
| 1975 | 64.8% | -1.7% |
| 1976 | 65.1% | +0.5% |
| 1977 | 64.5% | -0.9% |
| 1978 | 63.3% | -1.9% |
| 1979 | 58.4% | -7.8% |
| 1980 | 59.3% | +1.5% |
| 1981 | 58.3% | -1.7% |
| 1982 | 62.3% | +7.0% |
| 1983 | 63.4% | +1.7% |
| 1984 | 71.4% | +12.6% |
| 1985 | 61.1% | -14.5% |
| 1986 | 63.6% | +4.2% |
| 1987 | 63.7% | +0.1% |
| 1988 | 62.0% | -2.7% |
| 1989 | 59.7% | -3.6% |
| 1990 | 59.0% | -1.3% |
| 1991 | 61.6% | +4.4% |
| 1992 | 59.2% | -3.8% |
| 1993 | 56.2% | -5.1% |
| 1994 | 57.0% | +1.4% |
| 1995 | 57.9% | +1.7% |
| 1996 | 60.2% | +3.9% |
| 1997 | 60.2% | -0.0% |
| 1998 | 56.8% | -5.6% |
| 1999 | 56.6% | -0.4% |
| 2000 | 59.1% | +4.5% |
| 2001 | 54.6% | -7.7% |
| 2002 | 50.1% | -8.3% |
| 2003 | 54.6% | +9.1% |
| 2004 | 52.2% | -4.5% |
| 2005 | 49.6% | -4.9% |
| 2006 | 51.9% | +4.8% |
| 2007 | 57.4% | +10.5% |
| 2008 | 56.8% | -1.0% |
| 2009 | 62.6% | +10.2% |
| 2010 | 64.1% | +2.4% |
| 2011 | 63.4% | -1.1% |
| 2012 | 59.5% | -6.1% |
| 2013 | 63.1% | +6.0% |
| 2014 | 78.9% | +25.1% |
Sierra Leone compared with similar countries
- Sierra Leone's 78.9% is above the median for low income countries, which is 62.0%, 1.3× the median. (24 countries reporting)
- Sierra Leone's 78.9% is above the median for Sub-Saharan Africa, which is 62.2%, 1.3× the median. (45 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 73.9% | 67.3% | 79.8% | 9 |
| 1970s | 65.0% | 58.4% | 67.6% | 10 |
| 1980s | 62.5% | 58.3% | 71.4% | 10 |
| 1990s | 58.5% | 56.2% | 61.6% | 10 |
| 2000s | 54.9% | 49.6% | 62.6% | 10 |
| 2010s | 65.8% | 59.5% | 78.9% | 5 |
Countries ranked near Sierra Leone
More reference data data for Sierra Leone
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0238 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.4498 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.5935 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.12 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.5935 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0797 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.044 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 1.91 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 2.72 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.6534 (2050)
Frequently asked questions
- What is nitrogen use efficiency in Sierra Leone?
- Nitrogen use efficiency in Sierra Leone was 78.9% in 2014, according to Lassaletta et al. (2014) – processed by Our World in Data.
- What is the highest nitrogen use efficiency recorded in Sierra Leone?
- The highest recorded value was 79.8% in 1964.
- What is the lowest nitrogen use efficiency recorded in Sierra Leone?
- The lowest recorded value was 49.6% in 2005.
- How does Sierra Leone rank for nitrogen use efficiency?
- Sierra Leone ranks 45th out of 205 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in Sierra Leone?
- Over the last ten years it is up 51.2%. The long-run trend across the full record is falling.
- Where does this Sierra Leone data come from?
- The figures come from Lassaletta et al. (2014) – processed by Our World in Data, published as part of Nitrogen use efficiency. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 54 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Nitrogen use efficiency (NUE) is the ratio between nitrogen inputs and output. A NUE of 40% means that only 40% of nitrogen inputs are converted into nitrogen in the form of crops.