Nitrogen use efficiency in Sao Tome and Principe
Sao Tome and Principe: Nitrogen use efficiency was 178.6% in 2014. ▼ Falling
Nitrogen use efficiency in Sao Tome and Principe, 1961–2014
Source: Lassaletta et al. (2014) – processed by Our World in Data. Measured in %.
Analysis
Sao Tome and Principe recorded 178.6% for nitrogen use efficiency in 2014. That is the highest value across all 54 years on record.
The figure is up 79.0% on the previous year and up 67.0% over ten years.
Over the whole period, nitrogen use efficiency in Sao Tome and Principe peaked at 178.6% in 2014 and was at its lowest, 69.4%, in 1990.
That places Sao Tome and Principe 4th out of 205 countries with data for 2014, putting it in the top 10%.
The long-run direction has been consistently falling across the 54 years of available data.
Nitrogen use efficiency in Sao Tome and Principe, year by year
| Year | % | Change |
|---|---|---|
| 1961 | 160.2% | — |
| 1962 | 164.2% | +2.5% |
| 1963 | 141.3% | -14.0% |
| 1964 | 157.9% | +11.8% |
| 1965 | 155.7% | -1.4% |
| 1966 | 144.8% | -7.0% |
| 1967 | 142.8% | -1.4% |
| 1968 | 128.1% | -10.3% |
| 1969 | 126.3% | -1.4% |
| 1970 | 120.6% | -4.5% |
| 1971 | 114.7% | -5.0% |
| 1972 | 113.1% | -1.4% |
| 1973 | 118.3% | +4.7% |
| 1974 | 122.5% | +3.5% |
| 1975 | 87.4% | -28.6% |
| 1976 | 79.8% | -8.7% |
| 1977 | 89.8% | +12.4% |
| 1978 | 84.9% | -5.5% |
| 1979 | 93.4% | +10.1% |
| 1980 | 74.2% | -20.6% |
| 1981 | 74.4% | +0.3% |
| 1982 | 76.6% | +3.0% |
| 1983 | 82.8% | +8.1% |
| 1984 | 74.0% | -10.6% |
| 1985 | 74.8% | +1.0% |
| 1986 | 74.0% | -1.1% |
| 1987 | 72.9% | -1.4% |
| 1988 | 73.3% | +0.5% |
| 1989 | 69.9% | -4.7% |
| 1990 | 69.4% | -0.8% |
| 1991 | 81.2% | +17.1% |
| 1992 | 90.4% | +11.3% |
| 1993 | 93.0% | +2.8% |
| 1994 | 86.9% | -6.5% |
| 1995 | 85.4% | -1.8% |
| 1996 | 101.6% | +19.0% |
| 1997 | 105.9% | +4.3% |
| 1998 | 87.8% | -17.2% |
| 1999 | 87.9% | +0.2% |
| 2000 | 105.4% | +19.9% |
| 2001 | 109.4% | +3.8% |
| 2002 | 108.5% | -0.8% |
| 2003 | 100.5% | -7.4% |
| 2004 | 107.0% | +6.5% |
| 2005 | 113.6% | +6.2% |
| 2006 | 116.3% | +2.4% |
| 2007 | 105.8% | -9.1% |
| 2008 | 109.4% | +3.4% |
| 2009 | 100.2% | -8.4% |
| 2010 | 103.2% | +3.0% |
| 2011 | 101.9% | -1.3% |
| 2012 | 104.6% | +2.7% |
| 2013 | 99.8% | -4.6% |
| 2014 | 178.6% | +79.0% |
Sao Tome and Principe compared with similar countries
- Sao Tome and Principe's 178.6% is above the median for lower middle income countries, which is 55.2%, 3.2× the median. (45 countries reporting)
- Sao Tome and Principe's 178.6% is above the median for Sub-Saharan Africa, which is 62.2%, 2.9× the median. (45 countries reporting)
Biggest year-on-year movements
Years where Nitrogen use efficiency in Sao Tome and Principe changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2014 | +79.0% | 99.8% | 178.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 146.8% | 126.3% | 164.2% | 9 |
| 1970s | 102.4% | 79.8% | 122.5% | 10 |
| 1980s | 74.7% | 69.9% | 82.8% | 10 |
| 1990s | 88.9% | 69.4% | 105.9% | 10 |
| 2000s | 107.6% | 100.2% | 116.3% | 10 |
| 2010s | 117.6% | 99.8% | 178.6% | 5 |
Countries ranked near Sao Tome and Principe
- 1 Solomon Islands 649.0% compare
- 2 Equatorial Guinea 506.2% compare
- 3 Malaysia 262.1% compare
- 5 Kazakhstan 175.7% compare
- 6 Syria 175.2% compare
- 7 Benin 171.0% compare
More reference data data for Sao Tome and Principe
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0038 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.006 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.01 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.0003 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.01 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0126 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.014 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.0319 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.0601 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.0015 (2050)
Frequently asked questions
- What is nitrogen use efficiency in Sao Tome and Principe?
- Nitrogen use efficiency in Sao Tome and Principe was 178.6% in 2014, according to Lassaletta et al. (2014) – processed by Our World in Data.
- What is the highest nitrogen use efficiency recorded in Sao Tome and Principe?
- The highest recorded value was 178.6% in 2014.
- What is the lowest nitrogen use efficiency recorded in Sao Tome and Principe?
- The lowest recorded value was 69.4% in 1990.
- How does Sao Tome and Principe rank for nitrogen use efficiency?
- Sao Tome and Principe ranks 4th out of 205 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in Sao Tome and Principe?
- Over the last ten years it is up 67.0%. The long-run trend across the full record is falling.
- Where does this Sao Tome and Principe 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.