Nitrogen use efficiency in Samoa
Samoa: Nitrogen use efficiency was 32.31 in 2014. ▼ Falling
Nitrogen use efficiency in Samoa, 1961–2014
Source: Our World in Data.
Analysis
Samoa recorded 32.31 for nitrogen use efficiency in 2014.
That represents a change of down 15.0% on the previous year and up 0.3% over ten years.
Over the whole period, nitrogen use efficiency in Samoa peaked at 59.46 in 1982 and was at its lowest, 9.98, in 2001.
Samoa ranks 134th of 205 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 54 years of available data.
Nitrogen use efficiency in Samoa, year by year
| Year | Value | Change |
|---|---|---|
| 1961 | 54.25 | — |
| 1962 | 54.56 | +0.6% |
| 1963 | 54.33 | -0.4% |
| 1964 | 57.92 | +6.6% |
| 1965 | 49.29 | -14.9% |
| 1966 | 49.99 | +1.4% |
| 1967 | 39.59 | -20.8% |
| 1968 | 47.34 | +19.6% |
| 1969 | 52.03 | +9.9% |
| 1970 | 44.96 | -13.6% |
| 1971 | 58.77 | +30.7% |
| 1972 | 58.69 | -0.1% |
| 1973 | 55.25 | -5.8% |
| 1974 | 59.29 | +7.3% |
| 1975 | 52.92 | -10.7% |
| 1976 | 49.41 | -6.6% |
| 1977 | 53.91 | +9.1% |
| 1978 | 46.22 | -14.3% |
| 1979 | 56.65 | +22.6% |
| 1980 | 55.56 | -1.9% |
| 1981 | 43.73 | -21.3% |
| 1982 | 59.46 | +36.0% |
| 1983 | 50.23 | -15.5% |
| 1984 | 43.45 | -13.5% |
| 1985 | 45.85 | +5.5% |
| 1986 | 44.34 | -3.3% |
| 1987 | 38.44 | -13.3% |
| 1988 | 36.82 | -4.2% |
| 1989 | 39.68 | +7.8% |
| 1990 | 34.11 | -14.0% |
| 1991 | 25.76 | -24.5% |
| 1992 | 30.35 | +17.8% |
| 1993 | 30.31 | -0.1% |
| 1994 | 29.36 | -3.1% |
| 1995 | 34.92 | +19.0% |
| 1996 | 36.47 | +4.4% |
| 1997 | 35.09 | -3.8% |
| 1998 | 36.44 | +3.8% |
| 1999 | 19.67 | -46.0% |
| 2000 | 10.74 | -45.4% |
| 2001 | 9.98 | -7.1% |
| 2002 | 32.69 | +227.6% |
| 2003 | 32.49 | -0.6% |
| 2004 | 32.2 | -0.9% |
| 2005 | 33.18 | +3.0% |
| 2006 | 33.48 | +0.9% |
| 2007 | 31.73 | -5.2% |
| 2008 | 33.92 | +6.9% |
| 2009 | 37.63 | +10.9% |
| 2010 | 37.86 | +0.6% |
| 2011 | 39.07 | +3.2% |
| 2012 | 38.53 | -1.4% |
| 2013 | 38.01 | -1.4% |
| 2014 | 32.31 | -15.0% |
Samoa compared with similar countries
- Samoa's 32.31 is below the median for upper middle income countries, which is 38.22, 85% of the median. (57 countries reporting)
- Samoa's 32.31 is below the median for East Asia & Pacific, which is 44.54, 73% of the median. (32 countries reporting)
Biggest year-on-year movements
Years where Nitrogen use efficiency in Samoa 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 |
|---|---|---|---|
| 2002 | +227.6% | 9.98 | 32.69 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 51.03 | 39.59 | 57.92 | 9 |
| 1970s | 53.61 | 44.96 | 59.29 | 10 |
| 1980s | 45.76 | 36.82 | 59.46 | 10 |
| 1990s | 31.25 | 19.67 | 36.47 | 10 |
| 2000s | 28.8 | 9.98 | 37.63 | 10 |
| 2010s | 37.16 | 32.31 | 39.07 | 5 |
Countries ranked near Samoa
More reference data data for Samoa
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.023 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.0165 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.0396 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.0396 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.077 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.0626 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.0918 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.2319 (2050)
- Emission Totals - Emissions (N2O) - Burning - Crop residues 0 (2050)
- Emission Totals - Emissions (N2O) - Agricultural Soils 0.1693 (2050)
Frequently asked questions
- What is nitrogen use efficiency in Samoa?
- Nitrogen use efficiency in Samoa was 32.31 in 2014, according to Our World in Data.
- What is the highest nitrogen use efficiency recorded in Samoa?
- The highest recorded value was 59.46 in 1982.
- What is the lowest nitrogen use efficiency recorded in Samoa?
- The lowest recorded value was 9.98 in 2001.
- How does Samoa rank for nitrogen use efficiency?
- Samoa ranks 134th out of 205 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in Samoa?
- Over the last ten years it is up 0.3%. The long-run trend across the full record is falling.
- Where does this Samoa data come from?
- The figures come from 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).