Nitrogen use efficiency in Guam
Guam: Nitrogen use efficiency was 93.5% in 2014. ▲ Rising
Nitrogen use efficiency in Guam, 1961–2014
Source: Lassaletta et al. (2014) – processed by Our World in Data. Measured in %.
Analysis
In 2014, nitrogen use efficiency in Guam stood at 93.5%.
Compared with earlier readings it is down 16.9% on the previous year and down 50.3% over ten years.
Over the whole period, nitrogen use efficiency in Guam peaked at 198.3% in 1996 and was at its lowest, 52.3%, in 1963.
Guam ranks 33rd of 205 countries on this measure, in the top quarter.
The long-run direction has been consistently rising across the 54 years of available data.
Nitrogen use efficiency in Guam, year by year
| Year | % | Change |
|---|---|---|
| 1961 | 52.6% | — |
| 1962 | 70.2% | +33.4% |
| 1963 | 52.3% | -25.5% |
| 1964 | 83.3% | +59.2% |
| 1965 | 77.4% | -7.0% |
| 1966 | 84.9% | +9.7% |
| 1967 | 72.3% | -14.8% |
| 1968 | 77.3% | +6.9% |
| 1969 | 83.4% | +7.8% |
| 1970 | 55.0% | -34.0% |
| 1971 | 71.9% | +30.7% |
| 1972 | 71.3% | -0.9% |
| 1973 | 70.4% | -1.3% |
| 1974 | 62.5% | -11.1% |
| 1975 | 61.2% | -2.2% |
| 1976 | 86.4% | +41.2% |
| 1977 | 82.3% | -4.7% |
| 1978 | 73.5% | -10.8% |
| 1979 | 72.0% | -1.9% |
| 1980 | 65.5% | -9.2% |
| 1981 | 65.1% | -0.5% |
| 1982 | 66.6% | +2.3% |
| 1983 | 71.0% | +6.6% |
| 1984 | 70.2% | -1.2% |
| 1985 | 71.9% | +2.5% |
| 1986 | 69.9% | -2.7% |
| 1987 | 75.5% | +7.9% |
| 1988 | 59.2% | -21.6% |
| 1989 | 141.1% | +138.3% |
| 1990 | 162.7% | +15.3% |
| 1991 | 184.3% | +13.3% |
| 1992 | 175.2% | -5.0% |
| 1993 | 162.1% | -7.5% |
| 1994 | 174.1% | +7.3% |
| 1995 | 185.3% | +6.5% |
| 1996 | 198.3% | +7.0% |
| 1997 | 195.2% | -1.5% |
| 1998 | 195.5% | +0.2% |
| 1999 | 191.1% | -2.2% |
| 2000 | 187.0% | -2.2% |
| 2001 | 183.7% | -1.8% |
| 2002 | 184.3% | +0.3% |
| 2003 | 185.9% | +0.9% |
| 2004 | 188.0% | +1.2% |
| 2005 | 188.8% | +0.4% |
| 2006 | 190.0% | +0.6% |
| 2007 | 189.2% | -0.4% |
| 2008 | 189.6% | +0.2% |
| 2009 | 166.2% | -12.3% |
| 2010 | 175.3% | +5.5% |
| 2011 | 175.0% | -0.2% |
| 2012 | 115.6% | -34.0% |
| 2013 | 112.5% | -2.6% |
| 2014 | 93.5% | -16.9% |
Guam compared with similar countries
- Guam's 93.5% is above the median for high income countries, which is 36.0%, 2.6× the median. (69 countries reporting)
- Guam's 93.5% is above the median for East Asia & Pacific, which is 44.5%, 2.1× the median. (32 countries reporting)
Biggest year-on-year movements
Years where Nitrogen use efficiency in Guam 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 |
|---|---|---|---|
| 1989 | +138.3% | 59.2% | 141.1% |
| 1964 | +59.2% | 52.3% | 83.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 72.6% | 52.3% | 84.9% | 9 |
| 1970s | 70.7% | 55.0% | 86.4% | 10 |
| 1980s | 75.6% | 59.2% | 141.1% | 10 |
| 1990s | 182.4% | 162.1% | 198.3% | 10 |
| 2000s | 185.3% | 166.2% | 190.0% | 10 |
| 2010s | 134.4% | 93.5% | 175.3% | 5 |
Countries ranked near Guam
- 30 Burkina Faso 95.9% compare
- 31 Martinique 94.6% compare
- 32 Saint Vincent and the Grenadines 94.4% compare
- 34 Hungary 93.0% compare
- 35 Chad 87.6% compare
- 36 Ireland 86.9% compare
More reference data data for Guam
- Emission Totals - Emissions (CO2eq) from CH4 (AR5) - IPCC Agriculture 0.0012 (2050)
- Emission Totals - Emissions (N2O) - Burning - Crop residues 0 (2050)
- Emission Totals - Emissions (N2O) - Agricultural Soils 0 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - IPCC Agriculture 0.004 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Crop Residues 0.0037 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Agricultural 0.0037 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Burning - Crop 0.0003 (2050)
- Emission Totals - Emissions (CH4) - IPCC Agriculture 0 (2050)
- Emission Totals - Emissions (CH4) - Burning - Crop residues 0 (2050)
- Emission Totals - Direct emissions (N2O) - IPCC Agriculture 0 (2050)
Frequently asked questions
- What is nitrogen use efficiency in Guam?
- Nitrogen use efficiency in Guam was 93.5% in 2014, according to Lassaletta et al. (2014) – processed by Our World in Data.
- What is the highest nitrogen use efficiency recorded in Guam?
- The highest recorded value was 198.3% in 1996.
- What is the lowest nitrogen use efficiency recorded in Guam?
- The lowest recorded value was 52.3% in 1963.
- How does Guam rank for nitrogen use efficiency?
- Guam ranks 33rd out of 205 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in Guam?
- Over the last ten years it is down 50.3%. The long-run trend across the full record is rising.
- Where does this Guam 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.