Nitrogen use efficiency in Saint Lucia
Saint Lucia: Nitrogen use efficiency was 10.0% in 2014. ◆ Volatile
Nitrogen use efficiency in Saint Lucia, 1961–2014
Source: Lassaletta et al. (2014) – processed by Our World in Data. Measured in %.
Analysis
Saint Lucia recorded 10.0% for nitrogen use efficiency in 2014.
That represents a change of down 16.4% on the previous year and down 70.4% over ten years.
Over the whole period, nitrogen use efficiency in Saint Lucia peaked at 49.3% in 1964 and was at its lowest, 2.4%, in 1997.
Saint Lucia ranks 184th of 205 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Nitrogen use efficiency in Saint Lucia, year by year
| Year | % | Change |
|---|---|---|
| 1961 | 45.0% | — |
| 1962 | 48.7% | +8.2% |
| 1963 | 47.7% | -2.0% |
| 1964 | 49.3% | +3.4% |
| 1965 | 45.6% | -7.5% |
| 1966 | 38.5% | -15.8% |
| 1967 | 29.5% | -23.2% |
| 1968 | 23.9% | -19.0% |
| 1969 | 19.9% | -16.6% |
| 1970 | 15.2% | -23.7% |
| 1971 | 14.9% | -2.2% |
| 1972 | 14.4% | -3.4% |
| 1973 | 12.7% | -11.5% |
| 1974 | 12.7% | +0.1% |
| 1975 | 11.3% | -10.9% |
| 1976 | 11.0% | -2.9% |
| 1977 | 9.0% | -18.4% |
| 1978 | 17.3% | +92.9% |
| 1979 | 14.3% | -17.3% |
| 1980 | 22.2% | +54.9% |
| 1981 | 14.1% | -36.6% |
| 1982 | 11.3% | -19.7% |
| 1983 | 14.0% | +23.9% |
| 1984 | 11.9% | -15.1% |
| 1985 | 11.7% | -1.9% |
| 1986 | 15.4% | +32.4% |
| 1987 | 14.1% | -8.9% |
| 1988 | 16.6% | +17.9% |
| 1989 | 8.8% | -46.7% |
| 1990 | 11.7% | +32.3% |
| 1991 | 8.0% | -31.5% |
| 1992 | 8.6% | +7.4% |
| 1993 | 9.0% | +4.4% |
| 1994 | 4.4% | -51.2% |
| 1995 | 3.5% | -19.3% |
| 1996 | 2.6% | -26.3% |
| 1997 | 2.4% | -9.6% |
| 1998 | 7.1% | +201.5% |
| 1999 | 8.0% | +12.8% |
| 2000 | 6.6% | -17.2% |
| 2001 | 5.5% | -16.5% |
| 2002 | 47.5% | +757.8% |
| 2003 | 36.6% | -22.9% |
| 2004 | 33.6% | -8.1% |
| 2005 | 25.7% | -23.6% |
| 2006 | 31.1% | +21.2% |
| 2007 | 26.0% | -16.7% |
| 2008 | 30.0% | +15.7% |
| 2009 | 23.4% | -22.0% |
| 2010 | 15.0% | -35.8% |
| 2011 | 16.7% | +11.1% |
| 2012 | 18.5% | +10.7% |
| 2013 | 11.9% | -35.5% |
| 2014 | 10.0% | -16.4% |
Saint Lucia compared with similar countries
- Saint Lucia's 10.0% is below the median for upper middle income countries, which is 38.2%, 26% of the median. (57 countries reporting)
- Saint Lucia's 10.0% is below the median for Latin America & Caribbean, which is 30.0%, 33% of the median. (37 countries reporting)
Biggest year-on-year movements
Years where Nitrogen use efficiency in Saint Lucia 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 | +757.8% | 5.5% | 47.5% |
| 1998 | +201.5% | 2.4% | 7.1% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 38.7% | 19.9% | 49.3% | 9 |
| 1970s | 13.3% | 9.0% | 17.3% | 10 |
| 1980s | 14.0% | 8.8% | 22.2% | 10 |
| 1990s | 6.5% | 2.4% | 11.7% | 10 |
| 2000s | 26.6% | 5.5% | 47.5% | 10 |
| 2010s | 14.4% | 10.0% | 18.5% | 5 |
Countries ranked near Saint Lucia
- 181 Somalia 10.6% compare
- 182 Faroe Islands 10.6% compare
- 183 Montserrat 10.3% compare
- 185 Cyprus 9.3% compare
- 186 Bahrain 8.8% compare
- 187 Puerto Rico 7.5% compare
More reference data data for Saint Lucia
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0062 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.0081 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.0143 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0 (1979)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.0143 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0208 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.0131 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.0405 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.0745 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0 (1979)
Frequently asked questions
- What is nitrogen use efficiency in Saint Lucia?
- Nitrogen use efficiency in Saint Lucia was 10.0% in 2014, according to Lassaletta et al. (2014) – processed by Our World in Data.
- What is the highest nitrogen use efficiency recorded in Saint Lucia?
- The highest recorded value was 49.3% in 1964.
- What is the lowest nitrogen use efficiency recorded in Saint Lucia?
- The lowest recorded value was 2.4% in 1997.
- How does Saint Lucia rank for nitrogen use efficiency?
- Saint Lucia ranks 184th out of 205 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in Saint Lucia?
- Over the last ten years it is down 70.4%. The long-run trend across the full record is volatile.
- Where does this Saint Lucia 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.