Nutrient balance — Cropland nitrogen per unit area in Tonga
Tonga: Nutrient balance — Cropland nitrogen per unit area was -11.02 kg/ha in 2023. ◆ Volatile
Nutrient balance — Cropland nitrogen per unit area in Tonga, 1961–2023
Source: Food and Agriculture Organization of the United Nations. Measured in kg/ha.
Analysis
The most recent figure for nutrient balance — cropland nitrogen per unit area in Tonga is -11.02 kg/ha, measured in 2023.
That represents a change of down 3.2% on the previous year and up 75.2% over ten years.
Over the whole period, nutrient balance — cropland nitrogen per unit area in Tonga peaked at 12.36 kg/ha in 1988 and was at its lowest, -71.78 kg/ha, in 1961.
Tonga ranks 174th of 186 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Nutrient balance — Cropland nitrogen per unit area in Tonga, year by year
| Year | kg/ha | Change |
|---|---|---|
| 1961 | -71.78 kg/ha | — |
| 1962 | -45.24 kg/ha | -37.0% |
| 1963 | -54 kg/ha | +19.4% |
| 1964 | -48.48 kg/ha | -10.2% |
| 1965 | -44.38 kg/ha | -8.5% |
| 1966 | -51.27 kg/ha | +15.5% |
| 1967 | -52.45 kg/ha | +2.3% |
| 1968 | -41.02 kg/ha | -21.8% |
| 1969 | -49.87 kg/ha | +21.6% |
| 1970 | -36.35 kg/ha | -27.1% |
| 1971 | -41.02 kg/ha | +12.8% |
| 1972 | -54.27 kg/ha | +32.3% |
| 1973 | -42.46 kg/ha | -21.8% |
| 1974 | -49.64 kg/ha | +16.9% |
| 1975 | -58.12 kg/ha | +17.1% |
| 1976 | -51.19 kg/ha | -11.9% |
| 1977 | -42.99 kg/ha | -16.0% |
| 1978 | -21.37 kg/ha | -50.3% |
| 1979 | -21.03 kg/ha | -1.6% |
| 1980 | -34.61 kg/ha | +64.5% |
| 1981 | -26.16 kg/ha | -24.4% |
| 1982 | -4.05 kg/ha | -84.5% |
| 1983 | -8.56 kg/ha | +111.1% |
| 1984 | -14.46 kg/ha | +68.9% |
| 1985 | -7.23 kg/ha | -50.0% |
| 1986 | -14.75 kg/ha | +103.9% |
| 1987 | 1.96 kg/ha | -113.3% |
| 1988 | 12.36 kg/ha | +532.2% |
| 1989 | 6.93 kg/ha | -43.9% |
| 1990 | 8.04 kg/ha | +15.9% |
| 1991 | 10.44 kg/ha | +30.0% |
| 1992 | 8.15 kg/ha | -22.0% |
| 1993 | -1.37 kg/ha | -116.8% |
| 1994 | -2.27 kg/ha | +65.8% |
| 1995 | -3.3 kg/ha | +45.2% |
| 1996 | -4.72 kg/ha | +43.1% |
| 1997 | -7.7 kg/ha | +63.1% |
| 1998 | -11.71 kg/ha | +52.1% |
| 1999 | -12.1 kg/ha | +3.3% |
| 2000 | -13.47 kg/ha | +11.4% |
| 2001 | -11.65 kg/ha | -13.5% |
| 2002 | -12.46 kg/ha | +6.9% |
| 2003 | -11.89 kg/ha | -4.6% |
| 2004 | -12.5 kg/ha | +5.1% |
| 2005 | -12.45 kg/ha | -0.4% |
| 2006 | -21.36 kg/ha | +71.6% |
| 2007 | -58.97 kg/ha | +176.0% |
| 2008 | -53.87 kg/ha | -8.6% |
| 2009 | -51.21 kg/ha | -4.9% |
| 2010 | -53.4 kg/ha | +4.3% |
| 2011 | -52.61 kg/ha | -1.5% |
| 2012 | -45.44 kg/ha | -13.6% |
| 2013 | -44.52 kg/ha | -2.0% |
| 2014 | -22.85 kg/ha | -48.7% |
| 2015 | -20.54 kg/ha | -10.1% |
| 2016 | -9.58 kg/ha | -53.4% |
| 2017 | -8.72 kg/ha | -9.0% |
| 2018 | -8.3 kg/ha | -4.8% |
| 2019 | -7.75 kg/ha | -6.6% |
| 2020 | -8.32 kg/ha | +7.4% |
| 2021 | -8.42 kg/ha | +1.2% |
| 2022 | -10.69 kg/ha | +26.9% |
| 2023 | -11.02 kg/ha | +3.2% |
Tonga compared with similar countries
- Tonga's -11.02 kg/ha is below the median for upper middle income countries, which is 36.39 kg/ha. (51 countries reporting)
- Tonga's -11.02 kg/ha is below the median for East Asia & Pacific, which is 20.31 kg/ha. (23 countries reporting)
Biggest year-on-year movements
Years where Nutrient balance — Cropland nitrogen per unit area in Tonga 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 |
|---|---|---|---|
| 1988 | +532.2% | 1.96 kg/ha | 12.36 kg/ha |
| 2007 | -176.0% | -21.36 kg/ha | -58.97 kg/ha |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | -50.94 kg/ha | -71.78 kg/ha | -41.02 kg/ha | 9 |
| 1970s | -41.84 kg/ha | -58.12 kg/ha | -21.03 kg/ha | 10 |
| 1980s | -8.86 kg/ha | -34.61 kg/ha | 12.36 kg/ha | 10 |
| 1990s | -1.65 kg/ha | -12.1 kg/ha | 10.44 kg/ha | 10 |
| 2000s | -25.98 kg/ha | -58.97 kg/ha | -11.65 kg/ha | 10 |
| 2010s | -27.37 kg/ha | -53.4 kg/ha | -7.75 kg/ha | 10 |
| 2020s | -9.61 kg/ha | -11.02 kg/ha | -8.32 kg/ha | 4 |
Countries ranked near Tonga
- 171 Ethiopia PDR -7.53 kg/ha compare
- 172 Ghana -8.11 kg/ha compare
- 173 Papua New Guinea -8.48 kg/ha compare
- 175 Belgium-Luxembourg -11.13 kg/ha compare
- 176 Samoa -14.03 kg/ha compare
- 177 Dominican Republic -18.87 kg/ha compare
More environment data for Tonga
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.234 °C (2025)
- Temperature change 0.858 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 3.06 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 0.1689 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual 0 % change on previous year (2024)
Frequently asked questions
- What is nutrient balance — cropland nitrogen per unit area in Tonga?
- Nutrient balance — cropland nitrogen per unit area in Tonga was -11.02 kg/ha in 2023, according to Food and Agriculture Organization of the United Nations.
- What is the highest nutrient balance — cropland nitrogen per unit area recorded in Tonga?
- The highest recorded value was 12.36 kg/ha in 1988.
- What is the lowest nutrient balance — cropland nitrogen per unit area recorded in Tonga?
- The lowest recorded value was -71.78 kg/ha in 1961.
- How does Tonga rank for nutrient balance — cropland nitrogen per unit area?
- Tonga ranks 174th out of 186 countries with data for 2023.
- Is nutrient balance — cropland nitrogen per unit area rising or falling in Tonga?
- Over the last ten years it is up 75.2%. The long-run trend across the full record is volatile.
- Where does this Tonga data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Nutrient balance — Cropland nitrogen per unit area. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 63 observations, free to reuse under CC BY-NC-SA 3.0 IGO (FAO).
About this data
The Cropland Nutrient balance domain contains information on the flows of nitrogen, phosphorus, and potassium from mineral fertilizer, manure applied, atmospheric deposition, crop removal, and biological fixation over cropland and per unit area of cropland. The flows are aggregated to total inputs and total outputs, from which the overall nutrient balance and nutrient use efficiency on cropland are calculated. Statistics are disseminated in units of tonnes and in kg/ha, as appropriate. Nutrient use efficiency is expressed as a fraction (%).