Outputs — Cropland nitrogen per unit area in Tonga
Tonga: Outputs — Cropland nitrogen per unit area was 42.31 kg/ha in 2023. ▼ Falling
Outputs — 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 outputs — cropland nitrogen per unit area in Tonga is 42.31 kg/ha, measured in 2023.
The figure is up 1.7% on the previous year and down 45.5% over ten years.
Over the whole period, outputs — cropland nitrogen per unit area in Tonga peaked at 90.03 kg/ha in 2007 and was at its lowest, 25.79 kg/ha, in 1990.
Tonga ranks 93rd of 186 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 63 years of available data.
Outputs — Cropland nitrogen per unit area in Tonga, year by year
| Year | kg/ha | Change |
|---|---|---|
| 1961 | 84.47 kg/ha | — |
| 1962 | 59.69 kg/ha | -29.3% |
| 1963 | 68.5 kg/ha | +14.8% |
| 1964 | 63.07 kg/ha | -7.9% |
| 1965 | 59.06 kg/ha | -6.4% |
| 1966 | 67.44 kg/ha | +14.2% |
| 1967 | 67.88 kg/ha | +0.6% |
| 1968 | 57.08 kg/ha | -15.9% |
| 1969 | 65.24 kg/ha | +14.3% |
| 1970 | 52.48 kg/ha | -19.6% |
| 1971 | 56.32 kg/ha | +7.3% |
| 1972 | 69.21 kg/ha | +22.9% |
| 1973 | 59.08 kg/ha | -14.6% |
| 1974 | 67.98 kg/ha | +15.1% |
| 1975 | 78.07 kg/ha | +14.9% |
| 1976 | 75.9 kg/ha | -2.8% |
| 1977 | 70.32 kg/ha | -7.4% |
| 1978 | 53.73 kg/ha | -23.6% |
| 1979 | 53.55 kg/ha | -0.3% |
| 1980 | 66.67 kg/ha | +24.5% |
| 1981 | 62.79 kg/ha | -5.8% |
| 1982 | 37.4 kg/ha | -40.4% |
| 1983 | 38.86 kg/ha | +3.9% |
| 1984 | 41.54 kg/ha | +6.9% |
| 1985 | 39.55 kg/ha | -4.8% |
| 1986 | 49 kg/ha | +23.9% |
| 1987 | 35.51 kg/ha | -27.5% |
| 1988 | 28.37 kg/ha | -20.1% |
| 1989 | 28.54 kg/ha | +0.6% |
| 1990 | 25.79 kg/ha | -9.6% |
| 1991 | 25.8 kg/ha | +0.0% |
| 1992 | 27.76 kg/ha | +7.6% |
| 1993 | 36.84 kg/ha | +32.7% |
| 1994 | 34.86 kg/ha | -5.4% |
| 1995 | 32.38 kg/ha | -7.1% |
| 1996 | 33.29 kg/ha | +2.8% |
| 1997 | 36.97 kg/ha | +11.1% |
| 1998 | 40.1 kg/ha | +8.5% |
| 1999 | 40.55 kg/ha | +1.1% |
| 2000 | 42.56 kg/ha | +5.0% |
| 2001 | 43.2 kg/ha | +1.5% |
| 2002 | 43.71 kg/ha | +1.2% |
| 2003 | 43.45 kg/ha | -0.6% |
| 2004 | 43.34 kg/ha | -0.3% |
| 2005 | 43.38 kg/ha | +0.1% |
| 2006 | 51.63 kg/ha | +19.0% |
| 2007 | 90.03 kg/ha | +74.4% |
| 2008 | 88.94 kg/ha | -1.2% |
| 2009 | 85.45 kg/ha | -3.9% |
| 2010 | 84.41 kg/ha | -1.2% |
| 2011 | 83.77 kg/ha | -0.8% |
| 2012 | 77.49 kg/ha | -7.5% |
| 2013 | 77.67 kg/ha | +0.2% |
| 2014 | 54.63 kg/ha | -29.7% |
| 2015 | 50.72 kg/ha | -7.2% |
| 2016 | 41.47 kg/ha | -18.2% |
| 2017 | 41.47 kg/ha | +0.0% |
| 2018 | 39.43 kg/ha | -4.9% |
| 2019 | 39.42 kg/ha | -0.0% |
| 2020 | 40.09 kg/ha | +1.7% |
| 2021 | 40.61 kg/ha | +1.3% |
| 2022 | 41.61 kg/ha | +2.5% |
| 2023 | 42.31 kg/ha | +1.7% |
Tonga compared with similar countries
- Tonga's 42.31 kg/ha is above the median for upper middle income countries, which is 42.31 kg/ha, 1.0× the median. (51 countries reporting)
- Tonga's 42.31 kg/ha is below the median for East Asia & Pacific, which is 50.74 kg/ha, 83% of the median. (23 countries reporting)
Biggest year-on-year movements
Years where Outputs — 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 |
|---|---|---|---|
| 2007 | +74.4% | 51.63 kg/ha | 90.03 kg/ha |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 65.83 kg/ha | 57.08 kg/ha | 84.47 kg/ha | 9 |
| 1970s | 63.66 kg/ha | 52.48 kg/ha | 78.07 kg/ha | 10 |
| 1980s | 42.82 kg/ha | 28.37 kg/ha | 66.67 kg/ha | 10 |
| 1990s | 33.43 kg/ha | 25.79 kg/ha | 40.55 kg/ha | 10 |
| 2000s | 57.57 kg/ha | 42.56 kg/ha | 90.03 kg/ha | 10 |
| 2010s | 59.05 kg/ha | 39.42 kg/ha | 84.41 kg/ha | 10 |
| 2020s | 41.15 kg/ha | 40.09 kg/ha | 42.31 kg/ha | 4 |
Countries ranked near Tonga
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 outputs — cropland nitrogen per unit area in Tonga?
- Outputs — cropland nitrogen per unit area in Tonga was 42.31 kg/ha in 2023, according to Food and Agriculture Organization of the United Nations.
- What is the highest outputs — cropland nitrogen per unit area recorded in Tonga?
- The highest recorded value was 90.03 kg/ha in 2007.
- What is the lowest outputs — cropland nitrogen per unit area recorded in Tonga?
- The lowest recorded value was 25.79 kg/ha in 1990.
- How does Tonga rank for outputs — cropland nitrogen per unit area?
- Tonga ranks 93rd out of 186 countries with data for 2023.
- Is outputs — cropland nitrogen per unit area rising or falling in Tonga?
- Over the last ten years it is down 45.5%. The long-run trend across the full record is falling.
- Where does this Tonga data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Outputs — 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 (%).