Biological fixation — Cropland nitrogen per unit area in Guinea-Bissau
Guinea-Bissau: Biological fixation — Cropland nitrogen per unit area was 23.48 kg/ha in 2023. ▼ Falling
Biological fixation — Cropland nitrogen per unit area in Guinea-Bissau, 1961–2023
Source: Food and Agriculture Organization of the United Nations. Measured in kg/ha.
Analysis
In 2023, biological fixation — cropland nitrogen per unit area in Guinea-Bissau stood at 23.48 kg/ha.
That represents a change of up 7.4% on the previous year and up 58.7% over ten years.
Over the whole period, biological fixation — cropland nitrogen per unit area in Guinea-Bissau peaked at 33.8 kg/ha in 1964 and was at its lowest, 6.51 kg/ha, in 2004.
That places Guinea-Bissau 19th out of 176 countries with data for 2023, putting it in the top quarter.
The long-run direction has been consistently falling across the 63 years of available data.
Biological fixation — Cropland nitrogen per unit area in Guinea-Bissau, year by year
| Year | kg/ha | Change |
|---|---|---|
| 1961 | 32.77 kg/ha | — |
| 1962 | 33.14 kg/ha | +1.1% |
| 1963 | 32.72 kg/ha | -1.3% |
| 1964 | 33.8 kg/ha | +3.3% |
| 1965 | 30.2 kg/ha | -10.6% |
| 1966 | 26.48 kg/ha | -12.3% |
| 1967 | 24.62 kg/ha | -7.0% |
| 1968 | 24.19 kg/ha | -1.8% |
| 1969 | 24.38 kg/ha | +0.8% |
| 1970 | 24.26 kg/ha | -0.5% |
| 1971 | 21.89 kg/ha | -9.7% |
| 1972 | 22.06 kg/ha | +0.7% |
| 1973 | 22.23 kg/ha | +0.8% |
| 1974 | 22.87 kg/ha | +2.9% |
| 1975 | 27.18 kg/ha | +18.8% |
| 1976 | 29.07 kg/ha | +6.9% |
| 1977 | 25.33 kg/ha | -12.9% |
| 1978 | 24.8 kg/ha | -2.1% |
| 1979 | 24.73 kg/ha | -0.3% |
| 1980 | 24.56 kg/ha | -0.7% |
| 1981 | 26.44 kg/ha | +7.6% |
| 1982 | 29.42 kg/ha | +11.3% |
| 1983 | 24.98 kg/ha | -15.1% |
| 1984 | 23.47 kg/ha | -6.1% |
| 1985 | 14.02 kg/ha | -40.3% |
| 1986 | 15.82 kg/ha | +12.8% |
| 1987 | 11.17 kg/ha | -29.4% |
| 1988 | 8.28 kg/ha | -25.9% |
| 1989 | 8.57 kg/ha | +3.5% |
| 1990 | 9.01 kg/ha | +5.1% |
| 1991 | 8.84 kg/ha | -1.9% |
| 1992 | 8.84 kg/ha | -0.0% |
| 1993 | 8.89 kg/ha | +0.7% |
| 1994 | 8.51 kg/ha | -4.3% |
| 1995 | 8.4 kg/ha | -1.3% |
| 1996 | 7.89 kg/ha | -6.1% |
| 1997 | 7 kg/ha | -11.3% |
| 1998 | 7.05 kg/ha | +0.8% |
| 1999 | 6.92 kg/ha | -1.8% |
| 2000 | 6.98 kg/ha | +0.8% |
| 2001 | 6.79 kg/ha | -2.7% |
| 2002 | 7.07 kg/ha | +4.2% |
| 2003 | 6.76 kg/ha | -4.3% |
| 2004 | 6.51 kg/ha | -3.8% |
| 2005 | 7.41 kg/ha | +13.9% |
| 2006 | 7.1 kg/ha | -4.1% |
| 2007 | 7.86 kg/ha | +10.7% |
| 2008 | 11 kg/ha | +39.9% |
| 2009 | 9.79 kg/ha | -11.0% |
| 2010 | 10.88 kg/ha | +11.1% |
| 2011 | 10.16 kg/ha | -6.6% |
| 2012 | 12.56 kg/ha | +23.6% |
| 2013 | 14.8 kg/ha | +17.8% |
| 2014 | 13.79 kg/ha | -6.8% |
| 2015 | 16.7 kg/ha | +21.1% |
| 2016 | 18.04 kg/ha | +8.0% |
| 2017 | 18.77 kg/ha | +4.0% |
| 2018 | 19.86 kg/ha | +5.8% |
| 2019 | 20.42 kg/ha | +2.8% |
| 2020 | 20.5 kg/ha | +0.4% |
| 2021 | 20.84 kg/ha | +1.7% |
| 2022 | 21.86 kg/ha | +4.9% |
| 2023 | 23.48 kg/ha | +7.4% |
Guinea-Bissau compared with similar countries
- Guinea-Bissau's 23.48 kg/ha is above the median for low income countries, which is 12.63 kg/ha, 1.9× the median. (21 countries reporting)
- Guinea-Bissau's 23.48 kg/ha is above the median for Sub-Saharan Africa, which is 12.23 kg/ha, 1.9× the median. (40 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 29.15 kg/ha | 24.19 kg/ha | 33.8 kg/ha | 9 |
| 1970s | 24.44 kg/ha | 21.89 kg/ha | 29.07 kg/ha | 10 |
| 1980s | 18.67 kg/ha | 8.28 kg/ha | 29.42 kg/ha | 10 |
| 1990s | 8.13 kg/ha | 6.92 kg/ha | 9.01 kg/ha | 10 |
| 2000s | 7.73 kg/ha | 6.51 kg/ha | 11 kg/ha | 10 |
| 2010s | 15.6 kg/ha | 10.16 kg/ha | 20.42 kg/ha | 10 |
| 2020s | 21.67 kg/ha | 20.5 kg/ha | 23.48 kg/ha | 4 |
Countries ranked near Guinea-Bissau
- 16 China, mainland 28.15 kg/ha compare
- 16 Melanesia 1.62 kg/ha compare
- 17 China 28.05 kg/ha compare
- 17 Polynesia 1.38 kg/ha compare
- 18 Micronesia (Federated States of) 1.24 kg/ha compare
- 18 Suriname 23.57 kg/ha compare
- 20 Rwanda 21.74 kg/ha compare
- 20 Caribbean 5.74 kg/ha compare
- 21 Cambodia 21.38 kg/ha compare
- 22 Sierra Leone 21.23 kg/ha compare
More environment data for Guinea-Bissau
- Historical exposure to drought — Land soil moisture anomaly -2.65 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -2.47 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.303 °C (2025)
- Temperature change 1.27 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 1.26 % 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 0.4449 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is biological fixation — cropland nitrogen per unit area in Guinea-Bissau?
- Biological fixation — cropland nitrogen per unit area in Guinea-Bissau was 23.48 kg/ha in 2023, according to Food and Agriculture Organization of the United Nations.
- What is the highest biological fixation — cropland nitrogen per unit area recorded in Guinea-Bissau?
- The highest recorded value was 33.8 kg/ha in 1964.
- What is the lowest biological fixation — cropland nitrogen per unit area recorded in Guinea-Bissau?
- The lowest recorded value was 6.51 kg/ha in 2004.
- How does Guinea-Bissau rank for biological fixation — cropland nitrogen per unit area?
- Guinea-Bissau ranks 19th out of 176 countries with data for 2023.
- Is biological fixation — cropland nitrogen per unit area rising or falling in Guinea-Bissau?
- Over the last ten years it is up 58.7%. The long-run trend across the full record is falling.
- Where does this Guinea-Bissau data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Biological fixation — Cropland nitrogen per unit area. Statizoid updates them automatically from the source API.
Download this data
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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 (%).