Variable | Definition | Mean | Std deviation |
---|---|---|---|
Improved seeds | 1 if improved seed was planted on plot during the 2018/19 agricultural season | 0.09 | 0.28 |
Inorganic fertilizer | 1 if inorganic fertilizer was used on plot during the 2018/19 agricultural season | 0.43 | 0.49 |
Organic fertilizer | 1 if organic fertilizer was used on plot during the 2018/19 agricultural season | 0.29 | 0.45 |
Legume intercropping | 1 if the plot was intercropped with a leguminous crop during the 2018/19 agricultural season | 0.24 | 0.43 |
Productivity | Value of crop harvest per harvested plot area (Naira/hectare) | 352,254 | 698,189 |
CV of rainfall | Coefficient of variation of rainfall during the planting season (March-June), 1983–2017 | 0.69 | 0.18 |
CV temperature | Coefficient of variation of daily temperature during the planting season (March-June), 1983–2017 | 0.05 | 0.02 |
Rainfall shortfall | Average rainfall shortfall where the annual rainfall during the growing season (March-June) is less than their long-term average (1983–2017) | 19.37 | 7.17 |
CV of GDD | Coefficient of variation of growing degree days during the planting season (March-June), 1983–2017 | 0.22 | 0.21 |
CV days temp | Coefficient of variation of number of days where temperature is greater than 34 °C during the planting season (March-June), 1983–2017 | 0.82 | 0.98 |
Household size | Number of persons in the household | 6.80 | 3.62 |
Dependency | Share of dependents in the household | 1.12 | 1.17 |
Gender | 1 if the plot manager is male | 0.84 | 0.37 |
Age | Age of the plot manager in years | 48.09 | 14.20 |
Education | Number of years of formal education of the plot manager | 6.12 | 4.79 |
Off farm | 1 if the plot manger worked in a non-farm household business | 0.45 | 0.50 |
Wage work | 1 if the plot manger had a wage work | 0.13 | 0.34 |
Credit | 1 if the household had access to credit | 0.12 | 0.32 |
Remittance | 1 if the household received international remittance | 0.02 | 0.13 |
Extension | 1 if the household had access to extension services | 0.20 | 0.40 |
Plot size | Plot size planted (hectares) | 0.52 | 0.78 |
Harvested plot size | Plot size harvested (hectares) | 0.50 | 0.77 |
Owned land | 1 if the plot was owned by the household during the 2018/19 agricultural season | 0.78 | 0.41 |
Erosion | 1 if there is erosion control facility on plot | 0.03 | 0.18 |
Steep slope | 1 if farmer perceives the plot to have a steep slope | 0.22 | 0.41 |
Irrigation | 1 if the plot was irrigated during the 2018/2019 agricultural season | 0.03 | 0.18 |
Fertilizer price | Average price of a Kg of inorganic fertilizer (NPK or urea) | 152.22 | 89.97 |
Distance | Distance from homestead to nearest market (Km) | 61.99 | 47.72 |
Nutrient constraint | Nutrient availability constraint (1–5 scale, 5 = mainly water) | 1.74 | 0.81 |
NDVI | Long-term average NDVI (greenness) in primary growing season (highest quarter) | 0.29 | 0.04 |
Distance to household | Distance from homestead to plot (Km) | 1.42 | 5.25 |
Wealth index | Wealth index, including assets, dwelling characteristics, sanitation and water |  − 0.43 | 0.73 |
Agric capital index | Index of agricultural capital (implements) | 0.66 | 1.05 |
TLU | Tropical livestock size of the household 12Â months prior to the survey | 1.54 | 3.48 |
North Central | 1 if the household is located in North Central zone | 0.24 | 0.43 |
North East | 1 if the household is located in North East zone | 0.15 | 0.36 |
North West | 1 if the household is located in North West zone | 0.32 | 0.47 |
South East | 1 if the household is located in South East zone | 0.13 | 0.34 |
South South | 1 if the household is located in South South zone | 0.03 | 0.18 |
South West | 1 if the household is located in South West zone | 0.12 | 0.33 |