Table 11b.
Estimation results of determinants of quantity of fertilizers purchased by farmers in Nigeria.
| Variables | Nigeria |
South |
North |
|||
|---|---|---|---|---|---|---|
| CRE Tobit | Linear FE | CRE Tobit | Linear FE | CRE Tobit | Linear FE | |
| Household head is Male (0/1) | 65.803∗∗∗ | 139.042∗∗ | 20.022 | 11.096 | 109.283∗∗∗ | 346.443∗∗ |
| [0.003] | [0.032] | [0.333] | [0.870] | [0.007] | [0.038] | |
| Age of the household head (years) | 0.086 | −1.871 | 0.220 | 0.828 | 0.319 | −2.984 |
| [0.802] | [0.297] | [0.698] | [0.619] | [0.462] | [0.200] | |
| Household dependency ratio | 0.941 | 4.056 | 24.422 | 10.978 | −11.982 | −0.741 |
| [0.935] | [0.847] | [0.184] | [0.727] | [0.414] | [0.978] | |
| Household head has formal education (0/1) | 31.943∗∗ | 1.798 | 43.532∗∗ | 8.492 | 29.495∗ | 9.200 |
| [0.014] | [0.953] | [0.032] | [0.910] | [0.079] | [0.782] | |
| Land holding size (hectares) | −49.135∗∗∗ | −111.516∗∗∗ | −44.826∗ | −81.532∗∗∗ | −59.393∗∗∗ | −117.974∗∗∗ |
| [0.000] | [0.000] | [0.051] | [0.001] | [0.000] | [0.000] | |
| Agricultural asset index | 1.779∗ | 1.372 | 1.948 | 0.838 | 1.721+ | 0.915 |
| [0.063] | [0.228] | [0.405] | [0.511] | [0.113] | [0.599] | |
| Total Livestock Units index | 794.160∗∗∗ | 890.156∗∗ | −254.360 | 174.590 | 843.723∗∗∗ | 833.816∗∗ |
| [0.001] | [0.012] | [0.832] | [0.812] | [0.002] | [0.022] | |
| LOG of crop sales in naira per ha of harvested land | 0.277 | 0.046 | 0.048 | −0.164 | 0.531 | 0.433 |
| [0.536] | [0.940] | [0.936] | [0.859] | [0.402] | [0.571] | |
| A household member is engaged in Non-Farm Self-employment (1/0) | 16.582 | −12.894 | 57.657+ | 2.836 | 7.946 | −5.306 |
| [0.484] | [0.750] | [0.144] | [0.965] | [0.798] | [0.917] | |
| A household member is engaged in wage employment (1/0) | 85.647 | 12.824 | −12.627 | 16.299 | 16.685 | 31.760 |
| [0.796] | [0.690] | [0.702] | [0.779] | [0.490] | [0.404] | |
| A household member took a loan (0/1) | 15.764 | 3.137 | 32.709 | 44.667 | 14.671 | −4.289 |
| [0.341] | [0.893] | [0.218] | [0.234] | [0.479] | [0.884] | |
| Coefficient of variation of rainfall | −2.147∗∗∗ | −4.164 | −2.568∗∗∗ | |||
| [0.000] | [0.356] | [0.000] | ||||
| LOG of fertilizer price in Naira per kg | −31.291 | −56.164∗∗ | −35.938 | −60.673∗∗ | −28.953 | −64.421+ |
| [0.208] | [0.024] | [0.293] | [0.041] | [0.437] | [0.114] | |
| Share of total land cultivated allocated to grains crops | 1.088 | 18.904∗∗∗ | −0.008 | −1.120+ | 2.802∗ | 18.990∗∗∗ |
| [0.224] | [0.005] | [0.993] | [0.147] | [0.074] | [0.004] | |
| Share of total land cultivated allocated to legumes crops | 1.019 | 19.196∗∗∗ | 0.926 | −0.400 | 2.504+ | 18.899∗∗∗ |
| [0.301] | [0.005] | [0.488] | [0.685] | [0.111] | [0.005] | |
| Share of total land cultivated allocated to tubers crops | 0.809 | 19.181∗∗∗ | 0.001 | −0.121 | 2.074 | 18.070∗∗∗ |
| [0.375] | [0.004] | [0.999] | [0.805] | [0.167] | [0.006] | |
| Share of total land cultivated allocated to oil crops | 1.286 | 19.935∗∗∗ | 0.665 | 1.016 | 1.557 | 18.326∗∗∗ |
| [0.228] | [0.003] | [0.526] | [0.250] | [0.413] | [0.005] | |
| Share of total land cultivated allocated to horticulture crops | 1.623∗ | 19.315∗∗∗ | 0.956 | 0.116 | 2.441 | 18.318∗∗∗ |
| [0.078] | [0.004] | [0.318] | [0.802] | [0.161] | [0.006] | |
| Share of total land cultivated allocated to cotton | −7.072∗∗∗ | −7.280∗∗ | ||||
| [0.009] | [0.041] | |||||
| Urban dummy variable (0/1) | 48.053∗∗ | −229.742 | 57.901∗∗ | −99.588+ | 18.113 | −255.808 |
| [0.012] | [0.339] | [0.019] | [0.146] | [0.426] | [0.344] | |
| Household Distance in (KMs) to Nearest Market | −1.074∗∗∗ | 1.853 | −0.435 | 3.524 | −1.208∗∗∗ | 2.646 |
| [0.000] | [0.538] | [0.302] | [0.326] | [0.000] | [0.544] | |
| Year 2010 (0/1) | 20.286∗ | 10.804 | 39.974∗∗∗ | 92.170∗∗∗ | 1.296 | −30.360 |
| [0.070] | [0.559] | [0.009] | [0.000] | [0.938] | [0.265] | |
| Zone dummies | 72.740∗∗∗ | 54.593∗ | ||||
| [0.009] | [0.072] | |||||
| North east | 179.017∗∗∗ | 172.165∗∗∗ | ||||
| [0.000] | [0.000] | |||||
| North west | −32.435 | 211.842∗∗∗ | ||||
| [0.425] | [0.000] | |||||
| South east | −155.953∗∗∗ | 105.926∗∗ | ||||
| [0.003] | [0.021] | |||||
| South center | −241.589∗∗∗ | |||||
| [0.000] | ||||||
| South west | −1551.668∗∗ | 89.799 | −1654.857∗∗ | |||
| [0.031] | [0.755] | [0.031] | ||||
| Number of observations | 4843 | 4843 | 1670 | 1670 | 3173 | 3173 |
| R-squared | 0.059 | 0.050 | 0.083 | |||
| Number of households | 2730 | 995 | 1735 | |||
Note:∗∗∗, ∗∗, ∗, and + indicate that the corresponding regression coefficients are statistically significant at the 1%, 5%, 10%, and 15% levels, respectively. Model estimated using partial MLE estimation method. P values based on clustered standard errors between brackets.
Source: Generated by authors using LSMS data.