Table 4.
Cobb–Douglas production function of factors affecting maize productivity by gender of the HH head
| Variables | Pooled sample | MHHs | All FHHs | de jure FHHs | de facto FHHs |
|---|---|---|---|---|---|
| Log of land planted with maize/ha | 0.686*** (0.046) | 0.677*** (0.056) | 0.705*** (0.088) | 0.857*** (0.101) | 0.530*** (0.184) |
| Log of fertilizer/ha | 0.207*** (0.018) | 0.200*** (0.021) | 0.211*** (0.032) | 0.172*** (0.039) | 0.181*** (0.073) |
| Log of improved variety maize seed | 0.533*** (0.093) | 0.551*** (0.112) | 0.410*** (0.163) | 0.328** (0.212) | 0.603*** (0.294) |
| Log of family male labor h/ha | 0.187** (0.021) | 0.143*** (0.054) | 0.294*** (0.041) | 0.357** (0.023) | 0.272** (0.070) |
| Log of family female labor h/ha | 0.031* * (0.060) | 0.068* (0.072) | 0.112** (0.156) | 0.098** (0.076) | 0.107** (0.080) |
| Log of number of oxen owned | 0.207*** (0.127) | 0.275** (0.155) | 0.181** (0.221) | 0.472* (0.279) | 0.253* * (0.434) |
| Log of other livestock in TLU | 0.076 (0.056) | 0.060 (0.066) | 0.145 (0.103) | − 0.013 (0.128) | 0.299* (0.204) |
| Age of the household head in years | − 0.003 (0.003) | − 0.008** (0.003) | 0.010** (0.005) | 0.014** (0.006) | − 0.012 (0.015) |
| Education level of household head in years | 0.009 (0.008) | 0.010 (0.009) | 0.018 (0.015) | − 0.000 (0.019) | 0.053** (0.026) |
| Access to credit (1 = yes) | 0.053 (0.060) | 0.046 (0.073) | 0.030 (0.107) | − 0.023 (0.132) | − 0.007 (0.201) |
| Contact with extension agent (1 = yes) | 0.130* (0.078) | 0.117 (0.096) | 0.112 (0.129) | 0.054 (0.146) | 0.324 (0.301) |
| Distance from the market in km | − 0.005 (0.005) | − 0.007 (0.005) | − 0.002 (0.008) | − 0.003 (0.012) | − 0.026 (0.022) |
| Intercropping (1 = yes) | − 0.007 (0.058) | 0.013 (0.070) | − 0.047 (0.102) | − 0.006 (0.133) | − 0.109 (0.178) |
| Crop rotation (1 = yes) | 0.096 (0.057) | 0.178** (0.070) | 0.086 (0.096) | 0.107 (0.121) | − 0.090 (0.192) |
| Agro− ecology (1 = lowland) | 0.458*** (0.131) | 0.465** (0.173) | 0.452** (0.193) | − 0.079 (0.251) | 0.741** (0.322) |
| Agro-ecology (1 = mid land) | 0.285** (0.131) | 0.251 (0.175) | 0.243 (0.190) | − 0.080 (0.235) | 0.530 (0.327) |
| Sex of household head dummy | 0.010 (0.067) | ||||
| Constant | 6.269*** (0.449) | 5.802*** (0.625) | 5.014*** (0.739) | 7.063*** (0.962) | 4.313*** (0.448) |
| F-ratio | 65.96 | 45.12 | 26.80 | 21.83 | 8.21 |
| Prob > F | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| R2 | 0.675 | 0.649 | 0.763 | 0.829 | 0.749 |
| Adj R2 | 0.665 | 0.634 | 0.734 | 0.791 | 0.657 |
| Number observations | 560 | 409 | 151 | 89 | 62 |
Source: Own survey result (2018). ***, ** and * denote level of significance at 1%, 5% and 10%, respectively. Standard Errors are given in parentheses