| (1) | (2) |
---|

Variables | Robust OLS | Elasticity |
---|

IRRIG | 0.308 (28.14) | 0.003 |

SEED | 0.381 (1.059) | 0.038 |

LNTREND | 0.460** (0.191) | |

RAINP | 0.005 (NA) | 1.65 |

Constant | − 2.4 (1.110) | |

Observations | 15 | |

Adjusted *R*^{2} | 0.61 | |

*F* statistics | 6.49** | |

- Robust standard errors in parentheses; **
*p* < 0.05, **p* < 0.1; no standard errors are reported for the rainfall variable. Because of undesirable coefficient signs, we modified the value of the rainfall variable using a synthetic estimation technique. A synthetic elasticity coefficient value of 1.65 was used to obtain the rainfall coefficient. Given the high dependency of maize production on rainfall, the use of a 1.65 elasticity value is reasonable