| S/N | Variable | Description |
| 1 | GDP | Agricultural output expressed in terms of quantal per hectare |
| 2 | Fertilizer | The amount of fertilizer used per hectare |
| 3 | Labor force | The number of individual person used for work |
| 4 | Improved seed | The type of seed used |
| 5 | Irrigated land | The size of land which was irrigated |
| 6 | pesticides | The amount of pesticides in litter per hectare to protect disease |