| Variable | SE | IRR | FE | CO | PE | RE | HL | PHL |
| Seed | 1 |
|
|
|
|
|
|
|
| Irrigation | 0.079 | 1 |
|
|
|
|
|
|
| Fertilizer | 0.207 | 0.135 | 1 |
|
|
|
|
|
| Compost | 0.006 | 0.118 | 0.542 | 1 |
|
|
|
|
| Pesticide | 0.060 | 0.077 | 0.771 | 0.877 | 1 |
|
|
|
| Rental | 0.277 | 0.085 | 0.647 | 0.406 | 0.416 | 1 |
|
|
| Hired labor | 0.227 | 0.223 | 0.455 | 0.017 | 0.097 | 0.320 | 1 |
|
| Post-harvest labor | −0.105 | 0.320 | −0.176 | −0.115 | −0.141 | −0.144 | 0.00 | 1 |