| Sub County | Extension Visits | Mean Performance (kg) |
| Kisii Central | 1.77 | 2484.67 |
| Gucha | 2.37 | 2571.47 |
| Masaba South | 5.27 | 6558.50 |
| Kenyenya | 3.90 | 5352.47 |
| Combined | 3.33 | 4241.78 |