Table 2.
CBSD incidences and yield for SRG baseline fields with local varieties − Chato.
| Farmer | Plant total incidencea | Plant shoot incidenceb | Plant root incidencec | Root incidenced | Unusable root incidencee | Yieldf t/ha |
|---|---|---|---|---|---|---|
| Marco Mussa | 92.0 | 89.0 | 22.0 | 6.6 | 2.8 | 9.9 |
| Pascal Mathew | 100.0 | 96.0 | 24.0 | 9.8 | 5.1 | 4.5 |
| Mathew Magazi | 97.0 | 93.0 | 24.0 | 7.2 | 4.3 | 6.6 |
| Andrea Katigula | 97.0 | 97.0 | 26.0 | 8.8 | 5.8 | 3.9 |
| Bernard Kasamwa | 99.0 | 99.0 | 63.0 | 27.3 | 11.4 | 5.8 |
| Andrew Kasama | 96.0 | 94.0 | 57.0 | 32.4 | 17.6 | 4.9 |
| Buswetula Kisatu | 96.0 | 96.0 | 20.0 | 8.0 | 2.6 | 7.3 |
| Lucas Kamulajone | 99.0 | 99.0 | 28.0 | 8.1 | 3.2 | 6.6 |
| Mwakoye Mwanzalima | 97.0 | 94.0 | 21.0 | 7.2 | 3.3 | 6.5 |
| Emmanuel Philemmon | 100 | 100 | 3.0 | 1.4 | 1.4 | 0.6 |
| Overall Mean | 97.3 | 95.7 | 28.8 | 11.7 | 5.8 | 5.7 |
a
Plant total incidence − Percentage of plants with CBSD symptoms in either shoots or roots.
b
Plant shoot incidence − Percentage of plants with CBSD symptoms in shoots.
c
Plant root incidence − Percentage of plants with CBSD symptoms in roots.
d
Root incidence − Percentage of roots with CBSD symptoms.
e
Unusable root incidence − Percentage of roots with at least one cut (out of five) with CBSD severity score 3 or more.
f
Yield − Yield of tuberous roots harvested from five blocks of 20 plants per farmer’s field, measured in t/ha.