Table 1.
Reproduction factor (Rf, ratio of final nematode population and initial inoculum level) of ring nematode on two peach rootstocks and ten cover crops and their host status at two months post-inoculation in a greenhouse environment.
| Crop | First Experiment | Host Status | Second Experiment | Host Status |
|---|---|---|---|---|
| Rye | 0.3 ± 0.05 bc | PH | 1.8 ± 0.53 cd | GH |
| Wheat | 0.0 ± 0.00 c | NH | 0.5 ± 0.52 d | PH |
| Barley | 0.7 ± 0.10 a–c | PH | 2.9 ± 0.65 b–d | GH |
| Triticale | 0.1 ± 0.03 c | PH | 0.7 ± 0.52 d | PH |
| Oats | 0.3 ± 0.05 bc | PH | 1.1 ± 0.69 d | GH |
| Austrian winter pea | 1.9 ± 0.10 a | GH | 13.8 ± 1.54 a | GH |
| Crimson clover | 1.6 ± 0.23 ab | GH | 10.9 ± 0.84 ab | GH |
| Balansa clover | 1.4 ± 0.23 ab | GH | 22 ± 1.70 a | GH |
| Hairy vetch | 0.6 ± 0.13 a–c | PH | 11.2 ± 0.97 ab | GH |
| Daikon radish | 0.7 ± 0.08 a–c | PH | 2.3 ± 0.62 b–d | GH |
| ‘MP-29’ | 0.4 ± 0.05 bc | PH | 14.9 ± 0.73 a | GH |
| ‘Guardian’ | 0.7 ± 0.13 a–c | PH | 10.4 ± 1.96 a–c | GH |
| p-value | <0.0001 | - | <0.0001 | - |
‘Guardian’ was used as control. Plants were inoculated with 500 ring nematodes. Data are means of five replications. Means followed by a common letter within a column are not significantly different according to Tukey’s HSD test (p ≤ 0.05). Values presented as mean ± standard error. Host status was designated based on mean Rf values. NH = non-host, PH = poor host, GH = good host.