Table 4. Frequency of resistant isolates to MBI-Ds in each plot in Ehimea).
Products for blast control | No. of tested isolatesc) | No. of resistant isolatesd) | % of resistant isolatese) | |
---|---|---|---|---|
Nursery boxb) | Foliar applicationb) | |||
Orysastrobin | Ferimzone+diclocymet | 14 | 2 | 14.3 |
Orysastrobin | Ferimzone+phthalide | 10 | 1 | 10 |
Orysastrobin | None | 16 | 0 | 0 |
Tiadinil | Ferimzone+diclocymet | 19 | 0 | 0 |
Tiadinil | Ferimzone+phthalide | 17 | 0 | 0 |
Tiadinil | None | 19 | 0 | 0 |
Diclocymet | Ferimzone+diclocymet | 19 | 9 | 47.4# |
Diclocymet | Ferimzone+phthalide | 13 | 1 | 7.7 |
Diclocymet | None | 20 | 4 | 20.0# |
None | Ferimzone+diclocymet | 32 | 3 | 9.4 |
None | Ferimzone+phthalide | 33 | 0 | 0 |
None | None | 39 | 0 | 0 |
a) Application date: May 20 (planting), June 12 (flowering) Sampling date: September 17. b) Type of application. c) P. oryzae isolates were isolated from panicle blast. d) Sensitivities were analyzed by primer-introduced restriction enzyme analysis-based PCR. e) “#” Statistically different from the none–none plot according to Fisher’s exact test (p<0.05).