Table 4 Association between seasonal beetle catches of the field and the probability of the next establishment of wireworm populations.
Species and Monitoring year | Adults thresholds (No.) | Larvae thresholds (No.) | No. of records | Range of damage probability | Mean damage probability | RR (high vs. low) | SE | 95% CI | Wald χ–square | P χ–square test |
|---|---|---|---|---|---|---|---|---|---|---|
A. brevis Y-1 | ≤210 (low) | ≤1 | 110 | 0.02–0.13 | 0.03 | 74 | 75.2 | 10.1–542.3 | 17.94 | <0.001 |
>1 | 1 | |||||||||
>210 (high) | ≤1 | 4 | 0.16–0.93 | 0.45 | ||||||
>1 | 8 | |||||||||
A. sordidus Y-1 | ≤1,100 (low) | ≤2 | 83 | 0.025–0.028 | 0.027 | Not est. | ||||
>2 | 3 | |||||||||
>1,100 (high) | ≤2 | 27 | 0.021–0.025 | 0.024 | ||||||
>2 | 0 | |||||||||
A. ustulatus Y-2* | ≤1,000 (low) | ≤5 | 60 | 0.01–0.05 | 0.02 | 20.33 | 26.12 | 1.64–252.17 | 5.5 | 0.019 |
>5 | 1 | |||||||||
>1,000 (high) | ≤5 | 2 | 0.33–0.41 | 0.37 | ||||||
>5 | 1 |
