Improving a pest management tool for scenario analysis of economic populations of Globodera pallida

Summary Globodera pallida is the most damaging pest of potato in UK. This work underpins enhancement a well-established, web-based scenario analysis tool for its management by recommending additions and modifications required inputs change basis yield loss estimates. The annual decline rate dormant egg population determined at individual field sample level to help define rotation length comparing viable content recovered cysts that newly formed same projected area. mean was 20.4 ± 1.4% but ranged from 4.0 39.7% annum −1 level. Further changes were based on meta-analysis previous trials. Spring rainfall region where located cultivar tolerance influence loss. Tolerance has proved difficult many UK cultivars trials uncertainty can be avoided without detriment replacing it with determinacy integers. They are already support optimisation nitrogen application rates. Multiple linear regression estimates caused pre-plant populations up 20 eggs (g soil) varies ca 0.2 2.0% (viable egg) depending spring rainfall. Reliability outcomes requires validation densities over which planting advisable.