Koehler, A-K, Bell, CA orcid.org/0000-0002-7437-2793, Back, MA et al. (2 more authors) (2022) Improving a pest management tool for scenario analysis of economic populations of Globodera pallida. Nematology: international journal of fundamental and applied nematological research, 244 (4). pp. 401-411. ISSN 1388-5545
Abstract
Globoderapallida is the most damaging pest of potato in the UK. This work underpins enhancement of a well-established, web-based scenario analysis tool for its management by recommending additions and modifications of its required inputs and a change in the basis of yield loss estimates. The required annual decline rate of the dormant egg population is determined at the individual field sample level to help define the required rotation length by comparing the viable egg content of recovered cysts to that of newly formed cysts for the same projected area. The mean annual decline was 20.4 ± 1.4% but ranged from 4.0 to 39.7% annum−1 at the field level. Further changes were based on meta-analysis of previous field trials. Spring rainfall in the region where a field is located and cultivar tolerance influence yield loss. Tolerance has proved difficult to define for many UK potato cultivars in field trials but uncertainty can be avoided without detriment by replacing it with determinacy integers. They are already determined to support optimisation of nitrogen application rates. Multiple linear regression estimates that loss caused by pre-plant populations of up to 20 viable eggs (g soil)−1 varies from ca 0.2 to 2.0% (viable egg)−1 (g soil)−1 depending on cultivar determinacy and spring rainfall. Reliability of the outcomes from scenario analysis requires validation in field trials with population densities over which planting is advisable.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © ANN-KRISTIN KOEHLER ET AL., 2022 This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | decline rate; improved yield loss model; pestmanagement; potato cyst nematode; Solanum tuberosum; tolerance; yield |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Funding Information: | Funder Grant number NERC (Natural Environment Research Council) NE/P00797X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Oct 2021 10:19 |
Last Modified: | 14 Jan 2023 03:13 |
Status: | Published |
Publisher: | Brill Academic Publishers |
Identification Number: | 10.1163/15685411-bja10138 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:179015 |