Evaluation of endemic entomopathogenic nematodes for managing Colorado potato beetle and tuber-damaging pests in potato

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2024-10-10 DOI:10.1016/j.cropro.2024.106980

Pin-Chu Lai , Ramandeep Kaur Sandhi , Ollie Vetrovec , Tony Testa , Elson Shields , Brian A. Nault

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引用次数: 0

Abstract

Colorado potato beetle, Leptinotarsa decemlineata, wireworms and white grubs are important pests of potato that are challenging to manage. This study evaluated three endemic entomopathogenic nematodes (EPNs) (Steinernema carpocapsae ‘NY01’, S. feltiae ‘NY04’, and Heterorhabditis bacteriophora ‘Oswego’) as biocontrol agents against L. decemlineata, wireworms and white grubs in New York. The efficacy of individual EPN species and their combinations on L. decemlineata larval mortality was assessed via soil-based bioassays in the laboratory. Additionally, L. decemlineata survival and percentage of tubers damaged by wireworms and white grubs were evaluated in field trials in which combinations of pairs of EPN species were applied to the soil at least one month prior to initiating the experiment. Results from bioassays indicated that among the three EPN species, L. decemlineata late instars were most susceptible to H. bacteriophora ‘Oswego’. Additionally, larval mortality was generally higher (14% on average) using pairs of EPN species compared to single species. Soil applications of pairs of EPN species prior to potato planting did not affect L. decemlineata adult survival either during the summer or following spring. However, tuber damage caused by wireworms and white grubs was reduced by 40% using a combination of H. bacteriophora ‘Oswego’ and S. feltiae ‘NY04’. Overall, EPNs applied in soil have potential as biocontrol agents for soil-dwelling pests like wireworms and white grubs in potato, and their efficacy also may extend beyond a single cropping season, but do not seem to be an effective tool for L. decemlineata management in potato.

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评估地方性昆虫病原线虫对科罗拉多马铃薯甲虫和马铃薯块茎破坏性害虫的防治效果

科罗拉多马铃薯甲虫（Leptinotarsa decemlineata）、线虫和白蛴螬是马铃薯的重要害虫，治理起来非常困难。本研究评估了纽约三种地方性昆虫病原线虫（EPNs）（Steinernema carpocapsae 'NY01'、S. feltiae 'NY04'和 Heterorhabditis bacteriophora 'Oswego'）作为生物控制剂对 L. decemlineata、线虫和白蛴螬的防治效果。在实验室中，通过基于土壤的生物测定，评估了单个 EPN 物种及其组合对致死 L. decemlineata 幼虫的功效。此外，还在田间试验中评估了 L. decemlineata 的存活率以及被线虫和白蛴螬破坏的块茎的百分比。生物测定结果表明，在三种 EPN 物种中，L. decemlineata 晚龄幼虫最容易受到 H. bacteriophora 'Oswego' 的侵害。此外，使用成对的 EPN 物种与单一物种相比，幼虫死亡率普遍较高（平均为 14%）。在马铃薯种植前在土壤中施用成对的 EPN 物种不会影响 L. decemlineata 成虫在夏季或次年春季的存活率。然而，使用 H. bacteriophora 'Oswego' 和 S. feltiae 'NY04' 的组合，线虫和白蛴螬对块茎造成的损害减少了 40%。总之，在土壤中施用 EPNs 有可能成为马铃薯线虫和白蛴螬等土栖害虫的生物控制剂，其功效也可能超过一个作物季节，但似乎不是马铃薯 L. decemlineata 管理的有效工具。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.