Automated video-tracking analysis of Agriotes obscurus wireworm behaviour before, during and after contact with thiamethoxam- and imidacloprid-treated wheat seeds

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 28, 2025

Limited studies have highlighted the importance of incorporating behavioural assessments into insecticide efficacy evaluations for wireworm pest control. "For this study, video tracking technology combined with a soil bioassay arena was employed to analyse behaviour Agriotes obscurus wireworms before, during, and after exposure wheat seeds treated neonicotinoid insecticides thiamethoxam imidacloprid at field-relevant concentrations. The analysis identified set key metrics assessing effects these on wireworms. results showed that exhibited neutral attractancy towards A brief period feeding followed by rapid intoxication minimised damage seeds. Furthermore, demonstrated specific form resistance neonicotinoids did not rely sensory input. In insects, speed intoxication, accompanied drastic changes in behaviour, ensured they received sublethal rather than lethal dose insecticide. fully recovered from all abnormalities within week, none died 20 days following exposure. conclusion, method provides efficient means intended management, offering valuable insights prior more resource-intensive costly field trials.

Language: Английский

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Scarcity of pesticide data in New Zealand with a focus on neonicotinoids: A review

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 970, P. 179044 - 179044

Published: March 1, 2025

Since Europe's 2018 neonicotinoid ban on outdoor use of clothianidin, imidacloprid, and thiamethoxam, there has been growing political, scientific, public interest in further understanding the impact neonicotinoids bees environment. Here, we assessed trends pesticide New Zealand, with a particular focus neonicotinoids, to aid discussion their associated risks. Obtaining data annual quantities is challenging, as no central collection across agrichemical or regulatory sectors Zealand. Consequently, true scale frequency usage, including remain largely unknown. The difference patterns between where 45 % forage brassicas (annual planting) pastures (infrequent are grown from neonicotinoid-treated seeds, northern hemisphere countries, 56 over 90 food crops rely indicates lower overall This underscores need for region-specific approaches management regulation. Although residues can persist migrate soil, current regulations only consider risk foliar spray protect honey bees, overlooking potential risks native which primarily live underground, well wider lethal sublethal impacts non-target organisms. lack publicly accessible limits scientific research environmental effects, absence readily available substitutes key challenge be overcome order better manage these pesticides Zealand ecosystems.

Language: Английский

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Neonicotinoid Seed Treatments Have Significant Non-target Effects on Phyllosphere and Soil Bacterial Communities

Frontiers in Microbiology, Journal Year: 2021, Volume and Issue: 11

Published: Jan. 13, 2021

The phyllosphere and soil are dynamic habitats for microbial communities. Non-pathogenic microbiota, including leaf beneficial bacteria, plays a crucial role in plant growth health, as well fertility organic matter production. In sustainable agriculture, it is important to understand the composition of these bacterial communities, their changes response disturbances, resilience agricultural practices. Widespread pesticide application may have had non-target impacts on microorganisms. Neonicotinoids family systemic insecticides being vastly used control foliar pests recent decades. A few studies demonstrated long-term effects neonicotinoids agroecosystem but generality findings remains unclear. this study, we 16S rRNA gene amplicon sequencing characterize neonicotinoid seed treatment community diversity, temporal dynamics 3-year soybean/corn rotation Quebec, Canada. We found that habitat, host species time stronger drivers variation than application. They, respectively, explained 37.3, 3.2, 2.9% variation. However, did an impact structure, especially taxonomic communities (2.6%) over (2.4%). They also caused decrease alpha diversity middle growing season. While favored some genera known biodegraders, there was decline relative abundance potentially bacteria Some such growth-promoting rhizobacteria involved nitrogen cycle, vital improve fertility. Overall, our results indicate soybean-corn agroecosystem. Exploring interactions among other organisms, functional responses treatment, enhance understanding help us adapt practices impacts.

Language: Английский

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Association of Root Rot Disease With Common Bean Stem Maggot (Ophyiomia phaseoli) and Testing of Insecticides for Stem Maggot Control on Common Bean (Phaseolus vulgaris L.) in West Hararghe, Ethiopia

Psyche A Journal of Entomology, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

Bean stem maggot (BSM) and root rot are significant pests of common beans in terms economic impact. The wounds caused by the feeding BSM act as entry points to rot‐causing pathogens. objective this paper is assess disease associated with maggots evaluate insecticides for managing on west Hararghe, Ethiopia. This study contained two parts survey field experiment. part was conducted at different bean growing agro‐ecologies Hararghe zone namely Oda Bultum, Habro, Chiro districts, while experiment Habro district, Bareda, Bultum University farm site. Twenty farms were chosen random from four kebeles each district occurrence impact separately, well their interactions. All roots inspected existence BSMs pathogens responsible disease. findings indicated that there notable occurrences diseases areas examined, statistically results ( p < 0.05). Rhizoctonia solani , Pythium spp., Fusarium spp. major isolated. Ophyiomia phaseoli dominant surveyed districts. incidence fly computed a difference 0.05) among highest interaction (50.85%) obtained chiro followed (36.04%). least (26.97%) recorded district. Six insecticides, Confidor SL 200, Karate 5% EC, Dimeto 40% Alpha guard, Apron Star 42 WS, Bravo EC (W/V), tested against an unsprayed control differences. Common agronomic parameters showed variations 0.0001–0.05) treatments compared control. Grain yield ranged 1095 2950 kg/ha observed treatments. 200 WS dimethoate significantly reduced number increased component parameters.

Language: Английский

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Beyond the Headlines: The Influence of Insurance Pest Management on an Unseen, Silent Entomological Majority

Frontiers in Sustainable Food Systems, Journal Year: 2020, Volume and Issue: 4

Published: Dec. 9, 2020

For most of the last two decades, insect pest management in key grain and oilseed crops has relied heavily on an insurance-based approach. This approach mandates a suite tactics prior to planting absence data. Because there is little flexibility for using these individually, producers have adopted this full practices despite mounting evidence that some components do not provide consistent benefits. In North America particular, preventive led steep increases use neonicotinoid insecticides subsequent neonicotinoids soil water within crop fields beyond. These been accompanied by host non-target effects clearly studied pollinators natural enemies. Less attention given practice upon many thousands aquatic species are often cryptic offer negligible, or undefined, clear benefits humans their commerce. A survey literature reveals as serious terrestrial species, more difficult address. By focusing charismatic defined services, we likely dramatically under-estimating wider environment. Given base demonstrating yield advocate return largely-abandoned IPM principles readily accessible alternative path.

Language: Английский

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Using mathematical models to evaluate germination rate and seedlings length of chickpea seed (Cicer arietinum L.) to osmotic stress at cardinal temperatures

PLoS ONE, Journal Year: 2021, Volume and Issue: 16(12), P. e0260990 - e0260990

Published: Dec. 17, 2021

Cicer arietinum is the 3 rd most important cool season legume crop growing in vast arid and semi-arid regions of world. A lab experiment was designed using hydrothermal time model (HTT) to investigate chickpea seed germination (SG) behavior, cardinal temperatures responses across fluctuating ( T s ) water potentials Ψ ). Seeds var. NIFA 1995 were germinated at six constant (7, 14, 21, 28, 35 42°C) each having following five potentials: 0, -0.2, -0.4–0.6 -0.8 MPa. Germination percentage (G%) decreased significantly (* P ≤ 0.05) from 86.7% 28°C -0.2 MPa 10% 7°C. The rate (GR = 1/t 50 against different percentiles exhibited that linear increase observed GR pattern above below o. Based on confidence intervals coefficients R 2 : 0.96), average 4.7, 23 44.2°C for base b ), optimal o ceiling c respectively. θT 1 value maximum decreases with decreasing (-0.8 MPa). In comparison control, also highest 28°C. thermal (TT) concept well fitted fraction data distilled an increasing 0.972. hydro θ H) increased then when > . ѱ b(50) irregularly varied , σ recorded lowest (0.166 MPa) (0.457 statistical analysis, temperatures, HTT) findings HTT gives insight into interactive effect courses under varying environmental conditions.

Language: Английский

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Future of Insecticide Seed Treatment

Sustainability, Journal Year: 2021, Volume and Issue: 13(16), P. 8792 - 8792

Published: Aug. 6, 2021

Seed treatment as a method of local application pesticides in precise agriculture reduces the amount used per unit area and is considered to be safest, cheapest most ecologically acceptable protecting seeds young plants from pests early stages their development. With introduction insecticides neonicotinoid group mid-1990s, frequency seed increased. Due suspected negative effects on pollinators, these are banned European Union. The ban has therefore led reduction number active substances approved for an increased re-use pyrethroids well other organophosphorus insecticides, which pose potentially very serious risks, perhaps even greater than those neonicotinoids. objective this review analyze advantages disadvantages potential role insecticide reducing impact environment. main disadvantage that it been widely accepted become prophylactic protective measure applied almost all fields. This contrary principles integrated pest management leads input into environment, by treating larger hectares with lower ingredient, beneficial entomofauna. In addition, studies show due approach, economic technical justification often questionable. Extremely important quality implementation correct processing procedure selection appropriate have proven problematic case neonicotinoids withdrawal treatments oilseed rape sugar beet problems range affecting crops at stage growth. results present indicate good efficacy ingredients belonging anthranilic diamides, cyantraniliprole chlorantraniliprole maize, soybean, rice above-ground part plant, but not wireworms. Good controlling wireworms maize shown naturalites group, spinosad, currently treat vegetable crops, mainly onions, control onion flies crops. only fits when treated sown land where there positive prognosis infestation.

Language: Английский

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Quantifying Early-Season Pest Injury and Yield Protection of Insecticide Seed Treatments in Corn and Soybean Production in Ontario, Canada

Journal of Economic Entomology, Journal Year: 2020, Volume and Issue: 113(5), P. 2197 - 2212

Published: June 3, 2020

A 4-yr study was conducted comparing the efficacy and value of fungicide-only (FST), neonicotinoid insecticide + fungicide (NST), diamide (DST) seed treatments for commercial corn Zea mays L. soybean Glycines max (L.) Merr. production in Ontario, Canada. Plant stand, plant vigor, above- below-ground insect injury, yield were assessed on 160 field-scale experiments. Experiments also early-season incidence abundance using newly legislated thresholds NST use Ontario in-season destructive sampling. Wireworms (Coleoptera: Elateridae) white grubs Scarabeidae) frequently observed at experimental sites; however, rarely met injury levels led to loss. Of 129 31 sites, 8 6%, respectively, had a positive response use. Across all 0.1 -0.05 Mg ha-1 with soybean, respectively; costs associated recovered only 48 23% based average grain prices yields during study. Infrequent economic absence consistent DSTs throughout 4 yr indicate that widespread seed-applied insecticides is unlikely provide benefit producers. These data highlight an opportunity reducing input costs, environmental loading, nontarget effects without adverse outcomes

Language: Английский

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Carbon benefits of enlisting nature for crop protection

Nature Food, Journal Year: 2022, Volume and Issue: 3(5), P. 299 - 301

Published: May 5, 2022

Language: Английский

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Stay true to integrated pest management

Science, Journal Year: 2021, Volume and Issue: 371(6525), P. 133 - 133

Published: Jan. 7, 2021

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Language: Английский

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