Increased Efficacy of Entomopathogenic Nematode-Insecticide Combinations Against Holotrichia oblita (Coleoptera: Scarabaeidae).

J Econ Entomol

Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Key Laboratory of Integrated Pest Management in Agriculture, Guangdong Institute of Applied Biological Resources, Guangzhou, China.

Published: February 2017

Combinations of entomopathogenic nematodes Steinernema longicaudum X-7 and Heterorhabditis bacteriophora H06 with chlorantraniliprole, diflubenzuron, and imidacloprid insecticides at different rates for the control of the white grub, Holotrichia oblita Faldermann (Coleoptera: Scarabaeidae), were evaluated both in the laboratory and in peanut fields. In the laboratory, the combinations had a synergistic or additive effect on the second-instar larvae of H. oblita and caused faster mortality than one nematode species or insecticide alone. Heterorhabditis bacteriophora-chlorantraniliprole and H. bacteriophora-imidacloprid showed synergistic effects on the larvae. When higher concentrations of the insecticides were combined with nematodes, the stronger synergistic effects were found. In peanut fields, S. longicaudum-imidacloprid, H. bacteriophora-imidacloprid, or H. bacteriophora-chlorantraniliprole also showed synergistic effects against the larvae. The three nematode-insecticide combinations produced similar percentage reductions of the grub larvae and less percentages of injured legumes, compared with the chlorpyrifos treatment. Cost-benefit analysis showed that H. bacteriophora 5.0 × 103 infective juveniles (IJs) per plant (equal to 7.5 × 108 IJ ha-1) combined with imidacloprid at the recommended concentration is a practical strategy for the practitioner to manage the white grubs in the peanut production.

Download full-text PDF

Source
http://dx.doi.org/10.1093/jee/tow241DOI Listing

Publication Analysis

Top Keywords

synergistic effects
12
nematode-insecticide combinations
8
holotrichia oblita
8
coleoptera scarabaeidae
8
peanut fields
8
effects larvae
8
increased efficacy
4
efficacy entomopathogenic
4
entomopathogenic nematode-insecticide
4
combinations
4

Similar Publications

Chronic pain and restricted mobility, hallmark features of rheumatic diseases, substantially affect patients' quality of life, often resulting in physical disability and emotional distress. Given the long-term nature of these conditions, there is a growing interest in complementary therapeutic approaches, emphasizing the need to explore non-pharmacological treatments. Hydrotherapy, balneotherapy, and mud therapy have emerged as effective interventions to alleviate pain, reduce inflammation, improve joint mobility, and enhance overall physical and mental well-being.

View Article and Find Full Text PDF

A cost-effective industrial TiOSO solution was employed to fabricate visible light active sulfur-doped titanium dioxide (S-TiO) via a facile hydrothermal method. The effect of calcination temperature on morphology, particle size, crystallinity, and photocatalytic property of S-TiO was systematically investigated. Successful incorporation of sulfur into TiO was confirmed by carbon-sulfur analysis, X-ray photoelectron spectroscopy (XPS), and Energy dispersive spectrometer (EDS).

View Article and Find Full Text PDF

This paper presents a novel and comprehensive control framework for the Rotary Inverted Pendulum (RIP), focusing on a hybrid control strategy that addresses the limitations of conventional methods in nonlinear and complex systems. The proposed controller synergistically combines an Optimized Fuzzy Logic Controller (OFLC) with Sliding Mode Control (SMC), leveraging the strengths of both techniques to achieve superior performance. The integration of Particle Swarm Optimization (PSO) into the OFLC significantly enhances its adaptability and precision, while the SMC law provides robust disturbance rejection and system stability.

View Article and Find Full Text PDF

Antifungal activity of essential oils and their potential synergistic effect with amphotericin B.

Sci Rep

December 2024

State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.

Candida albicans is a common opportunistic pathogen, causing infections ranging from superficial to bloodstream infections. The limited antifungal options and rising drug resistance challenge clinical treatment. We screened 98 essential oils and identified 48 with antifungal activity against Candida albicans at 1% concentration, determining their minimum inhibitory concentrations (MIC).

View Article and Find Full Text PDF

Plasma phosphorylated tau and neuropsychiatric symptoms in dementia with Lewy bodies.

Alzheimers Dement

December 2024

Centre for Healthy Brain Ageing, Department of Psychological Medicine, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, UK.

Introduction: Neuropsychiatric symptoms (NPSs) are common in dementia with Lewy bodies (DLB) but their neurobiological mechanisms are poorly understood.

Methods: NPSs and cognition were assessed annually in participants (DLB n = 222; Alzheimer's disease [AD] n = 125) from the European DLB (E-DLB) Consortium, and plasma phosphorylated tau-181 (p-tau181) and p-tau231 concentrations were measured at baseline.

Results: Hallucinations, delusions, and depression were more common in DLB than in AD and, in a subgroup with longitudinal follow-up, persistent hallucinations and NPSs were associated with lower p-tau181 and p-tau231 in DLB.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!