Background: Exposure of the nematophagous fungus Pochonia chlamydosporia to solar radiation and elevated temperatures before being incorporated into the soil can reduce its survival and efficiency as biocontrol agent.
Aims: A field experiment was carried out to assess the effect of the exposure period on the viability of P. chlamydosporia applied on the soil surface.
Methods: A commercial bionematicide based on P. chlamydosporia was sprayed on soil, and soil samples were collected before and at 0, 30, 60, 90, 120, and 150min after fungal application. Relative humidity (RH), the irradiance (IR), air temperature (AT), and soil temperature (ST) were recorded. The number of P. chlamydosporia colony forming units (CFUs) was evaluated after 20 days of incubation.
Results: P. chlamydosporia survival decreased over the time of exposure on the soil surface. Overall, the number of CFUs decreased by more than 90% at 150min after application. Exposure to RH ≥61%, ST and AT between 25-35°C and 19-29°C, and IR between 1172 and 2126μmol of photons ms induced a negative exponential effect on the survival of the fungus over the time.
Conclusions: Exposure to climatic conditions on the soil surface reduces P. chlamydosporia viability.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.riam.2017.04.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Forest Soil pH and Dissolved Organic Matter Aromaticity Are Distinct Drivers for Soil Microbial Community and Carbon Metabolism Potential.
Microb Ecol
January 2025
State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
The ecological niche separation of microbial interactions in forest ecosystems is critical to maintaining ecological balance and biodiversity and has yet to be comprehensively explored in microbial ecology. This study investigated the impacts of soil properties on microbial interactions and carbon metabolism potential in forest soils across 67 sites in China. Using redundancy analysis and random forest models, we identified soil pH and dissolved organic matter (DOM) aromaticity as the primary drivers of microbial interactions, representing abiotic conditions and resource niches, respectively.
View Article and Find Full Text PDFProbabilistic stability assessment of slope considering soft soil and silty clay foundations.
Sci Rep
January 2025
College of Engineering, Ocean University of China, Qingdao, 266404, China.
Although deterministic analysis can provide initial insights into slope stability, there is no way to reflect the true distribution of soil properties within a slope. To further investigate the effects of the spatial variability of soil properties on the stability and failure mechanism of slope under different foundation types, this study develops a framework combining simple limit equilibrium method (LEM), Monte Carlo Simulation (MCS), and random field to incorporate these factors into slope probabilistic stability analysis. The slope models of two typical foundations (e.
View Article and Find Full Text PDFResearch on bioaugmented slurry remediation of PAHs in actual contaminated soil: screening microbial agents and optimizing key parameters.
Environ Res
January 2025
Environmental Testing and Experiment Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address:
Bioaugmented slurry technology is a sustainable remediation technology for PAHs-contaminated soil. However, the lack of experimental data on the remediation of complex, actual contaminated soils has hindered the practical application of this technology. This study explored the bioaugmented degradation of PAHs using actual soil slurry with and without the addition of microbial agents in the microscopic world.
View Article and Find Full Text PDFSynergistic enhancement in ultra-trace thallium(I) removal using the titanium dioxide/biochar composite.
J Environ Manage
January 2025
Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China. Electronic address:
Thallium (Tl), recognized for its high toxicity, is subject to stringent international regulations regarding its permissible concentrations at ultra-trace levels. In this study, titanium dioxide (TiO) was integrated with potassium (K)-rich biochar to create TiO/biochar (TiO/BC) composites for synergistic enhancement in ultra-trace Tl(I) removal, focusing on achieving concentration below the rigorous local threshold of 0.1 μg/L for drinking water.
View Article and Find Full Text PDFIdentifying the Molecular Signatures of Organic Matter Leached from Land-Applied Biosolids via 21 T FT-ICR Mass Spectrometry.
Environ Sci Technol
January 2025
National High Magnetic Field Laboratory Geochemistry Group and Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, Florida 32306, United States.
Intensification of wastewater treatment residual (i.e., biosolid) applications to watersheds can alter the amount and composition of organic matter (OM) mobilized into waterways.
View Article and Find Full Text PDFWant 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!