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Related Experiment Video

Updated: Dec 27, 2025

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice Oryza sativa ssp.

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice Oryza sativa ssp.

Published on: January 28, 2020

Pesticides Decrease Bacterial Diversity and Abundance of Irrigated Rice Fields.

Michael Onwona-Kwakye^1,2, Kimberly Plants-Paris³, Kadiatou Keita³

¹Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands.

|February 29, 2020

Summary

This summary is machine-generated.

Pesticide exposure significantly reduces soil bacteria abundance and diversity in rice fields. Some bacterial genera decreased, while others like Bacillus and Pseudomonas increased, highlighting impacts on soil ecosystems.

Keywords:

irrigated fields pesticides pesticides and bacteria soil bacteria soil microbiota and diversity

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Last Updated: Dec 27, 2025

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Published on: January 28, 2020

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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Published on: May 15, 2017

Area of Science:

Soil microbiology
Environmental science
Agricultural science

Background:

Soil bacteria are vital for nutrient cycling and soil health.
Pesticides are widely used in agriculture, leading to soil contamination.
Pesticide contamination can adversely affect beneficial soil microbial communities.

Purpose of the Study:

To investigate the impact of common pesticides on irrigated rice field bacterial communities.
To assess changes in bacterial abundance and diversity due to pesticide exposure.
To identify potential bacterial candidates for bioremediation.

Main Methods:

Soil samples were collected from unexposed, pesticide-exposed, and residual exposure areas.
Bacterial cultures were grown under aerobic and anaerobic conditions.
DNA was extracted and analyzed using 16S rRNA sequencing.

Main Results:

Pesticide exposure led to a significant decrease in overall bacterial abundance and diversity.
Specific genera like Enterobacter and Staphylococcus declined, while Bacillus and Pseudomonas increased.
Diversity indices (Simpson, Shannon) and canonical correspondence analysis confirmed reduced bacterial diversity and altered composition.

Conclusions:

Pesticide use negatively impacts soil bacterial communities, reducing diversity and altering composition.
Certain pesticide-resistant bacteria were identified, suggesting potential for bioremediation applications.
There is a critical need for sustainable agricultural practices, including integrated pest management, to mitigate pesticide effects on soil ecosystems.