Agricultural Contamination
Agricultural Contamination - Related Videos
08:49
Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Cited by 4 •
2017
This article summarizes the design attributes and the effectiveness of treatment systems that treat urban stormwater and agriculture irrigation runoff to remove pesticides and other contaminants associated with aquatic toxicity.
12:50
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
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Cited by 3 •
2017
With the advancement of technology and the rise in end-user expectations, the need and use of higher temporal resolution data for pollutant load estimation has increased. This protocol describes a method for continuous in situ water quality monitoring to obtain higher temporal resolution data for informed water resource management decisions.
01:16
Contaminants and Errors
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2024
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis. Another key consideration is determining the appropriate number of samples required to...
12:50
Colorimetric Paper-based Detection of Escherichia coli, Salmonella spp., and Listeria monocytogenes from Large Volumes of Agricultural Water
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Cited by 24 •
2014
A protocol involving integrated concentration, enrichment, and end-point colorimetric detection of foodborne pathogens in large volumes of agricultural water is presented here. Water is filtered through Modified Moore Swabs (MMS), enriched with selective or non-selective media, and detection is performed using paper-based analytical devices (µPAD) imbedded with bacterial-indicative colorimetric substrates.
13:16
Assessment of DNA Contamination in RNA Samples Based on Ribosomal DNA
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Cited by 26 •
2018
Here, we present a protocol for tracing genomic DNA (gDNA) contamination in RNA samples. The presented method utilizes primers specific for the internal transcribed spacer region (ITS) of ribosomal DNA (rDNA) genes. The method is suited for reliable and sensitive detection of DNA contamination in most eukaryotes and prokaryotes.
FAQs
Agricultural contamination can spread through several connected pathways. Runoff carries pollutants from land into nearby water, while leaching moves substances downward through soil. Atmospheric deposition can return contaminants to fields or adjacent habitats, and direct application places them at the site of use. These pathways determine which soils, waterways, crops, and ecosystems receive exposure.
Plants and soil organisms may absorb contaminants present in agricultural environments. Once incorporated into living organisms, pollutants can remain available to organisms that feed on them, creating opportunities for bioaccumulation through food webs. This biological transfer matters because contamination can extend beyond the original field and affect wildlife, ecosystem function, and food safety.
The consequences of contamination depend partly on whether pollutants are biological, chemical, or physical and on where they accumulate. Fertilizers, pesticides, animal waste, pathogens, and heavy metals represent different sources and pollutant types. Their movement through soil, water, crops, or organisms can produce distinct concerns, ranging from altered soil biodiversity to threats involving food safety.
Contamination can affect soil biodiversity and aquatic habitats by changing the conditions experienced by organisms in those systems. Pollutants transported from farmland may expose soil organisms, aquatic communities, and wildlife, while accumulation in crops or organisms can extend effects through food webs. Biologists therefore examine both local exposure and broader consequences for ecosystem function.
A monitoring approach should consider farmland, irrigation water, crops, and surrounding ecosystems rather than focusing on a single location. Researchers can examine the presence or buildup of biological, chemical, and physical pollutants alongside possible movement by runoff, leaching, atmospheric deposition, or direct application. This broader view helps connect contamination sources with ecological and food-safety concerns.
Improved land management and remediation strategies can reduce pollutant transport and limit the buildup of contaminants in agricultural systems. Their value lies in addressing both movement through soil and water and accumulation in crops or organisms. Applying these approaches supports safer, more sustainable agriculture while helping protect soil biodiversity, aquatic habitats, wildlife, ecosystem function, and food safety.
Biology provides a framework for tracing how pollutants interact with soil organisms, plants, wildlife, aquatic communities, and food webs. The subject connects environmental exposure with changes in biodiversity, ecosystem function, and the movement of contaminants into organisms and crops. It also helps evaluate implications for human health and develop strategies that support safer agricultural systems.