Study Finds That 64% of the World’s Farmland at Risk From Pesticide Pollution

Written by on March 31, 2021 in Environment, Environmental Hazards, Farming with 0 Comments

By | EcoWatch

About one-third of the world's agricultural land is at high risk from pesticide pollution, a new study has found.

The research, published in Nature Geoscience Monday, looked at the use and spread of 92 active pesticide ingredients in 168 countries. They considered an area at risk if the concentration of a chemical exceeded the limit at which it would have no effect, and at high risk if that concentration exceeded the limit by a factor of 1,000.


“Our study has revealed 64 percent of the world's arable land is at risk of pesticide pollution,” University of Sydney Research Associate and the study's lead author, Dr. Fiona Tang said in a University of Sydney press release. “This is important because the wider scientific literature has found that pesticide pollution can have adverse impacts on human health and the environment.”

Further, a total of 31 percent of the land was at high risk, the study authors wrote.

Pesticides, herbicides, and fungicides are widely used to boost productivity in farming, the press release noted. However, they have unintended consequences for human and environmental health. They can enter bodies of water through runoff or by entering the groundwater, contaminating drinking water. Pesticides like chlorpyrifos have been shown to harm the cognitive development of children, while others have been linked to cancer. They also pose a threat to wildlife such as bees and birds.

These threats are why the research is important, Tang told AFP.

“It is significant because the potential pollution is widespread and some regions at risk also bear high biodiversity and suffer from water scarcity,” she said in an AFP article published by Phys.org.

Specifically, 34 percent of the high-risk areas were in regions with high biodiversity while five percent were in water-scarce areas, the study found. Nineteen percent of the high-risk areas were in low or middle-income countries.

Regionally, Asia had the most high-risk land, with China, Japan, Malaysia, and the Philippines especially impacted, the press release said. In Europe, almost 62 percent of agricultural land was at high risk, AFP reported. This was largely due to high concentrations in Russia, Ukraine, and Spain.

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