© MysteryShot/Adobe Stock Prepared by HFFA Research, this study evaluates the economic and environmental implications of continued Metazachlor (MTZ) use in EU oilseed rape cultivation, comparing current usage to scenarios in which the herbicide is withdrawn.
Metazachlor is a widely used herbicide in oilseed rape production, playing a key role in weed management. Despite concerns over the environmental impact of chemical plant protection products, the implications of banning such substances—particularly on yields, farm economics, and environmental sustainability—are often under-assessed. This study addresses that gap with a focused analysis on the EU context.
Using economic and environmental modelling, the study contrasts current MTZ use with two scenarios in which MTZ is no longer applied. It quantifies changes in yield, production volumes, farm income, and broader sustainability indicators, such as land use, greenhouse gas emissions, and water consumption.
Eliminating MTZ could reduce EU oilseed rape yields by nearly 4%, leading to production losses between 400,000 and 550,000 tons.
The resulting economic loss for farmers is estimated at EUR 150–210 million.
A ban on MTZ could trigger global land conversion of 230,000 to 320,000 hectares, with associated increases in CO2 emissions and water use.
The findings highlight the importance of assessing both benefits and risks before regulating critical agricultural inputs.
