A Background on Paraquat
Paraquat has been used for decades as a broad-spectrum, post-emergent herbicide. Its effectiveness in controlling weeds makes it an essential tool for many growers, particularly in combating herbicide-resistant species. However, it has also faced criticism due to its acute toxicity and allegations linking it to Parkinson’s disease.
According to Gabriele Ludwig, director of environmental policy at the Almond Board of California, “Paraquat is a restricted-use pesticide, meaning only individuals with specialized training can sell and apply it. Over the years, the EPA has implemented additional mitigation measures to ensure its safe use.” These include enhanced safety protocols and training requirements for applicators.
Ludwig also emphasized the broader challenge of herbicide resistance. “New chemistries in herbicides have been almost nonexistent in the last 15-20 years. Resistance to widely used compounds like glyphosate makes having access to alternatives like paraquat critical for effective weed management.”
What This Means for Growers
Paraquat’s future in California is uncertain as DPR’s evaluation progresses. Ludwig points out the importance of staying informed and engaged for almond growers and others who rely on the herbicide. “Paraquat may not be the most widely used compound, but it’s a valuable alternative to glyphosate, offering flexibility in weed management.”
For now, the herbicide remains available under current restrictions. Growers are encouraged to follow updates from DPR.
