About this episode
Dr. Russell Sharp reviews research on paracetamol (acetaminophen/Tylenol) and its effects on plants in hydroponics and horticulture. He explains how the drug is taken up by roots and leaves, how plants detoxify it, and how even small amounts can trigger oxidative stress, impair photosynthesis and inhibit growth in species like lettuce and maize.
The episode covers evidence of DNA methylation changes in maize, that silicon fertiliser can mitigate damage, and that paracetamol is generally detrimental rather than beneficial to plants. Practical takeaways: avoid applying paracetamol to crops, use proper water filtration, and rely on ozone/UV or RO for removing contaminants.
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