How do phosphonates work? Foliar uptake of PO3 (rather than the fertilizer form of PO4) sends a stress signal through the plant and results in production of higher levels of antimicrobial compounds that deter or slow infection. This is known as systemic acquired resistance (SAR).
What do phosphonates do?
Phosphonates are strong complexing agents used in bleach-containing detergents for the stabilization of the active by preventing its catalytic decomposition due to heavy metal traces.
Are phosphonates harmful?
Phosphonates are of low to moderate toxicity to people. If phosphonates are ingested, they are not easily absorbed by the digestive system and are rapidly eliminated from the body via faeces. Intake through the skin is also unlikely to cause harm due to the low potential for phosphonates to accumulate in the body.
