Acropetal penetrants

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1. A class of fungicide that enters the plant and is translocated (translocation) upward within the plant through the xylem by way of the transpiration stream.

Xylem-Mobile.png

This illustration shows the upward (acropetal) movement of the fungicide through the plant.
Source: https://pesticidestewardship.org/resistance/FungicideResistance/Pages/Fungicide-Terms-to-Know.aspx