Ginger tea for anti-fungal, anti-biotic, pesticide?

Crazy idea or not? Will the antibiotic, antifungus properties of ginger root be effective in soil to help cannabis roots? I've tried 1 table spoon of shredded ginger boiled for 1/2 hour. Strained it and mixed it with enough ph balanced water to saturate my J1 plant's soil. No ill effects, no wilting. May help kill gnat larva and/or lessen the root rot they cause.

Anyone else have experience using ginger in cannabis applications?