phytophtora early in the year

[RayR]

Originally Posted by Itoero

That makes sence..
Do you know of another silicic acid input?

An amorphous silicon dioxide like Diatomaceous Earth would provide a slow release of silicic acid. Faster that a crystalline form, but still pretty slow.

Quick available silicic acid sources would be Pyrophyllitic clay, a natural rare earth source containing largely silicate salts and a wide range of other minerals.
Otherwise Potassium Silicate which is widely available for agriculture and hydroponics.