Silicon-Based Immunity
One of the most dynamic research streams in agricultural science relates to the investigation of plant immunity and the triggers that activates the plant to fight its own battles. It is now understood that the plant has an immune system, which can be both monitored and magnified. Salicylic acid, for example, the biochemical upon which aspirin is based, activates the plant’s immune system.
Aloe vera is the richest natural source of this compound and many of our growers benefit from the inclusion of this plant extract in their programs.
The whole article makes a good read...
http://blog.nutri-tech.com.au/silica-the-hidden-cost-of-chemicals/
I just clicked when I saw one of the famous ferts was around 70% silica..and Aloe is silica...so I Thought I'd give it a try...
I feed it to me and hubby...
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..why not the plants