Quote:
Originally Posted by imp
I try to remember to use RapidStart by General Hydroponics when I transplant my tomatoes/plants to the garden. I use it at half the recommended dosage and it seems to work well. Normal dose id a teaspoon to 5 gallons of water.
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I've tried Rapidstart from some free samples I got from the local grow shop.
My first impressions were that it did seem to increase root growth but I didn't do any side by side comparisons with controls. It may be particularly useful for folks using strictly mineral salt nutrients. I do most of my gardening with organics so it's hard for me to say whether Rapidstart adds any additional value and worth the expense. Probably not I'm thinking. I think a proper experiment would be to test it with mineral salt nutrients alone.
Rapidstart's ingredients combine a small amount of mineral salts, amino acids and a propriety blend of plant extracts. According to GH, the plant extracts are the key ingredients.
One product that does work to promote root growth is AZOS from Extreme Gardening. Strictly a biological product, AZOS is a bacteria, Azospirillum brasilense which has multiple beneficial effects in the rhizosphere including producing Auxins, plant hormones that stimulate root growth.
There is a number of threads here relating to AZOS,
this one contains my results of my first experience and experiment with it.
This is a good blog article on Azospirillum brasilense and what it does.
See here