Quote:
Originally Posted by Jake
The treatment for this problem used to be something called Cheshunt
Compound but, just like everything that's useful in pest/disease
control, the rules changed and it's no longer on the market. The only
currently available substitute is Bayer Fruit and Vegetable Disease
Control though there are many who are skeptical about its
effectiveness.
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I accidentally bought enough Cheshunt to keep me going for the rest of my life... You only need a very little bit for a few trays of seeds.
Cheshunt compound is a mix of copper sulphate and ammonium carbonate. Since I would imagine you can easily enough buy those ingredients separately, or at least ammonium bicarbonate which would be about as good (it is used as a food additive), it shows the petty-mindedness of the regulations. Basically, for a preparation to be sold, someone has to be prepared to pay for certain tests, regardless of whether the ingredients are individually allowed to be sold. Bordeaux mixture, used almost universally for spraying on grape vines against fungal disease, and would probably be similar effective, though I read something about it being no longer available in the amateur market, because no one could be bothered to pay for the tests.