Achard opens the first sugar beet refinery at Gut Kunern near Steinau in Silesia, at this time a part of Prussia, in 1801, with the support of King Friedrich Wilhelm III.
Achard had planted various sugar-bearing plants on his manor in Kaulsdorf near Berlin in 1789.
He soon preferred sugar beets because of their efficiency.
In the following year he had studied different varieties of beets and the influence of fertilizers.
The research had been interrupted when Kaulsdorf manor burnt down and had to be sold.
Achard later continued on the manor Französisch Buchholz.
