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The insights gleaned add nuance to his pointed critiques of agrotechnology and organic farming, but it's the findings on rapid soil restoration that compel.

But campaigners worry about safety and that multi­national agrotechnology firms could take control of the country’s food supply.

One of the few projects to start up here so far, Granpa Farms, is an agrotechnology company from Kanagawa, near Tokyo, that has built eight dome-shaped high-tech greenhouses for hydroponic farming of lettuce and other greens.

"Since 2010, we saw for the first time significant Chinese investments in the real economy in Israel - in traditional industries like MA Industries and also in the high-tech sector, in biotechnology and agrotechnology," Finance Minister Yuval Steinitz told Reuters.