It's been that way for a long time, Eastern Europe has always been agricultural and people were into growing the food they eat on the
land outside the back door.
One of the misunderstandings from the Communist era was the discussion of "private plots" in the Western media when they were talking about Soviet or Eastern bloc agriculture. They made "private plots" sound like the allotments that are common in Britain or kitchen gardens that are common in Western Europe. Not exactly. A "private plot" or its modern day equivalent, the "dacha garden" is a piece of out-of-the-way dirt that has no centrally planned purpose and is too small to bother with. Think a few dozen tomato plants along a railroad embankment; asparagus planted and tended by someone along a government
irrigation ditch; some plum
trees planted along a highway. This is guerrilla gardening being practiced long before the term was coined in the West.
If you travel around Eastern Europe and the former Soviet Union and you have a good eye, you can spot these impromptu gardens. But you have to have a good eye, because if everyone know about them, well, the productivity of the "private plot" would go down as more garden pests of the two-legged variety descended upon them. One of the reasons they can do this is because people live in town and not out in the country, which is popular in the U.S. There, you may have a 6-story apartment block and to the east of it nothing but hectares and hectares of sugar beets as far as the eye can see. So for someone with an apartment in that 6-story block, if they want to have some extra food security, a "private plot" if you will, they go on a trek every day. Along the railroad track, under the trestle, then walk up the creek a while until you get to a gully that is too steep for the tractors tending the sugar beet field to plow, and you may have your .89 to 2.75 hectares that the article mentions. The plots I saw never looked that big, but I was just eyeballing.
So that's where the 51% referred to in the article comes from. It's not the big crops that rely on mechanized equipment and industrial production methods, resulting in harvests that are very cheap on a weight basis: wheat, rye, sugar beets, sunflowers. It's cabbage, tomatoes, raspberries, cabbage, potatoes, carrots, and did I mention cabbage? They do eat a lot of cabbage: fresh cabbage, pickled cabbage, cabbage soup, cabbage rolls, cabbage stuffed into a bun and baked.
But these "dacha gardens" are not what you could call well designed
permaculture. The word "opportunistic" is far more descriptive than designed, although it uses elements that we recognize as
permaculture: hedges of elderberry or coppiced fruit trees as borders; hop vines climbing through the nearby trees creating layers and guilds; companion planting like letting dill opportunistically pop up anywhere it wants to and encouraging it instead of weeding it out.
They have stumbled into
permaculture more out of economic necessity than anything else. The reason they have done so one of our guiding principles in
permaculture: because it is sustainable.