There are many areas of the world (often labeled 'backwards', by people who are actually the 'backward' ones) where farms have been in the same family for many generations. Regions of Soviet Georgia, Albania, Montenegro, and many others on most continents.
These areas are usually remote rural areas where families are too poor to buy fertilizers, tractors, and other modern commodities (like electricity). If you don't have a spring/stream or (hand pumped) well, you cannot survive. By default, their crops are organic - actually, "beyond organic".
Their vodka is made from their home grown potatoes. Their cigars are from their tobacco. Momma makes a fresh batch of yogurt each day. The home beverage (besides
water) would be a tea from the garden...a cup of
coffee would be a luxury to indulge in on their trip to town. If they want to buy a beer or wine, they need to take their own bottle to town to have it filled.
Their
land does not get depleted because they are trying to sustain their families, not '
feed the world'. Whatever they need is either grown on their farm, or traded with a neighbor. By necessity, each farm is a
polyculture.
Once we step out of the 'modern world', there are thousands of such farms.
It is the 'modern world' where we have learned to do it 'backwards'.