Actually, I think you’re referring to Mexican agronomic policies initiated in the 1950s and 60s, that were subsistence + modest income-based. They were patterned, in part, on U.S. agricultural extension services that allowed farmers to organize (eeck!) and collectively bargain for access to credit markets, along with education about new methods and technology. Think President Bartlett (The West Wing) nominating Norman Borlaug (Nobel Peace Prize 1970) as most significant human of the 20th century.
The downsides you cite were very real, when U.S. agribusiness swept in starting in the 1970s and began transforming the Plan Puebla communities into bulk strawberry producers for the U.S. jam, jelly, and ice cream industries, and whatnot. Captain Queeg was so proud. But his methods saved, conservatively, a billion humans from dying of starvation.
But then, no good deed goes unpunished, given the wolverines of that and our current time.
Reedited to add: Back in the day I could actually tell you how many grams of potash to add to your fertilizer to increase maize (aka corn) yields by X% per hectare…and why “peasants” (now aka women in most developing countries, since they mostly do subsistence agriculture) are among the most entrepreneurial people on the planet.