In ag the word "productive" is quite expansive in definition. For ex; I raise tomatoes but store bought are cheaper in price but then add in the intangibles such as taste, safety, self satisifaction of raising one's own and the equation jumps in size. But then again I tend to side with the "hippie farmers" versus the agribusiness types anyway.
To be honest, I don't know much about Panama, but I tend to perceive all of the latin america countries as having a substantial number doing that.
However difficult sustinance farming may or may not be, it is not very productive and makes it difficult to feed the nation.
There is a degree of romanticism with those operations tho. The reality is that Juan Valdez quit growing coffee beans long ago because he couldn't compete. Instead, he now grows coca.
Good thing we don't have to rely on "hippie farmers" to feed 300 million people.