This phrase is actually an advertising slogan used in Spain by a now defunct Catalan restaurant franchise called Bocatta. It was associated with a television spot in 2003 where the hardness of the work on the farms was shown in an ironic and cartoonish way, to end with the image of their products already in the restaurant's exhibitors and with the phrase "Stay only with the best of the field". But this case remained in the history of Iberian advertising when the Union of Peasants of Catalonia and the Valencian Association of Farmers filed a complaint and even initiated a boycott of the chain because they denigrated the image of rural workers 128530; . And finally the advertising had to be removed from the air by the pressure.
The countryside has interesting things, pure air, food, etc. , for city dwellers it has no comforts but if one sees the best that has well worth the phrase "stay only with the best of the field" and not with the bad