Use of the "non-weed" concept in traditional tropical agroecosystems of south-eastern Mexico

The use of a "non-weed" concept by traditional agriculturalists in a tropical lowland environment is discussed. Interviews demonstrated that the non-crop components of cropping systems are classified according to use potential on one hand, and effects on soil and crops on the other. A detailed vocabulary for the management of these plants is presented. Such a classification indicates that local farmers understand the intricate role of non-crop plants in their agricultural activities, in direct contrast with modern day agriculture which considers all weeds as noxious, and thus to be eliminated. The ecological importance of this concept, and its potential contribution to a design for overall agroecosystem management is discussed. (author)