Resumen

ZAMORA MORALES, Bertha Patricia et al. Formulación de mezclas de sustratos mediante programación lineal . INCI [online]. 2005, vol.30, n.6, pp.69-81. ISSN 0378-1844.

The purpose of the present study was to formulate substrate mixtures through lineal programming, using the physical and chemical properties of seven organic and inorganic substrates: Tezontle, Agrolita, Peat-mossâ, vermicompost from kitchen waste, compost of goat manure and straw, vermicompost of agave residues and germinase (coconut fiber), using the software BLP88. Design variables were established (volume balance, organic matter, total porous space and field capacity) and final values for each mixture to be designed (restrictions) were also set. The object function was to minimize costs in terms of three levels of restriction value for each of the variables designed. Feasible mixtures were obtained from the combination of design variables. Lineal programming reduced the number of feasible mixtures by 93%. In order to evaluate the design criteria, 25% of the feasible mixtures were selected, which were reconstructed with the defined proportions of each original material. The results indicated that the values for each one of the variables evaluated were within the pre-established limits. Thus, lineal programming can be use as a reliable method for substrate mixture formulation.

Palabras clave : Agrolita ; Composta ; Diseño de Mezclas ; Germinasa ; Tezontle ; Vermicomposta .