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The objective was to determine the best dose of fertilizer and planting density (D) for the cultivation of corn 'H-155' and black bean shrub '8025' three topological arrangements (AT). The selection criterion was the biggest gain, relative efficiency of land (ERT) and relative efficiency of gain (ERG). An experiment is established in split plot in the Valley of Mexico Experimental Station, in 2012. There were three large plots of corn and beans AT: 1) Simple corn and beans (CSMF); 2) intercalated in two alternating rows (MMFF); and 3) interspersed in an alternating groove (MFMF). The small plot consisted of 25 treatments of a rotatable central composite design with 5 levels of nitrogen (N), phosphorus (P), potassium (K) and D. The grain yield (Ym) and stover (Yr) was determined corn and bean grain yield (Yf). The greatest gain ($33 942) was obtained MMFF with the combination 34-0-40 kg of N-P-K and 29 500 plants in 0.5 ha corn and 11-0-30 kg of N-P-K and 80 000 plants 0.5 has of bean. In MMFF maximum ERT was 1.29 and ERG was 2.01. Most ESRD in MFMF was 1.27 with a 1.58 ERG, both associated with a high level of Ym 7.09 0.5 t ha -1 .

Optimización económica de N, P, K y densidades de plantación en maíz y frijol intercalados