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Idesia (Arica)

versión On-line ISSN 0718-3429

Resumen

SANCLEMENTE REYES, Oscar Eduardo; SANCHEZ DE PRAGER, Marina  y  PRAGER MOSQUERA, Martín. Agroecological practices, michorrization and productivity of intercropping corn - soybean (Zea mays L. - Glycine max L.). Idesia [online]. 2018, vol.36, n.2, pp.217-224. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292018005000301.

The influence of agroecological practices, michorrization and yield of intercropping corn-soybean in a Typic Haplustert of the Experimental Center of the National University of Colombia (Candelaria- Colombia) was evaluated. In 2011-II, Mucuna pruriens- corn was planted and its plant residues were used as green manure (GM) or mulch (OM). In 2012-I, corn-soybean was planted in rotation on experimental design in split plots (GM, OM) and natural fallow (FA), with three replicates. Composting, fertilizer NPK (15-15-15) and a control without fertilization, was used in subplots. At flowering, the mycelial length of arbuscular mycorrhizal fungi AMF and its P contribution to plant was assessed. Finally, dry grain yield was estimated. It was noted that the ML increased significantly (p<0,05) activity of AMF (29,7%), and the soybean yield by gradual release of nutrients. The use of NPK in subplots, reduced AMF activity compared with no additional fertilization management, affecting the availability of P in the intercropping by this symbiotic way. The component analysis indicated that OM used with or without composting, benefited both mycorrhizal activity and productivity of corn-soybean intercropping. These results show the benefits of the use of agroecological practices on sustainability of soil resources and productivity of traditional crops.

Palabras clave : Symbiosis rhizosphere; green manures; organic mulches; nutrient cycling; Mucuna pruriens.

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