Resumo

MARTIN ALONSO, Gloria M; RIVERA ESPINOSA, Ramón  e  PEREZ DIAZ, Alberto. Effect of jack bean, mycorrhizal inoculation and nitrogen fertilizer dose on maize cultivation. cultrop [online]. 2013, vol.34, n.4, pp.60-67. ISSN 0258-5936.

In order to evaluate the influence of inoculation with arbuscular mycorrhizal fungi (AMF), the period of synchrony between the incorporation of green manure and planting Canavalia ensiformis and fertilization doses on maize growth, was conducted this work, which developed in microplots conditions, repeated for two years, in the period between the months of August to October of 2003 and 2004, in areas of the National Institute of Agricultural Sciences (INCA) of Cuba, in a Rhodic Nitisol soil. We studied three doses of mineral nitrogen fertilizer (0, 40 and 80 kg ha^-1 of N), two periods of synchrony between incorporating canavalia and planting the main crop (7 and 21 days) and two levels of mycorrhizal inoculation corn factor (with and without inoculation) in a completely randomized design under trifactorial arrangement (3x2x2) and three reference controls. There was interaction between the factors under study, finding that the combined use of mycorrhizal inoculation of corn and canavalia is also diminishing doses of mineral fertilizer needed for the crop to reach a dry mass and nutrient content similar to those obtained with the high dose of nitrogen fertilizer studied. Mycorrhizal colonization was found in all the treatments, but the most significant values were found in treatments with AMF inoculation and application of two nitrogen sources. The sync time of seven days resulted the optimum in the conditions of this study.

Palavras-chave : Canavalia ensiformis; Glomus; Zea mays; green manures; arbuscular mycorrhizas.

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