科研之友
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摘要
the aim of this study was to evaluate the effects of seed inoculation with rhizobium tropici and nitrogen and molybdenum fertilization on the performance of the common-bean (phaseolus vulgaris l.). a complete randomized block design with four replicates was used, in a factorial arrangement 2x2x2, with the combinations of absence and presence of seed inoculation and nitrogen (n) and molybdenum (mo) fertilization. seeds inoculation was just before sowing with a peat inoculante composed by the strain ciat 899 (semia 4077), n was provided at sowing (10 kg.ha-1) and coverage (50 kg.ha-1) when the plants showed the third trifoliate sheet expand and mo was applied by foliar spraying with 60 g.ha-1 when plants were at beginning of flowering . no effect of treatments on the dry mass of roots and the number of pods per plant was observed. n fertilization reduced nodulation of plants, however, n fertilization lead to an increase in height and dry mass of bean shoots. it was also observed that plants fertilized with n but in the absence of mo shoed heavier grains. the interactions between n and mo fertilization with inoculation of seed negatively affected the leaf n content and the number of grains per pod. the inoculation of seed in beans provided grain yields similar to those provided by the treatment with n fertilization.
