Promotion of the Canavalia ensiformis L. growth by co-inoculation of Rhizobium strains and mycorrhizal fungi in brown soil without carbonates
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Abstract
One of the alternatives for the requirements reinstatement of coffee in nitrogenous is the use of Canavalia ensiformis L. as what is of importance the increment of their biomass. In a randomized blocks factorial design was studied the effect of 4 Rhizobium strains and 5 strain of mycorrhizal fungi on to the growth of Canavalia indicators.The Rhizobium strain used were Can 2003a, Can 2003b, Can 3 and Can 5 with a title of 108-109 UFC. As EcoMic strains were used: G. cubense, F. moseae, R. intraradices y C. claroideum each one with 20 spores’ • gram-1 of inoculum. The height, leaves number, nodules number and the fresh and dry mass of the plants were evaluated. Data were processed using a factorial variance analysis and halves were compared by the Duncan docima. Strain Can 2003b increased the dry mass significantly and it was superior to the rest of the strains of Rhizobium. Among the HMA strains, G. cubense like was superior and it showed a efficiency index that oscillated between 9 % and 91,5 %.The biggest increments of dry mass were achieved with the combination Can 5-G. cubense. With the Rhizobium Can 2003b and the different strains of HMA were obtained a second treatments group as alternative. Native strain of HMA showed positive results with Rhizobium Can 2003b and Can 2003 strains. A depressive effect of the dry mass was observed from the Canavalia when using Can 2003a independently of the strain of HMA inoculated.
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