02101naa a2200265 a 450000100080000000500110000800800410001902200140006002400390007410000210011324501420013426000090027652012770028565000110156265000150157365300260158865300250161470000200163970000220165970000200168170000210170170000190172270000230174177300710176420975362018-11-07       2018    bl uuuu     u00u1 u    #d  a1835-27077 a10.21475/ajcs.18.12.06.PNE5242DOI1 aMATTAR. E. P. L.  aResponse of Cratylia argentea (Desvaux) O. Kuntzeto inoculation with Rhizobium sp. and Bradyrhizobium sp. strains.h[electronic resource]  c2018  aCratylia argentea is a neotropical leguminous shrub that exhibits symbiosis with nitrogen (N) fixing bacteria and high levels of protein. Thus, it has potential for animal feed and green manure. In spite of its potential, few cultivars are registered for the species and there is little information in regard to its interaction with N-fixing microorganisms. The aim of this study was to evaluate the effect of inoculation with rhizobium strains on the growth and concentration of N in Cratylia rgentea. Seeds were inoculated with two strains of Rhizobium sp.,CR 33 (BR10243) and CR42 (BR10244), and four strains of Bradyrhizobium sp., CR52 (BR10257), CPACB10, SEMIA 6464 (BR3262), and SEMIA 6462 (BR3267), and sown in pots filled with sand and vermiculite in a greenhouse. After 150 days we evaluated the number of nodules, shoot and nodules dry matter, total nitrogen and crude protein contents for the shoots. The plants inoculated with CR 52 exhibited nodulation, with nodular efficiency of 0.189 and relative efficiency of 66.14%; it is possible to observe the effect of nodulation as of 85 days after sowing. Based on the obtained results it was identified the strain that showed symbiosis with C. argentea and presents potential to be used as a commercial inoculant.  aForage  aNodulation  aBiological N fixation  aRoot nodule bacteria1 aBARROS, T. T. V1 aBRASILEIRO, B. P.1 aMATTIELO, E. M.1 aCOELHO, M. R. R.1 aGAMA, G. F. V.1 aDIAS, D. C. F. dos  tAustralian Journal of Crop Sciencegv. 12, n. 6, p. 849-854, 2018.