01230naa a2200289 a 450000100080000000500110000800800410001902200140006002400510007410000210012524501530014626000090029952003280030865000200063665000130065665300330066965300230070265300240072570000160074970000220076570000200078770000200080770000170082770000200084470000180086477300580088220911602018-11-16       2018    bl uuuu     u00u1 u    #d  a0032-079X7 ahttps://doi.org/10.1007/s11104-018-3627-42DOI1 aARAUJO, K. E. C.  aChanges in 15N natural abundance of biologically fixed N2 in soybean due to shading, rhizobium strain and plant growth stage.h[electronic resource]  c2018  aThe evaluation of 15N abundance of N derived from biological N2 fixation (BNF) in legume shoots (?B S ? value) is essential for quantifying BNF inputs to field-grown legumes. The aim of this study was to investigate the impact of shading, development stage of soybean (Glycine max) and rhizobium strain on the ?B S ? value.  aLight intensity  aSoybeans  aBiological nitrogen fixation  aBradyrhizobium spp  aN natural abundance1 aVERGARA, C.1 aGUIMARÃES, A. P.1 aROUWS, J. R. C.1 aJANTALIA, C. P.1 aURQUIAGA, S.1 aALVES, B. J. R.1 aBODDEY, R. M.  tPlant and Soilgv. 426, n. 1–2, p. 413–428, 2018.