02163naa a2200217 a 450000100080000000500110000800800410001902200140006002400530007410000160012724501570014326000090030052014660030965300260177565300360180165300140183770000170185170000160186870000160188477300450190020932062019-02-06       2019    bl uuuu     u00u1 u    #d  a0972-15257 ah https://doi.org/10.1007/s12355-018-0638-72DOI1 aPEREIRA, W.  aSugarcane productivity as a function of nitrogen fertilization and inoculation with diazotrophic plant growth-promoting bacteria.h[electronic resource]  c2019  aSugarcane ratoons respond to nitrogen fertilizer application, but the N efficiency is low. Diazotrophs applied as a growth promoter bacterium can influence crop yield by several mechanisms, including a greater root growth and higher N absorption. The objective of the present work was to evaluate the stalk and sugar yields, and the economic index of sugarcane as a function of nitrogen fertilization and inoculation with diazotrophic plant growth-promoting bacteria (DPGPB). Two experiments were implemented in areas of two sugarcane mills in the state of São Paulo, Brazil: one in the Diamante Mill and one in the Santa Helena Mill. The experimental design was a randomized complete block with four N-fertilizer doses (0, 50, 100 and 150 kg ha?1), with or without DPGPB inoculation using five replicates. The application of the inoculant promoted a productivity increase in the Diamante Mill for all treatments with N, even in the absence of N-fertilization, while at the Santa Helena Mill that occurred with the 50 kg ha?1 dosage. The inoculation with DPGPB, together with the application of the 50 kg N ha?1 dose, achieved the highest economic return at both mills. The application of the inoculant associated with a low dose of N-fertilizer was profitable and proven feasible for field application. The results evidenced the viability of the technology for sugarcane production, with gains in productivity and a possible reduction in nitrogen fertilizatio  aDiazotrophic bacteria  aGrowth promotion Sustainability  aInoculant1 aSOUZA, J. S.1 aSCHULTZ, N.1 aREIS, V. M.  tSugar Techgv. 21, n. 1, p. 71?82, 2019.