02690naa a2200397 a 450000100080000000500110000800800410001902200140006002400460007410000180012024501350013826000090027352015660028265000220184865000120187065000180188265000150190065000210191565000230193665000100195965000210196965000290199065300210201965300180204065300080205865300150206665300210208170000190210270000200212170000200214170000230216170000260218470000220221070000210223277300390225321545682023-06-22       2023    bl uuuu     u00u1 u    #d  a2177-51337 ahttps://doi.org/10.14295/CS.v14.39462DOI1 aSIMOES, W. L.  aPlant growth regulator via micro-sprinkler for Palmer mango floral induction in Brazilian semi-arid region.h[electronic resource]  c2023  aApplication of the plant growth regulator paclobutrazol (PBZ) to aid floral induction has been widely performed by mango producers. However, its application has been done manually, resulting in low uniformity of application and losses with labor. The objective of this study was to adjust the PBZ dose to be applied via micro-sprinkler system for floral induction, indicating an efficient management of ?Palmer? mango in the Brazilian semi-arid region. The experiment was conducted at Saúde Farm, located in Petrolina-PE, Brazil, starting in October 2015, with harvests in June 2016 and 2017. The experimental design used was randomized blocks, with five doses of PBZ, applied via irrigation system (T1 - 0.56; T2 - 1.12; T3 -1.68; T4 - 2.24; and T5 - 2.80 g a.i. linear m-1 canopy) and a conventionally applied dose (T0 - 2.80 g a.i. linear m-1 of canopy, manually applied broadcast), with four replicates. The variables analyzed were: CO2 assimilation, stomatal conductance, transpiration, leaf temperature, number and length of panicles, number of fruits per plant, average fruit weight, yield, pulp firmness, titratable acidity and total soluble solids in the fruits. At the conventionally applied dose (2.8 g a.i. linear m-1 of canopy), PBZ application via micro-sprinkler irrigation system proved to be the most efficient way to reduce CO2 assimilation, stomatal conductance and transpiration. PBZ applied via micro-sprinkler irrigation system at a dose of 0.56 g a.i. linear m-1 of canopy promotes greater number of panicles and yield in ?Palmer? mango.  aGrowth regulators  aMangoes  aPaclobutrazol  aPhysiology  aPlant physiology  aFisiologia Vegetal  aManga  aMangifera Indica  aRegulador de Crescimento  aIndução floral  aMicroaspersor  aPBZ  aSemiárido  aVariedade Palmer1 aPEREIRA, K. M.1 aSILVA, J. S. da1 aMESQUITA, A. C.1 aMOUCO, M. A. do C.1 aTORRES JÚNIOR, V. G.1 aBARBOSA, K. V. F.1 aSOBRAL, Y. R. A.  tComunicata Scientiaegv. 14, 2023.