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Optimizing the recommendation for the management of Liming Requirement (LR) is essential for cost reduction and increased yield of mango. Therefore, the objective of this study was to delimit management zones for the limestone recommendation in areas of irrigated mango in the Brazilian semi-arid region using precision agriculture techniques. The experiment was carried out in three commercial mango orchards located in the region of the São Francisco River Valley, Brazil. Soil samples were collected in the 0.0-0.2 m and 0.2-0.4 m layers following regular grids where the number of samples varied from 50 to 56. Soil analyses were performed. The kriging and inverse distance weighting methods were used to interpolate the maps. The LR map was created from the potential cation exchange capacity (T) and base saturation (BS) maps. It was verified that the Mandacaru area obtained 63.42% of the field requiring liming, being subdivided into four management zones. The Sempre Verde area obtained 1.20% of the area requiring liming and the Barreiro de Santa Fé area showed no need for the LR map. The use of precision farming techniques to delineate management zones was adequate to separate the areas into smaller and more homogeneous zones, for a more precise recommendation of liming. [ABSTRACT FROM AUTHOR]