It was studied the response of potato ‘Montserrat’ in an aridosol soil to surface (SF) and sub-surface (FSS) drip fertirrigation in the greenhouse in terms of: yield, dry matter (MS) and its accumulation (TAMS), phosphorous absorption (AP) and phosphorous absorption rate (TAP) in the aerial portion of the plant (leaves and stems), root and tubers. Five plant-destructing samplings were made at 24, 37, 47,59, and 72 days after emergence (DDE). Only the root showed significant differences for FS and FSS regarding MS and AP. Even when the plant of potato kept accumulating MS through time, the highest average TAMS for fertirrigation systems happened at 37 DDE for the aerial part and root with 4.08 and 0.113 g·plant-1·day-1, respectively, the stage at which tuberization started. The highest TAMS for the tuber was at 72 DDE with 7.99 g·plant-1·day-1 and a fresh yield of 897 g·plant-1. AP showed significant differences between fertirrigation systems for the root only. In the aerial part and the root, AP had an increasing tendency that later decreased during the growth cycle, the tuber only showed and increasing tendency. The highest TAP for the aerial part and the root occurred at 37 DDE, in the tuber at 72 DDE with 0.022 g·plant-1·day-1 of phosphorous, the former resulted in the main sink for assimilates and phosphorous; thus, any fertirrigation system may be used to produce potato.

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