The aim of this study was to investigate the effect of magnetic water on the growth characteristics of basil (Ocimum basilicum L.) under dificit irrigation and partial root-zone drying (PRD) in greenhouse as a factorial experiment in a completely randomized design at Ferdowsi University of Mashhad. The treatments included three levels of magnetic water (normal water as a control treatment, magnetic water with an intensity of 0.3 Tesla, magnetic water with an intensity of 0.6 Tesla) and three levels of dificit irrigation (100% irrigation as a control treatment, dificit irrigation 50 % of water requirement, partial root-zone drying 50% of water requirement). The results show that the use of magnetic water increases the yield of basil, so that the results show a 5% increase in shoot fresh weight, 13% leaf area index, 28% root dry weight and 24% root volume in magnetic water with an intensity of 0.6 Tesla. The results also show that dificit irrigation reduced all the studied traits and the highest yield was observed in full irrigation treatment. The results of water use efficiency also showed the highest rate in 100% irrigation, but despite a 50% reduction in the volume of irrigation water in partial root-zone drying 50% of water requirement , only a 10% decrease in water use efficiency was observed. The results of comparing adjusted irrigation deficiency and partial root-zone drying also did not show a significant difference in the studied traits.
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