Effect of partial root-zone drying and magnetic water on the growth characteristics of tomato (Solanum lycopersicum L) in greenhouse conditions
One of the ways to increase the quality of irrigation water is to magnetize it. Research in the research greenhouse of Ferdowsi University of Mashhad in 2018.The experiment was completely random in the form of a factorial design and three treatments included irrigation method (usual irrigation, fixed partial root-zone drying and alternative partial root-zone drying and three levels of magnetic water). This included: ordinary water, one-time magnetic water with a Tesla intensity of 0.367 and Tesla 0.633). Examination of the experimental results showed that in the usual irrigation method and magnetic water with a Tesla intensity of 0.367, the highest plant height (110 cm) , Dry weight of aerial limbs (41.9 g.plant-1, dry weight of roots (17/1 (g.plant-1 and root volume (137 cm3.plant-1) and in the usual irrigation method and water Tesla's magnitude of 0.633 was the highest leaf area (25.24 cm2), total fruit weight (508.18 g), lycopene (48.6 (mg.gfw-1). fixed partial root-zone drying magnetic water with .0.367 intensity Tesla The highest amount of chlorophyll b (0.489 mg.gfw-1) and single fruit weight (48.03 g) and in the intensity of Tesla 0.633, the highest percentage of dried fruit (%11.1) was observed. The highest water use efficiency Total biomass (36.6 g / liter) was observed in fixed partial root-zone drying and control water. alternative partial root-zone drying and magnetic water with Tesla 0.367 intensity, maximum leaf-stem ratio (1.37 g.plant-1), air-to-underground ratio (3.14 g.plant-1) and root length (53.2 cm) was observed, but the highest content of relative moisture content of leaf water in alternative partial root-zone drying and magnetic water showed Tesla with a intensity of 0.633. Among the irrigation methods, the highest total fruit weight in each pot was observed in usual irrigation, fixed partial root-zone drying and alternative partial root-zone drying was observed as variable and both Tesla 0.367 and 0.633 intensity of magnetic water were able to improve traits. It is recommended to reduce the effects of drought stress, it is recommended to use this method that is safe, easy and safe for the environment.
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