Magnetic Water Treatment Research Articles

Effects of magnetic field treated water on some growth parameters of corn (<i>Zea mays</i>) plants

<abstract> The current study presents the investigation of the effects of magnetic water treatment on the growth of corn (<italic>Zea mays</italic>) plants. A total of 120 corn seeds were divided into four groups in a complete randomized design. Normal tap water was taken and divided into four parts. The first group was given non-magnetized water, whereas the remaining three groups were given water magnetized with 3, 6 and 9 permanent magnets respectively. Eighteen permanent magnets (70 mT) and 4 pipes were used for this system. The results showed that the corn plants watered with magnetized water had higher shoot length than those of normal tap water. Magnetized water significantly increased the dry weight of corn plants when compared with the non-magnetized plants. The results revealed that magnetizing water with 6 magnets was the most influential in increasing the length of plants (194.10 ± 66.74 cm) and dry weight (52.22 ± 12.63 g). On the other hand, root length, stem thickness, and fresh weight were not significantly affected by magnetized water. The influence of magnetized water depends on the number of magnets used to magnetizing water. So as a clean and safe method, watering with magnetized water can be used to improve the growth parameters of the exposed plant. </abstract>

Magnetic water treatment in a wastewater treatment plant: Part I - sorption and magnetic particles

The application of magnetic sorption to treat wastewaters is nowadays seen as a potential industrial method. In this work we apply magnetite particles to remediate real wastewater samples, with several contaminants competing for the same active sorption center at the same time. We also apply our studies at three different sampling points of a Wastewater Treatment Plant. In general terms, magnetite particles have shown a very good behaviour concerning the reduction of detergents and COD, while phosphates and total nitrogen, and the majority of heavy metals are high to moderately removed. The influence of the type of wastewater (i.e., sampling point) has also shown to be important especially for high concentration of contaminants.

Impacts of Magnetic Field Treatment on Water Quality for Irrigation, Soil Properties and Maize Yield.

Application of magnetic treatment technology for saline irrigation water in agriculture is very limited. Therefore, field experiment was conducted to investigate the influence of magnetic field treatment on the quality of saline groundwater for irrigation and in turn impacts of irrigation by magnetized water on sandy soil properties and maize production under desert conditions in Sinai, Egypt. Magnetic field treatment of irrigation water caused leaching salts below root zones, reduced sodium and chloride accumulation, decreased Na/Cl ratio from 1.01 to 0.89 which mitigated the negative impacts on maize plants in the root zone. Results showed high significant decreases in soil salinity (EC, and SAR) and levels of soil soluble cations and anions in the root zone of soils irrigated with magnetically treated saline water compared to control. Also, sandy soil irrigated with magnetized water had a higher moisture content, available water and soil field capacity compared to control. Irrigation with unmagnetized water induced wetted soil volume of 2575.68 cm3 reflecting low drip irrigation application efficiency of 64.07 %, while wetted soil volume was 2919.24 cm3 reflecting high water application efficiency of 72.62% for irrigation with magnetized water. Results of this research demonstrated significant beneficial effects of magnetic field treatment on saline water quality, sandy soil properties and maize crop yield confirming the possibility of using low quality water for irrigation under water scarcity and arid conditions.

HYDRAULIC PERFORMANCE ANALYSIS OF EMITTERS UNDER MAGNETIED SALINE WATER CONDITIONS

Laboratory experiments were carried out at the National Irrigation Laboratory of Agricultural Engineering Research Institute (AENRI), Dokki, Giza Governorate. to evaluate the influence of magnetic water treatment (MWT) on the hydraulic performance for emitters , study the characteristics of saline water (chemicals ,physical ) such as (EC, TDS, pH, density ,velocity and viscosity ) after magnetic at a different distance, and calculate the clogging ratio concentration of water salinity (0.343 dSm-1 (S1), 3.125 dSm-1 (S2), 5 dSm -1 (S3) and 6.25 dSm-1 (S4)) with Untreated magnetism and magnetism. Results of this study indicated that the using of MWT caused higher uniformity from (96.11% to 94.88%, 95.50% to 90.83% , 94.51 %to 88.59% . 94.15% to 86.59% ) at the beginning and end of experiment for magnetic treatment and Eu (95.75% to 92.69% ,94.96% to 86.12% , 95.56 %to 80.14% ,95.39% to 75.29% ) at the beginning and end of experiment for magnetic untreated for S1, S2 ,S3 and S4, respectively .Also, using the MWT led to increase in average flow rate compared to non-magnetic water from (4.69l/h to 4.41l/h), (4.64 l/h to 4.18 l/h ),(4.41to 4.33 l/h ) and (4.38 to 4.19l/h) with magnetically treated for different concentrations of saline water. On the other hand chemical properties values like (EC and TDS) were not change after using magnetic therapy, but the pH value increased after treatment from ( 7.30 to 7.64 before and after magnetic treated ,(7.53 to 7.68 ),(8.04 to 8.17) ,(7.59 to7.95 ) under different water treatment . In addition to, the physical analysis (density and viscosity) of salinity water were decreased with magnetic treated and the velocity was no significant effect before and after magnetic which the average value (1.42ms-1to 1.45ms-1) for control and magnetic treatment. Finally, the clogging ratio of emitters (%) with the magnetic treatment was less than untreated magnetic

Characteristic study of some parameters of soil irrigated by magnetized waters

The degradation of water quality in Tunisia is mainly due to overexploitation of groundwater, pollution, and above all to mismanagement. The effect of these waters can influence the physicochemical quality of the soil. For this fact, the method of magnetic treatment can be used in the field of agriculture to alleviate the salinity problems of water. Given the importance of the impact of irrigation water on soil support, the objective of this study is to investigate the impact of magnetic treated water on soil quality. A test companion was conducted for 4 months. During this period, the tests illustrated the effect of different parameters related to 4 magnetic devices, with various intensities from 0.01 to 0.5 T, at different soil depths. It was noticed that the collected soil samples from magnetized lines had a lower salinity than those of non-magnetized sites. The magnetic treatment of the irrigation water reduced the soil conductivity by about 19% for the 0–20-cm depth and about 17% for the 20–40-cm depth under a 0.3-T magnetic strength. On the other hand, the magnetic treatment of irrigation water increased the pH of the soil. Accordingly, the recorded difference between the pH of the treated and untreated soils reached 8% and 5% for 0.5 T and 0.3 T, respectively. The statistical analyses were conducted to exhibit the correlation and the interactions between different variables such as pH, conductivity, depth, length, soil moisture, and intensity. We rely on Bayesian networks to build a graphical model that displays the water treatment impact on soil characteristics. Therefore, we calibrated a discrete Bayesian network, starting from raw measured data, and we discovered the relationships between different variables characterizing the agricultural soil and the experimental conditions based on magnetic water treatment.

Irrigation with Magnetized Water Affects the Soil Microenvironment and Fruit Quality of Eggplants in a Covered Vegetable Production System in Shouguang City, China

The present study aimed to explore the mechanisms and soil properties of eggplant production and quality, as well as the bacterial community structure, soil physico-chemical properties, eggplant growth properties, and nutrient contents. A field experiment was performed in a seasonal crop of eggplants irrigated with magnetized water (MW) and nonmagnetized water (NMW). A magnetic field was used for water treatment in the MW groups. The soil nutrient contents as well as soil enzyme activities were significantly increased in the MW treatment compared with those in the NMW treatment. After irrigation with MW, the abundance of Proteobacteria in the soil significantly increased, while that of Firmicutes decreased in comparison with the NMW treatment. The bacterial diversity indexes operational taxonomic unit (OTU), Chao1 and ACE revealed increases of 3~24%. Additionally, the MW treatment increased the length, width, and fresh weight of the eggplant leaves by 17~29%, while the fruit length and width and the single fruit weight increased by 5~16%. The contents of vitamin C and organic acids in eggplant fruit in the MW treatment markedly increased by 25~34% compared with those in the NMW treatment. Likewise, the contents of mineral elements in the treated eggplants exhibited marked increases compared with the levels in the NMW treatment. Irrigation with MW had the potential to improve soil quality and change the community structure of the bacteria. Moreover, irrigation with MW could improve eggplant growth and output, hence promoting fruit quality. These results could provide a theoretical basis for the application of magnetics for improving crop production.

ALLEVIATION OF SALINITY STRESS THROUGH MAGNETIC WATER AND NANO ZINC AND MAGNESIUM TREATMENT OF LEMONGRASS PLANT (Cymbopogen citratus L.)

The effect of magnetic water compared with saline water , nano-Mg at 100 and 200 ppm and nano-Zn at 50 and 100 ppm treatments and their combinations on lemongrass plants (Cymbopogen citratus L.) was studied during 2018/2019 and 2019/2020.Vegetative growth parameters including plant height, number of tillers/ plant, leaf area, herb fresh and dry weights were greatly affected by both studied factors. Magnetic water treatments recorded the highest values of all vegetative growth parameters compared with saline water. However, all nanoparticles of Mg and Zn treatments were superior than control in promoting vegetative growth parameters and the treatments of 100 ppm nano-Zn and 200 ppm nano-Mg recorded the maximum values of vegetative growth parameters. The combined treatments showed that the highest values of vegetative growth measurements were obtained in plants irrigated with magnetic water and sprayed with 100 ppm nano-Zn, in both cuts In 1st and 2ndseasons.N, P, K and Mg contents were significantly higher in lemongrass plants irrigated with magnetic water than those irrigated with saline water. Moreover, the treatments of 100 ppm nano-Zn exhibited the highest significant values of N, P, K, whereas 100 and 200 ppm of nano-Mg treatments were superior in recording the highest values of Mg content, in the two seasons. The combination treatments of lemongrass plants irrigated with magnetic water and sprayed with 100 ppm nano-Zn or 200 ppm nano-Mg produced the richest values of N, P and K% D.W., whereas, the treatments of magnetic water combined with 100 or 200 ppm of nano-Mg produced the best Mg content.A great effect of magnetic water irrigation on increasing Fe and Zn contents than saline water treatments. The treatments of 50 and 100 ppm of nano-Zn were more effective than control and other treatments in maximizing Fe and Zn levels. The combined treatments of lemongrass plants irrigated with magnetic water and sprayed with 100 ppm of nano-Zn exhibited the highest values of Fe and Zn% D.W. in most cases. Additionally, total chlorophyll greatly increased in lemongrass plants irrigated with magnetic water than those irrigated with saline water, whereas the treatment of 200 ppm nano-Mg increased it than others. Interaction effect showed that, plants irrigated with magnetic water and sprayed with nano-Mg at 200 ppm exhibited the highest values of total chlorophyll.Proline and glycine betaine contents were greatly decreased with magnetic water treatment compared with saline water. Meanwhile, all applied treatments were effective in decreasing the levels of both constituents than control, which considered a good indicator to alleviation of water salinity stress on lemongrass plants through magnetic water and nanoparticles of Mg and Zn applications. Finally, volatile oil %, was greatly increased in lemongrass plants irrigated with magnetic water, especially the treatment of nano-Zn at 100 ppm as compared of others in this respect in both cuts and the two studied seasons. The interaction between the two studied factors was significant which means that both factors act together in improving volatile oil content in lemongrass herb

The Study Effect of field Magnetic on some of average fungi of the soil

In series of experiment to test effect magnetic series of experiment to test effect magnetic water treatment and use it in agriculture and Environment and leaching salts of soil, the objective of the present work was to fungi determine the effect of Rhizopus stolanifer, Fusarium oxysporium, Fusarium solani, Trichoderma harzianum, Aspergillus niger, That cause pant disease indirect form and use magnetic area direct form in habit or kill pathogenic fungi . the use of magnetic mechanism appear positive result in fungi growth habit for fungi uses’ in experiment. the use of that mechanism signification different from measurement diameter colony growth in petri dish when it use magnetic water or use direct magnetic area that incurrence the colony of fungi. As part of a series of experiments to test the effect of magnetic treatment on pathogenic fungi, their effect on water and their uses for agricultural and environmental purposes and soil washing of salts, the current work aims to use magnetic treated water and observe its effect on Fusarium oxysporium, Fusarium solani, Trichoderma harzianum, Aspergillus niger, Rhizopus stolanifer that cause Plant diseases indirectly and the use of the magnetic field and directly to inhibit or kill pathological fungi. The use of magnetic technology showed positive results in stopping the fungal growth of the selected fungi in the experiment as the use of those Cannula for significant differences in terms of measuring the diameters of colonial growth in dishes, whether when using magnetic water or using the direct magnetic field to which the fungi colonies were exposed

GROWTH AND DEVELOPMENT OF BELL PEPPER CROP IRRIGATED WITH MAGNETICALLY-TREATED WATER

This study aimed to evaluate the benefits of irrigation with magnetically-treated water and replacement depths based on ETc, in plant growth and development of bell pepper grown in a protected environment in two cultivation seasons. The experiment was carried out in a protected environment, in the Centro Técnico de Irrigação (CTI), at Universidade Estadual de Maringá (UEM), in Maringá - PR. Two experiments were performed: summer (2017-2018) and winter-spring (2018). The experimental design adopted was randomized blocks in factorial scheme 3 x 2 (six treatments) with four replications in the summer season and 2 x 2 (four treatments) with six replications in the winter-spring season. The first factor consisted of water replacement depths (50, 75 and 100% of the evapotranspiration of culture (ETc) in the summer season, and 75 and 100% ETc in the winter-spring season. The second factor was the application of water with and without magnetic treatment. Characteristics of growth (plant height, stem diameter, leaf area, and dry matter of stem, leaf, total, and root) and development (first flower and first fruit) were evaluated. Results showed that there was no significant interaction between the factors for the summer season. There were only isolated effects of replacement depths, and the 100% ETc had the highest values for the growth variables, independent of water treatment. The application of magnetically-treated water provided higher accumulation of dry matter (stem, total, and root) when irrigated with 75% ETc for the winter-spring season.

Effect of magnetic water treatment for mixing and curing on structural concrete

The magnetic water (MW) has been used in different fields like agriculture, health care, constructions, dairy production, and oil industries. This study involves the investigation of influence of magnetic water on the workability and compressive strength of concrete. The magnetized water was prepared using the magnetic treatment system. MW is also used to investigate the reduction in the amount of cement required to achieve specified compressive strengths. The water is initially magnetized with the help of 0.5hp motor having a PERMAG N406 is 0.8Tesla magnet at its inlet pipe. In this study, the effect of magnetized water on workability, strength and quality of M25 grade concrete was studied.The compressive strength and splitting tensile strength is higher for the mix which used magnetized water for both mixing and curing. Increase the compressive strength and splitting tensile strength of concrete prepared with MW I more significant at the early age.

DEVELOPMENT OF BONDING AGENT USED IN FRP STRENGTHENING SYSTEM

Fiber Reinforced Polymer (FRP) composite is an attractive material for strengthening various civil infrastructures. The strengthening system that based on FRP composites consists of many elements. These are: strengthening material (FRP), strengthened element (concrete, steel, wood, etc) and bonding agent. The latter is the most important elements which affect the performance of the whole strengthening system. Different types of bonding agent are used based on service conditions. Epoxy-based adhesive (EBA) is the most commonly used to strengthen concrete or steel structures. Due to the limitations of the application of EBA, cement-based adhesive (CBA) is utilized as an alternative bonding agent. The CBA have been developed by modifying its properties. The modification was conducted using different powder-state materials or by magnetic water treatment. The development of bonding agent that used in FRP strengthening system is addressed in this paper in order to highlight the most modern bonding agent which consider as a promising material to employ in the actual outdoor structures.

Machine for magnetic treatment of water used in baking

The quality of bakery products depends on properties of flour, water, and yeast. The most important factor in is quantity and quality of gluten, which depends on the gas-holding capacity of dough, and porosity, elasticity, and the volume of baked bread. The search for opportunities to improve quality of bakery products by affecting other components of dough, one of which is water is a relevant issue. Quantity and quality of water depend on the properties of dough and its products. Water is a solvent regulating intensity of enzymatic processes, both in yeast and in dough. Researchers and manufacturers expose water to various influences: degassing, heat treatment, ionization, sound processing and ultrasound. In recent years, the activation of natural water by electromagnetic fields has attracted attention of many researchers. The article presents a machine for electromagnetic treatment (EMF) of food solutions, in particular water used in baking. Due to some technical solutions, it was possible to reduce the heating temperature of water below 320C, which is mandatory for kneading the dough. It can eliminate the ingress of toxic electrolysis products into the water. The machine can be easily assembled, disassembled and washed. It has an active component of power below similar devices used in heat power engineering. The machine can be used both in laboratory conditions and in industrial production.

Study of the Magnetic Water Treatment Mechanism

Study of the Magnetic Water Treatment Mechanism

Dyeing of Wool and Woolen Fabrics in Magnetically Treated Water

ABSTRACT The paper presents the results of the investigation into the process of magnetic treatment of water for application in the dyeing of wool and woolen fabrics. The parameters, such as electrolytic conductivity, surface tension, pH, hardness, and temperature, were measured before and after the magnetic treatment. The optimum conditions of treating water in a magnetic field ensuring the best parameters of the dyed fabric were established. The parameters of the magnetic treatment are optimal if the magnetic field is induced to 0.18 T, water flows through the magnetic field in a rubber tube, and treatment time is from 4 to 5 s. Laboratory tests of the so dyed fabrics showed they had increased absorption of the dye and significantly improved color fastness to washing and wet rubbing. The results of the experiments with the dyeing of wool and woolen fabrics in magnetically treated water suggest that in optimum process conditions the economic effect reduced the dye consumption by about 15% together with improved dyeing quality.

Effect of fertilization and irrigation with magnetic water on the productivity of marjoram plant

This research was conducted at the National Research Center greenhouse ring two consecutive seasons of 2013/2014 and 2014/2015, in order to study the effect of irrigation water types (tap water, magnetized water) and levels of ammonium sulfate (0, 7, and 14 g / pot) and their interaction, on the vegetative growth and oil production of marjoram (Majorana hortensis L.) plant. The results showed that marjoram plants responded significantly to the different types of irrigation, as well as nitrogen fertilization and their interaction. Irrigation by magnetized water showed that a significant increase in vegetative growth; i.e. plant height, number of branches, fresh and dry weights of herb, stem, leaves and roots per plant and root length. Using nitrogen fertilizer rates gave significant increases in vegetative growth parameters, where the best treatment one was 14 g/pot. As for the interaction between types of irrigation water and nitrogen fertilizer rates, data showed that plants irrigated with magnetized water with addition of ammonium sulfate at a rate of 14 g/pot recorded the highest values ​​of the attributes of vegetative growth, production of oil, major compounds of oil and chemical components of marjoram plant. Magnetic water treatment with the addition of 14 g / pot ammonium sulfate recorded 43.38% of the terpineol-4-ol (the main compound of the oil), while irrigation with tap water recorded 26.41%. Also this treatment increased some compounds of marjoram oil percent; such as α-myrcene, α-terpinene, α-phellandrene, C-terpinene, α –terpinolene, L-linalool, α-terpineol and linalyl acetate with mean values of 1.08, 5.91, 1.13, 12.45, 2.40, 3.48, 3.53 and 6.35 compared to tap water treatment, which gave 0.89, 4.31, 1.08, 8.81, 1.91, 2.64, 2.97 and 5.66 for these components; respectively. The obtained results also indicated the possibility of obtaining the highest values ​​of chemical constituents such as total carbohydrates, nitrogen, phosphorus and potassium percentages when plants were irrigated with magnetized water with the addition of ammonium sulfate at a rate of 14 g / plant under the conditions of the experiment.

New nanosized Gd-Ho-Sm doped M-type strontium hexaferrite for water treatment application: experimental and theoretical investigations.

In this paper, rare-earth doped M-type strontium hexaferrite magnetic nanoparticles SrHoxGdySmzFe(12−(x+z+y))O19 (x = y = z = 0.01) have been prepared by the sol–gel combustion method for the first time. The properties of the material were investigated using XRD, FTIR spectroscopy, Raman spectroscopy, SEM, UV-Vis spectroscopy, and VSM. X-ray analysis revealed that a magnetic single-phase was formed with a crystallite average size of 49 nm. FTIR spectra confirmed the formation of the structure of the hexaferrite phase. Raman analysis confirmed the formation of all crystallographic hexaferrite sites. A shift in the octahedral site frequencies and a significant shift were observed at site 12k and 2a, indicating that the doping elements occupied these sites. The SEM analysis showed that the particles were different in shape and slightly agglomerated. The EDS result confirmed the purity of the sample. The calculated band gap from the UV-Vis NIR spectroscopy spectra of the sample was 1.62 eV. The magnetic analysis of the sample material at room temperature revealed a coercivity of 5257.63 Oe, saturation magnetization of 67.72 emu g−1, remanence ratio of 0.52, a maximum magnetic energy product of 1.06 MGOe and Curie temperature of Tc = 765 K. First-principles calculations were conducted on multiple configurations of SrFe12−xXxO19 with x = 0, 0.5 and X = Sm, Gd, Ho. The site preference of each doping element was determined, and the effect of the doping on the structural, electronic, and magnetic properties of the compound was studied. The magnetic properties of this rare earth (Gd, Ho, Sm) doped strontium hexaferrite indicated that this compound could be used in both permanent magnets and water treatment application.

Effects of treated water with neodymium magnets (NdFeB) on growth characteristics of pepper &lt;em&gt;(Capsicum annuum)&lt;/em&gt;

This study was conducted to investigate the effect of magnetic water treatment on growth characteristics of pepper (Capsicum annuum) plants. One week old pepper plants were selected and divided into four groups in a complete randomized design. In our study, we took normal tap water and divided it into four parts. The first group received given non-magnetically treated water (as a control), while the remaining groups received magnetized water at 3, 6, and 9 magnets, respectively. Four pipes and 18 permanent magnets with a flux density of 70 mT were used for this system. The results of the current study showed that magnetized water caused significant increases in all studied parameters, except plant length and dry weight, when compared to non-magnetized water. The results revealed that magnetizing water with 6 magnets was effective than others in increasing the number of fruits and leaves per plant, whereas magnetizing water with 9 magnets was effective than others in increasing the fresh weight of produces fruits. The impact of magnetic water treatment depends on the number of magnets used to magnetizing water. It appears that the utilization of magnetically treated water can lead to improving the quantity and quality of pepper fruits. Therefore, applying magnetized water could be one of the most promising ways to enhance agricultural production in an environmentally friendly way.

Impacts of magnetic water treatment on water quality, feeding efficiency and growth performance of common carp in integrated recirculating aquaculture systems

An integrated recirculating aquaculture system (IRAS) is considered as an alternative solution for efficient utilization of available resources, nutrient recycling and maintaining ecological balance. The effects of using magnetized water on the growth performance of common carp (Cyprinus carpio L.) and water quality parameters were investigated in an IRAS. Six independent IRASs were designed; each system consisted of three tanks: a fish rearing tank, a waste-collection tank and a biological filter tank. An additional crop of macrophyte (Lemna minor) was used as a medium in the biological filter tanks in order to qualify as an IRAS. Two treatments with three replicates were set up in a randomized design. The experimental treatment was supplied with the magnetic field device, while there was no device in the control treatment. The fish growth, feeding efficiency and water quality parameters were measured in all systems. The results revealed that the use of magnetized water in the IRASs increased the specific growth rate of common carp and the growth rate of plants; while, decreased the feed conversion ratio. However, the magnetized water had no effects on the concentrations of ammonium nitrogen, nitrite nitrogen and nitrate nitrogen. The study suggested that the use of magnetized water in the IRASs could be beneficial as a cost-effective technique to increase the profitability of the system.

Enhancing the Growth and Yield of Lettuce (Lactuca sativa L.) in Hydroponic System Using Magnetized Irrigation Water

The application of magnetic technology to agricultural productions is considered new breakthroughs to the enhancement of food production. However, studies about its application on the hydroponic system of production on high valued crops are limited. Hence, the present study assessed the effect of magnetically-treated water on the growth and yield parameters of lettuce in hydroponic system. Magnetic device with different number of permanent magnets was used to magnetize irrigation water in the hydroponic system. Uniform and healthy seedlings are transplanted and arranged completely randomized design. Magnetically treated water enhanced the growth and yield parameters of lettuce such as weekly height, leaf area, fresh weight, and root length. The height, leaf area, fresh weight, and root length increased up to 44.30%, 199.93%, 50.72%, and 37.00%, respectively vs. the control. Results revealed that magnetic treatment for water in hydroponic system has potentials to increase the growth of lettuce and consequently its yield.

English

Application of magnetically treated water to seedlings production has shown beneficial results in several crops. The objective of study was to evaluate the effect of magnetically treated water on germination, growth and development of eggplant seedlings. Three experiments were conducted and the water was treated with 1000 G magnetic field during 24 h. In the first experiment, the treatments tested were applications of magnetically treated water and magnetically untreated water in trays filled with soil and commercial substrate. In the second experiment, the same water treatments were applied, but the trays were filled only with commercial substrate. In the third experiment, two factors were tested, the water treatments (magnetically treated water and untreated water) and two water replacement frequencies (daily and every two days), and the plastic cups were filled with only commercial substrate. In the first experiment, the magnetic treatment of the irrigation water contributed with the growth of the seedlings. However, in the second and third experiments that were conducted on substrate, there was growth reduction of eggplant seedlings with application of magnetically treated water. There were more occurrences decreasing than increasing of substrate water evaporation with the magnetically treated water. There were no significant differences for the seedling growth under different irrigation frequencies. Key words: Germination, magnetism, seeds, Solanum melongena L. &nbsp