EFFECT OF MAGNETIZING WATER AND SEEDS ON THE
Transcription
EFFECT OF MAGNETIZING WATER AND SEEDS ON THE
EFFECT OF MAGNETIZING WATER AND SEEDS ON THE PRODUCTION OF CUCUMBER (Cucumis sativus L.) UNDER COOLED PLASTIC TUNNELS By Shiema Fathi Abdalla Saeed B.Sc. (Hon.) Agriculture University of Khartoum 2003 A Thesis Submitted to the University of Khartoum in Partial Fulfillment of the Requirement for the Degree of M.Sc in Agricultural Engineering. Supervisor: Dr. Amir Bakheit Saeed Dept. of Agricultural Engineering Faculty of Agriculture University of Khartoum DEDICATION This effort is dedicated to my family TABLE OF CONTENTS Page ACKNOWLEDGEMENT i ABSTRACT ii ARABIC ABSTRACT iv CHAPTER ONE: INTRODUCTION 1 CHAPTER TWO: LITERATURE REVIEW 3 2.1 Magnets and magnetism 3 2.2 Claimed benefits and effects 4 2.3 Water hardness 4 2.4 Some results of applying of magnetized water for soil 2.5 desalination 6 Agricultural applications 8 2.5.1 The benefits of the magnetizer use in agriculture 9 2.6 Magnetic water treatment 10 2.7 Magnetized seeds 14 2.8 Cucumbers (Cucumis sativus) 17 CHAPTER THREE: MATERIALS AND METHODS 19 3.1 Experimental site and layout 19 3.2 Seeds treatment 19 3.3 Cooled plastic tunnel 23 3.4 Irrigation system description 23 3.4.1 Pump unit 23 3.4.2 Control unit 23 3.4.3 Main, submain and lateral lines 23 3.4.4 Emitters 26 3.5 26 Data collection 3.5.1 Germination rate 26 Page 3.5.2 Number of leaves per plant 26 3.5.3 Plant height (cm) 26 3.5.4 Days to 50% flowering 28 3.5.5 Fruit length (cm) 28 3.5.6 Fruit diameter (cm) 28 3.5.7 Yield (number of fruits/m2) 28 3.5.8 Yield (kg/m2) 28 3.5.9 Leaves dry meter percentage 28 3.6 28 Physical and chemical analysis CHAPTER FOUR: RESULTS AND DISCUSSION 29 4.1 Number of leaves per plant 29 4.2 Days to 50% flowering 30 4.3 Plant height (cm) 32 4.4 Yield (kg/m2) 32 4.5 Yield (number of fruits/m2) 33 4.6 Fruit length (cm) 35 4.7 Fruit diameter (cm) 37 4.8 The leaves dry matter percentage 37 4.9 Germination rate (%) 39 4.10 Physical and chemical analyses 42 CHAPTER FIVE: CONCLUSIONS AND RECOMMENDATIONS 43 REFERENCES 44 APPENDICES LIST OF TABLES Table Title 2.1 Soil chemical characteristics Page 7 LIST OF FIGURES Fig Title Page 3.1 Plan of split plot design 21 3.2 Drip irrigation system 25 4.1 Number of leaves/plant 31 4.2 Days to 50% flowering 31 4.3 Plant height (cm) 34 4.4 Yield (kg/m2) 34 4.5 Yield (number of fruits/m2) 36 4.6 Average fruit length (cm) 36 4.7 Fruit diameter (cm) 40 4.8 Leaves dry matter (%) 40 4.9 Germination rate 41 LIST OF PLATES Plate Title Page 3.1 Water magnetizing device (Modifier). 20 3.2 Seeds magnetizing device with funnel attachment 22 3.3 Plastic tunnels from inside showing the pads, the fans and the drip irrigation laterals 24 3.4 A pressure compensating Turbo-key type of emitters 27 4.1 Fruit diameter 38 ACKNOLEDGEMENTS First of all, praise to Allah for giving me strength and patience to complete this work successfully. Appreciation and thanks are due to my supervisor Dr. Amir Bakheit Saeed who I would ever recall his helpful guidance, constructive criticism and unlimited advices through the course of the study. My thanks are extended to my family for their diligence and keenness. The co-operation of all members of the Agricultural Engineering Dept. in this work is gratefully acknowledged. The assistance of my colleagues and friends especially Dalal Ezaldeen is also greatly appreciated. Lastly, but by no means the least, thanks are also conveyed to Miss. Bilghies H. for her assistance in making final touches and typing this manuscript. i ABSTRACT Very recently magnetizing technology systems have been used to magnetize irrigation water and seeds. Such magnetized treatments were reported to play a great role in increasing the germination rate, crop stand and reclaiming saline soils, consequently resulting in increasing yield. The experimental work was carried out in one of the cooled plastic tunnels of the Date Palm Technology Co. (DATECHO), Shambat, during the summer season (May-August) of 2005. The study was aimed at improving vegetable crop productivity by using magnetic technologies. A split plot experimental design was used for growing cucumber (Cucumis sativus L.). The treatments were as follows: a) Magnetized water + Magnetized seeds. b) Magnetized water + Non-magnetized seeds. c) Non-magnetized water + Magnetized seeds. d) Non-magnetized water + Non-magnetized seeds. Each treatment was replicated three times. The crop growth and yield attributes were: germination rate (%), number of leaves per plant, days to 50% flowering, plant height (cm), yield (kg/m2) and (number of fruits/m2), fruit length (cm), fruit diameter (cm) and leaves dry matter (%). ii The results of the study showed significant differences (P ≤ 0.05) in the germination rate (87.9%), number of leaves per plant (74.4), days to 50% flowering (33), plant height (380.3 cm), yield (6.1 kg/m2) and average fruit diameter (3.0 cm) when magnetized water was used as compared to non-magnetized water, which gave (77.2%) germination rate, (60.3) leaves per plant, (35.2) days to 50% flowering, (337.9 cm) plant height, (4.0 kg/m2) yield and (2.9 cm) average fruit diameter. On the other hand, there were significant differences (P ≤ 0.05) in days to 50% flowering (33.3 days), yield (5.5 kg/ m2), yield (34.8 number of fruits/m2), average fruit diameter (3.0 cm), average fruit length (15.2 cm) and germination rate (84.5 %) when magnetized seeds were used as compared to non-magnetized seeds, which gave (80.6%) germination rate, (34.8) days to 50% flowering, (4.7 kg /m2 ) and (28.9 number of fruits/m2) yield, (2.8 cm) average fruits diameter and (14.2 cm) average fruit length. There was a significant difference (P ≤ 0.05) in the germination rate (91.5 %) due to the interaction of magnetized water and magnetized seeds as compared to the interaction of non-magnetized water and nonmagnetized seeds, which gave (80.6%) germination rate. Hence, it was concluded that magnetizing irrigation water would increase crop production and productivity, and further improvement could be attained by magnetizing the seeds. iii ! " # . .) '.( -. / - *+, $% &! '( ) .01 . &+. ($.4) & #4 #+ $ ) 5 $532 .2005 :; 9 8, '4 > . 5 < $)= .(Cucumis sativus L.) ( ?,% : $ $+! . + (3 . ; + ( . + ; (0 . ; + ; ( $.4 &,. 0 C?, .$ B+ $# $+! < &. E.=(H %50 G E$ ) F% E(%) $1 &! : () ' J E()' & E(2/ ) (2/5#) 5% E() $ .(%) F% ) )5 ' $.1 &.! M.) (P ≤ 0.05) ! J) K= < /? $L3 &. E(. 33) =(H %50 G E(76.4) $ FG E(% 87.9) ( 3.0) ' J (2/5# 6.1) 51 E( 380.3) $ (60.3) E$. &! (%77.2) $ M ; - iv (. 2.9) .5 (2/5# 4.0) E=(H %50 G (35.2) EF .' J E(% 84.5) $.1 &.! M.) (P ≤ 0.05) ! J) K= N 5 < (2./. . 34.8) (2/5# 5.5) E( 33.3) =(H %50 G . . ( 3.0) ' J ( 15.2) ' & E51 E$. &.! (%80.6) $. M ; . E5 (2/ 28.9) (2/5# 4.7) E=(H %50 G (34.8) .' J ( 2.8) ' & ( 14.2) . &8 $1 &! M) (P ≤ 0.05) ! J) K= < # > ; &8 > (%91.5) 3 O > .(%76.8) $ &! $ M ; O. 51 01 '( OP O < $, . K# < v CHAPTER ONE INTRODUCTION Irrigation is the artificial application of water for the purpose of crop production. In many areas of the world the amount and timing of rainfall are not adequate to meet the moisture requirements of crops and irrigation is essential to raise necessary crops to meet the human needs for food and fiber. The drip system is one of the irrigation methods, which is defined as the frequent, slow application of water either directly onto the land surface or into the root zone of the crop to maintain the water content of the root zone at near optimum levels. Also, irrigation by this method limits evaporation loss of water. The growing scarcity and miss use of the available water resources particularly in arid and semi arid regions constitute challenges to water demands for various utilities. Various means and ways were devised with a view to conserving, developing and properly managing water resources to satisfy essential requirements such as reuse of waste water, rainfall augmentation, berg ice utilization and dew point and fog harvesting. One possible approach to conserve the scarce resources may be through improving performance of the existing irrigation systems using magnetized water. Magnetization causes physical and chemical changes 1 of natural water parameters, resulting in an increase of the dissolving properties of water. These changes result in an increased ability of the soil to get rid of salts and a better assimilation of nutrients and fertilizer in plants during the growing cycle. Watering plants with magnetized water dissolves more nutrients because it lowers the surface tension of water. This lets more minerals be suspended in solution. This improves the pH and causes more minerals and nutrient to pass through the cell walls of roots. Magnetized water penetrates the soil faster and deeper, allowing roots to penetrate and grow larger. Magnetized water dissolves more nutrients into root zone to become available to stimulate plant growth. These may be the reasons why growth rates are increased. Crop yields are big in a shorter period of time, and with much less water and fertilizer and pesticides needs. This is the reason why magnetic water be used for irrigation. This results in an increased crop production and good quality of agricultural products coupled by savings in labour and money. This is also much better for the environment in many ways both for land and water and human health. This study was conducted with a view to evaluating the effect of magnetizing irrigation water and seeds on the production of cucumber (Cucumis sativus L.) under cooled plastic tunnels. 2 CHAPTER TWO LITERATURE REVIEW 2.1 Magnets and magnetism Magnetic fields are produced by the motion of charged particles, for example, electrons flowing in a wire will produce a magnetic field surrounding the wire. The magnetic fields generated by moving electrons are used in many household appliances, automobile, and industrial machines. One basic example is the electromagnet, which is constructed from many coils of wire wrapped around a central iron core. The magnetic field is present only when electric current is passed through the wire coils. Permanent magnets do not use an applied electrical current. Instead, the magnetic field of a permanent magnet results from the mutual alignment of the very small magnetic fields produced by each of the atoms in the magnet. These atomic – level magnetic field result mostly from the spin and orbital movements of electrons. While many substances undergo alignment of the atomic – level fields in response to an applied magnetic field, only ferromagnetic materials retain the atomic – level alignment when the applied field is removed. Thus, all permanent magnets are composed of ferromagnetic materials. The most commonly used ferromagnetic elements are iron, cobalt and nickel. 3 The strength of a magnet is given by its magnetic flux density, which is measured in units of gauss. Typical household refrigerator magnets have field strength of about 1,000 gauss. According to the distribution, the magnets sold for water and fuel treatment have magnetic flux densities in the 2,000 to 4,000 gauss range, which is usually strong. Permanent magnets with flux densities in the 8,000 gauss range are readily available. The magnets sold for magnetic fuel and water treatment are not special; they are just ordinary magnets (Busch et al., 1997). 2.2 Claimed benefits and effects The claimed benefits of magnetic water treatment vary depending on the manufacturer. Some claim only that magnetic treatment will prevent and eliminate lime scale in pipe and heating elements, others make additional, more extravagant claim. Some of the additional claims include water softening, improved plant growth and the prevention of some diseases in people who consume magnetically treated water. Magnetic treatment devices consist of one or more magnets, which are clamped onto or installed inside the incoming residential water supply line. 2.3 Water hardness The phrase hard water originated when it was observed that water from some sources requires more laundry soap to produce suds than 4 water from other sources. Waters that required more soap were considered “harder” to use for laundering. Water “hardness” is a measure of dissolved mineral content. As water seeps through soil and aquifers, it contacts minerals such as limestone and dolomite. Under the right conditions, small amounts of these minerals will dissolve in the ground water and the water will become “hard”. Water hardness is quantified by the concentration of dissolved hardness minerals (Mike, 1998). The most common hardness minerals are carbonates and sulfates of magnesium and calcium. Water with a total hardness mineral concentration of less than about 17 part per million (ppm) is categorized as “soft” by the water Quality Association (Harrison, 1993). “Moderately hard” water has a concentration of 60 to 120 ppm and “very hard” water exceeds 180 ppm. Hard water is often undesirable because the dissolved minerals can form scale. Scale is simply the solid phase of the dissolved minerals, some hardness minerals become soluble in water as temperature is increased. These minerals tend to form deposits on the surfaces of water heating elements, bathtubs and inside hot water pipes. Scale deposits can shorten the useful life of appliances such as dish washers. Hard water also increases soap consumption and the amount of “soap scum” formed on dishes (Busch et al., 1997). Many homeowners and businesses use water softeners to avoid the problems that result from hard water. Most water softeners remove 5 problematic dissolved magnesium and calcium by passing water through abed “ion exchange” beads. The beads are initially contacted with a concentrated salt (sodium chloride) solution to saturate the bead exchange sites with sodium ions. These ion exchange sites have a greater affinity for calcium and magnesium, ions are captured and sodium is released. The end result is sodium ions. Sodium salts do not readily form scale or soap scum, so the problems associated with hard water are avoided (Mike, 1998). A 1960 survey of municipal water supplies in one hundred U.S. cities revealed that water hardness ranged from 0 to 738 ppm with a medium of 90 ppm. Ion – exchange water softeners are capable of reducing the hardness of the incoming water supply to between 0 and 2 ppm, which is well below the levels where scale soap precipitation are significant. One of the principal draw backs of ions, exchange water softeners is the need to periodically recharge the ion exchange beads with sodium ions. Rock salt is added to a reservoir in the softener for this purpose (Liburkin et al., 1986). 2.4 Some results of applying magnetized water for soil desalination It stands to reason that soil desalination is a crucial problem nowadays. It is note worthy that the possibility of using magnetized 6 water to desalinate the soil accounts for its enhanced dissolving capacity, which has been registered repeatedly. Soviet scientists staged myriad trials on the soil of experimental drainages grounds. They came to establish that the density of magnetize water which had penetrated the soil layer was 0.19 g/cm more than of non magnetized water. It was noted that filtration rate had been doubled, in the case with magnetized water every 100 g of soil had salts removed by 10 g more. Once 95% water solution of technical green vitriol was exposed to magnetic treatment it yielded ameliorants, which brought out of the soil by 20 g of salts more per every 100 g opposed to regular water. Thereafter, these findings were incorporated repeatedly both on testing grounds and industrial premises in the world (Tkatchenko, 1997). The tests were implemented on a soil that contained the chemical characteristics shown in the Table 2.1. Table 2.1 Soil chemical characteristics Element Content Element Content CO3 0.019 Ca 0.082 CHO3 0.066 Mg 0.006 Cl 0.572 Na+K 1.072 SO4 1.663 7 It was found that with optimized mode of magnetic treatment the magnetized water would wash salts out as much as 5 times more efficiently than the usual water (Tkatchenko, 1997). 2.5 Agricultural applications Numerous sites promote magnet – based technologies for improving crop production, many based on the easily – disproved fiction that magnets can reduce tension of water and that creating greater solubility and penetration, which stimulates root systems. Overtime, soil compacts, which restricts the root growth. Crop Booster – treated water de-clods and breaks up the compressed soil, giving the roots freedom to grow and absorb nutrients more quickly. Davies (1950) received a patent for magnetically treating seeds to stimulate plant growth. Use of magnets in agriculture is not new and the leading role in this respect goes to the country of Israel. The magnetizer monopole agricultural systems have had explosive result (e.g. cucumbers growth by 20%) in the Israel greenhouses, currently shipping magnets to Israel, where their acceptance is growing by the month and due to water being ascarce resource and the magnetizer serving well the kibbutz’s and other agricultural establishments in the Holy land we expect this country to become shortly one of the most “magnetized” regions of the world. The tests done in Colombia on yield of cauliflowers irrigated with magnetized water showed over 20% increase in weight (important 8 growth of the green parts to better protect white meat against the sun). Past tests on irrigated installation on alfalfa fields in Oregon have resulted in 42% reduction of water needs and electric costs to the pump. Studied on magnetic treatment of squash, tomatoes and cucumber seeds produce a 96% germination rate in only 3 days, whereas the untreated seeds had the normal germination rate of 73% in 14 days (Davies, 1950). The use of the magnetized water in farms in Europe results in better hen laying, better metabolism of animals, descaling of milk stone in dairies, …etc. The lowered surface tension creates greater water solubility and penetration. This effect in breaking-up clods of soil surrounding and restricting the root cilia. The declodding frees the cilia for greater surface area to absorb more water and minerals, hence an increase in root and plant growth. Also, minerals now pass easier through the water into roots. Third and equally important are the electromotive forces that are transferred from the water to the plant. These forces, as shown in thousands of experiments and life applications, specially stimulate growth activity. 2.5.1 The benefits of the magnetizer use in agriculture 1. Increased root growth, due to increased absorption of the dissolved minerals and nutrients means high yields and higher profits. 2. Soil holds moisture longer, encouraging overall growth and saving water costs. 9 3. Water conservation equals less man hours, maintenance and less energy required to pump and irrigate. 4. Increased fertilizer efficiency, cuts fertilizer costs, also the fertilizer is more readily absorbed by the plant and is not wasted in runoff water. 5. The descaling of piping and clogged water jets improves efficiency, saves maintenance time, extends the life of the irrigation system and saves money. 6. Ease of installation and life time warranty – saving money and bringing better yields (McBBr 8’97). 2.6 Magnetic water treatment A wide variety of magnetic water treatment devices are available, and most consist of one or more permanent magnets affixed either inside or to the exterior surface of the incoming water. The water is exposed to the magnetic field as it flows through the pipe between the magnets. An alternative approach is to use electrical current flowing through coils of wire wrapped around the water pipe to generate the magnetic field (Mike, 1998). Purveyors of magnetic water treatment devices claim that passing water to a magnetic field will decrease the water (effective) hardness. According to some vendors, magnetically softened water is healthier than water softened by exchange. Ion – exchange softener 10 increases the water sodium concentration, and claimed unhealthy for people with high blood pressure. There is apparently no consensus among magnet vendors regarding the mechanisms by which magnetic water treatment occurs. Lburkin et al. (1986) found that magnetic treatment affected the structure of gypsum (calcium sulfate). Gypsum particles formed in magnetically treated water were found to be larger regularly oriented than those formed in ordinary water. Similarly, Kronenberg (1985) reported that magnetic treatment changed the mode of calcium carbonate precipitation such that circular disc-shaped particles are formed rather than the dendretic (branching or tree – like) particles observed in non treated water. Others (e.g. Chechel and Annekova, 1972; Martynova et al., 1967) also have found that magnetic treatment affects the structure of subsequently precipitated solids. Because scale formation involves precipitation and crystallization, these studies imply that magnetic water treatments is likely to have an effect on the formation of scale. Some researchers hypothesize that magnetic treatment affects the nature of hydrogen bonds between water molecules. They report changes in water properties such as light absorbance, surface tension, and pH (e.g. Joshi and Kamat 1966; Bruns et al., 1966; Klassen, 1981). However, these effects have not always been found by later investigators (Mirumyants et al., 1972). Duffy (1977) provides experimental evidence 11 that scale that scale suppression in magnetic water treatment devices is due to not to magnetic effects on the fluid, but to the dissolution amount of iron. Iron ions can suppress the rate of scale formation and encourage the growth of a softer scale deposit. Busch et al. (1986) measured the voltages produced by fluids flowing through a commercial magnetic treatment device. Their data support the hypothesis that a chemical reaction driven by the induced electrical current may be responsible for generating the ions shown by Duffy (1977) to affect scale formation. Among those who report some type of direct magnetic water treatment effect, a consensus seems to be emerging that the effect results from the interaction of the applied magnetic field with surface charges of suspended particles. Whether or not some magnetic water treatment effect actually exists, the further question, and the most important for consumers, is whether the magnetic water treatment devices perform as advertised numerous accounts of the successes and failures of magnetic water treatment devices can be found in the literature (Lin and Yotvat, 1989; Raisen, 1984; Wilkes and Baum, 1979; Welder and Partridge, 1954). However, because of the varied conditions under which these field trials are conducted it is unclear whether the positive reports are due to magnetic treatment or to other conditions that were not controlled during the trial. Some commercial devi as have been subjected to test under controlled conditions. Unfortunately, the results are mixed. Duffy (1977) tested a commercial device with an internal magnet and found that it had 12 no significant effect on the precipitation of calcium carbonate scale in a heat exchanger. According to Lipus et al. (1994), however, the scale prevention capability to their ELMAG device is proven, although they do not supply much supporting data. Busch et al. (1997) measured the scale formed by the distillation of hard water with and without magnetic treatment; using laboratory – prepared hard water a 22 percent reduction in scale formation was observed when the magnetic treatment device was used instead of a straight pipe section. However, a 17 percent reduction in scaling was found when non-magnetized otherwise, identical, device was installed, Busch et al. (1997) speculated that fluid turbulence inside the device may be the cause of the 17 percent reduction, with the magnetic effect responsible for the additional 5 percent. River water was subjected to similar tests, but no difference in scale formation was found with and without the magnetic treatment with a commercial magnetic water treatment device was conducted by Hasson and Baramson (1985). Under the technical supervision of the device supplier, they tested the device to determine its ability to prevent the accumulation of calcium carbonate scale in a pipe. Very hard water (300 to 340 ppm) was pumped through a cast – iron pipe, and the rate of scale accumulation inside the pipe was determined by periodically inspecting the pipe interior. Magnetic exposure was found to have no effect on either the rate of scale accumulation or the adhesive nature of the scale deposits. The general principle operation for magnetic field technology is a result of the physics of interaction between a magnetic field and associated with each of poles varies, depending on the fluid flow gap. 13 Because there are no moving parts, the magnetic unit is low maintenance and does not use energy to produce the treatment. The manufactured units have a capacity ranges from 19 pH up to 50,000 g pH of water conditioning. The natural gas application ranges from 0.25 inch up to 20 inch diameter pipe. Proper installation of the unit is critical. Parameters of interest to the manufacturer include fluid flow rate, proximity to electromagnetic fields, and in the case of water applications, water quality parameters such as hardness, iron, silica, and alkalinity. 2.7 Magnetized seeds The potential energy of self – preservation in seeds differs at different stages of development. During the harvest collection, seeds also contain different energy levels and not all planted seeds will grow. That is the reason for an increase of the sowing normal, which is taken to the maximum amount of grown seeds for a hectare. Therefore, it results in the excess of costly seed material being used. Magnetic treatment of seeds before sowing not only allows spending 30-50% less on the sowing material but also provides earlier ripening of the harvest. Seeds, which were treated using magnetic field, grow faster (Kronenberg, 1985). Also, the property of magnetic field to activate the process of seeds protein formation to be provided for the growth of roots and activate processes in weak seeds. As the experiments have shown, it is important to note that the vital element while magnetizing seeds is to choose the 14 right lunar phase, and to magnetize seeds affected by fungal diseases during the first half of the day. For example it is better to magnetize wheat seeds during the new moon, cucumber – during the last quarter of the lunar phase, tomato in full moon; carrot – in the first quarter of the lunar phase, in addition magnetization of seeds can be done 5 months before sowing as on the same day. Application of the above mentioned technology in Russia, Ukraine, Byelorussia, Uzbekistan, UAE, Malaysia, Indonesia and Egypt, with considerable decrease in the ripening time and an increase in the quality of vegetable, fruits and cereals, allowed for an increase of harvest by 12-36% and in some cases up to 100% and more (Tktchenko, 1997). Seeds prepared for the treatment before sowing must be from one group with controlled seeds. Identical by lineage, reproduction conditions of sorting. Seeds from different layers should be thoroughly mixed and humidity should not be more than 14%, multiplicity of the treatment is not important. The physiological method of definition of magnetized seed, productivity is in measuring the length of the embryonic root. It was experimentally proved that plants with good rate of growth of the embryonic root during transition from heterotrophic to autotrophic type of nourishment are more productive and create more developed root system. 15 Magnetic treatment of seeds can be applied at both methods of sowing: 1. Sowing with soaked seeds. 2. Sowing with un-soaked seeds. 1- The seeds were magnetized by pouring water on them through a magnetic funnel. They were left for about 3 minutes. Then they were poured again through the magnetic funnel where they become ready for immediate or late sowing as recommended by Mike (1998). 2- This method of magnetic treatment of seeds is used for sowing on large industrial areas (grain, wheat, maize, barely, millet, buck wheat, etc…). When seeds soaking is difficult due to large quantities, it is enough to pass seeds through magnetic funnel. The result of both methods will be much better if after magnetic treatment of seeds; magnetic water is used for irrigation (Mike, 1998). In 1980-1984, collective farms of Leningrad region saw experiment on pre-sowing magnetization of potato tubers on a total area of more than 3000 hectares. An average increase of the yield made up 4.18 tons per hectare or 23.8% and in some cases, 35%. Agro-industrial tests on pre – sowing seed magnetization of carrots, radish, cabbage, Swede, cotton, sugar beets and other crops were carried out in 1980-1984. The relevant analysis showed a 30% harvest growth with significant reduction of vegetative period and quality improvement (Tkatchenke, 1997). 16 Experts from Azerbaijani Scientific Research Institute of water machinery and land improvement irrigated plots of land by magnetized sea water (salt content 15mg/1). The level of tomato productivity and sorghum increased by 44.6% and 19.45%, respectively. Fresh magnetized water applied for irrigation did not produce impressive effects although they were quite visible. Yield supplement of tomatoes and sorghum constituted 11.4% and 10.4%, respectively. Experimental station of oil crops at Soviet Union held tests on presowing treatment of sunflower seeds in a magnetic system in 1985. The additional harvest ran up to 430 kg hectare. Field research on irrigation of tomatoes by magnetized water was run at Novocherkask mechanical engineering institute in 1984. Magnetic systems were mounted on sprinklers. The tomato yield swelled by 570 kg per hectare. Likewise, the number of green and ripe fruits per one bush built up by 2 and 31 pieces, respectively (Tkatchenko, 1997). 2.8 Cucumbers (Cucumis sativus) Cucumber the English name, under Cucurbitaceae family commonly the centre of origin and distribution probably northern India, introduced to the Mediterranean at an early date and known in China by the second century. Now wide spread throughout the world. Cucumbers are well adapted to warm climates but will grow well at lower temperatures than melons. The optimum range of day – night temperatures is 21-28°C. Water requirement is high but a very high humidity encourages the development of leaf diseases and may affect 17 flower production. Soils should be well drained, with a high level of organic content. A high light intensity tends to increase the number of staminate flowers produced; lower light levels result in the production of more pistilate flowers, seeds germinate well at 27°C. This required at frequent intervals and a high level of soil moisture should be maintained throughout the growing period. NPK should be applied before sowing or planting, followed by applications of liquid manure every 14-21 days until fruits form. Potassium should be available throughout the growth period; the developing fruits and seeds particular have a high nitrogen requirement. Fruits may be harvested 40-80 days from sowing or planting, when 15-20 cm in length. The yield is approximately 5-7 t/ha. Mature fruits should be firm, green and of the size typical of the cultivar. For storage, temperatures should be above 10°C, otherwise chilling injury may occur; at temperatures in excess of 16°C however, fruits rapidly become yellow. The maximum storage period is approximately 14 days (Tindall, 1983). 18 CHAPTER THREE MATERIALS AND METHODS 3.1 Experimental site and layout The experiment was conducted in the cooled plastic tunnels of the Date Palm Technology Co. (DATECHO) at Shambat. The study was carried out during 2005 summer reason. The experimental period extended over June-August. A cooled plastic tunnel with 223 m2 was planted with cucumber divided into six drip irrigation lines, three lines were irrigated with magnetized water and the rest of the lines were irrigated with non-magnetized water. The magnetic device depicted in Plate 3.1 was attached at the beginning of the line to magnetize the water that passes through it to the plants. Each line was divided into two equal parts, one part planted with magnetized seeds and the other with non-magnetized seeds. Four treatments were arranged in a split plot design Fig 3.1, and replicated three times. The treatments were as follows: 1- Magnetized water and magnetized seeds (MWMS). 2- Magnetized water and non-magnetized seeds (MWNMS). 3- Non-magnetized water and magnetized seeds (NMWMS). 4- Non-magnetized water and non-magnetized seeds (NMWNMS). 3.2 Seeds treatment The seeds were magnetized by passing them through a magnetic funnel, which consisted of magnetic plates fixed inside it (Plate 3.2). 19 Plate 3.1 Water magnetizing device (Modifier) 20 N ↑ MWMS NMWMS MWMS NMWMS MWMS NMWMS MWNMS NMWNMS MWNMS NMWNMS MWNMS NMWNMS Fig 3.1 Plan of split plot design Where: MW = magnetized water, NMW = non-magnetized water MS = magnetized seeds, NMS = non-magnetized seeds 21 Magnetizing device Funnel Plate 3.2 Seeds magnetizing device with funnel attachment 22 3.3 Cooled plastic tunnel Made of reinforced plastic sheets, installed over a frame of galvanized steel pipes. One door was attached on the front side and a cooling system containing two exhaust fans and cooling pads (Plate 3.3). 3.4 Irrigation system description Fig 3.2 shows the drip irrigation system which consists of the following components: Pump unit, control unit, main line, sub-main lines, lateral line and the emitters or drippers. 3.4.1 Pump unit The pressure to force water through the different components of the system. An electric motor was used to draw irrigation water by centrifugal pump from the main domestic supply system. 3.4.2 Control unit Two valves were fixed, one directly after the pump unit and the other after it to control discharge and pressure in the entire system. Water flow to the individual laterals is controlled by valves. 3.4.3 Main, submain and lateral lines These supply water from the control head into the field. These are made of polyethylene (PE) . 23 Plate 3.3 Plastic tunnels from inside showing the pads, the fans and the drip irrigation laterals 24 Fig 3.2 Drip irrigation system 25 3.4.4 Emitters These devices are used to control water flow from the lateral lines into the soil. They are pressure compensating (Turbo-key) type (Plate 3.4). These emitters have high resistance to clogging they give different amounts of flow at different levels of pressure. 3.5 Data collection The plant growth parameters measured are as follows: 3.5.1 Germination rate Calculated by dividing the number of germinated seeds over the total number of seeds as a percentage. Germination rate (%) = number of germinating seeds × 100 number of seeds 3.5.2 Number of leaves per plant Three plants were taken at random from each treatment so as to count the number of leaves per plant, and the mean number of leaves of the three plants was recorded. 3.5.3 Plant height (cm) Plant height was measured by a meter from the base of the stem to the youngest leaf, three plants were taken at random from each treatment, and the mean height of the three plants was recorded. 26 Plate 3.4 A pressure compensating Turbo-key type of emitters 27 3.5.4 Days to 50% flowering The number of days when 50% of plants in each treatment reached flowering was recorded. 3.5.5 Fruit length (cm) Fruits length for each treatment was measured by a ruler and then the mean fruit length was recorded. 3.5.6 Fruit diameter (cm) Fruits diameter for each treatment was measured by a vernire caliber and then the mean fruits diameter was recorded. 3.5.7 Yield (number of fruits/m2) An area of one meter square was randomly taken form each treatment, and the number of fruits were recorded. 3.5.8 Yield (kg/m2) A sensitive balance was used to record the total weight of the fruits in randomly selected square meter. 3.5.9 Leaves dry matter percentage A sample of leaves was taken from each treatment and the fresh weight was determined. The leaves were then placed in the oven at 70°C to dry and the dry weight was then determined. The dry matter percentage was calculated using the following formula: Dry matter % = dry weight ×100 fresh weight 3.6 Physical and chemical analyses Physical and chemical analyses were carried out for the water before and after magnetization. 28 CHAPTER FOUR RESULTS AND DISCUSSION The experimental results are presented in Figures 4.1 to 4.8 and Appendices A and B and are briefed in the following: 4.1 Number of leaves per plant An average value of the number of leaves per plant was recorded for magnetized water 76.4 leaves/plant, while for non-magnetized water it was 60.3 leaves/plant (Appendix A). Appendix (A) also shows that, the average value of number of leaves per plant for magnetized seeds was 70.4 leaves/plant, while for a non-magnetized seeds it was 66.3 leaves/plant. From the statistical analysis, there was a significant difference in the number of leaves per plant when magnetized water was used and this agrees with Elhassan (2004). The value of magnetized seeds irrigated by magnetized water gave a higher value of 77.2 leaves/plant, compared to non-magnetized seeds irrigated by magnetized water 75.7 leaves/plant (Fig 4.1 and Appendix B). From Fig 4.1 and Appendix B it can also be observed that, magnetized seeds irrigated by non-magnetized water gave 63.7 29 leaves/plant. The non-magnetized seeds irrigated by non-magnetized water gave a lower value of 57.0 leaves/plant (Fig 4.1 and Appendix B). 4.2 Days to 50% flowering The data given in Appendix A show an average value of 33 days for magnetized water, while for non-magnetized water it was 35.2 days. The data of Appendix A also show an average value of 33.3 days for magnetized seeds, while for non-magnetized seeds it was 34.3 days. Statistical analysis shows that, there was a significant difference for magnetized water and seeds. With reference to Appendix A and Fig 4.2, it was found that, the interaction of magnetized water and magnetized seeds gave a lower value of 32.3 days, while for interaction of magnetized water and a nonmagnetized seeds it was 33.7 days. Also, it was found that, the interaction of non-magnetized water and magnetized seeds gave 34.3 days, while the interaction of a nonmagnetized water and non-magnetized seeds gave a higher value of 36 days (Fig 4.2 and Appendix B). 30 Number of leaves/plant 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 M.W. NMW Treatments M.S. NMS Fig. 4.1. Number of leaves/plant 36.00 35.00 Days 34.00 33.00 32.00 31.00 30.00 M.W. NMW Treatments M.S. NMS Fig. 4.2. Days to 50% flowering 31 4.3 Plant height (cm) The data given in Appendix A reflect that, the average value of 380.3 cm for plant height was given by magnetized water, while for nonmagnetized water it was 337.9 cm. Also, the results showed that, the average value of plant height for magnetized seeds was 367.4 cm, while for non-magnetized seeds it was 350.8 cm (Appendix A). From the statistical analysis, it was found that, there was a significant difference in plant height for magnetized water. The results showed that, the magnetized seeds irrigated by magnetized water gave a higher value of plant height of 384.3 cm, whereas the non-magnetized water gave plant height of 376.2 cm. Also, the non-magnetized seeds irrigated by magnetized water gave plant height of 350.4 cm, when irrigated by non-magnetized water gave a lower value of plant height of 325.3 cm (Fig 4.3 and Appendix B). 4.4 Yield (kg/m2) The results showed that, the average yield for plants irrigated by magnetized water was 6.1 kg/m2, while the average yield for plants irrigated by non-magnetized water it was 4.0 kg/m2 (Appendix A). The results illustrated that, the average yield for magnetized seeds was 5.5 kg/m2, while the average yield for non-magnetized seeds it was 4.7 kg/m2. 32 From the statistical analysis, there was a significant difference in yield (kg/m2) when magnetized water was used. This result agrees with results obtained by Elhassan (2004). Also, the statistical analysis showed that, there was a significant difference in yield (kg/m2) when magnetized seeds were used. The magnetized seeds when irrigated by magnetized water gave a higher yield of 6.7 kg/m2, while the non-magnetized seeds irrigated by magnetized water gave 5.6 kg/m2. Also, the magnetized seeds irrigated by non-magnetized water gave 4.3 kg/m2, while the non-magnetized seeds irrigated by non-magnetized water gave a lower yield of 3.7 kg/m2 (Fig 4.4 and Appendix B). 4.5 Yield (number of fruits/m2) From Appendix A it can be observed that, the average yield when magnetized water was used was 37.4 number of fruits/m2, while the average yield for non-magnetized water it was 31.3 number of fruits /m2. Referring to Appendix A, it was found that, the average yield when magnetized seeds were used was 39.8 number of fruits/m2, while the average yields when non-magnetized seeds were used it was 28.9 number of fruits/m2. The statistical analysis reflects a significant difference in yield (number of fruits/m2) for magnetized seeds. The interaction of magnetized water and magnetized seeds gave a higher yield of 42.7 number of fruits/m2. The interaction of magnetized water and non-magnetized seeds gave 32.2 number of fruits/m2 (Fig 4.5 and Appendix B). 33 Plant height (cm) 390.00 380.00 370.00 360.00 350.00 340.00 330.00 320.00 310.00 300.00 290.00 M.W. NMW Treatments M.S. NMS Fig. 4.3. Plant height (cm) 7.00 Yield (kg/m2) 6.00 5.00 4.00 3.00 2.00 1.00 0.00 M.W. NMW Treatments M.S. NMS Fig. 4.4. Yield (kg/m2) 34 Also, Fig 4.5 and Appendix (B) show that, the interaction of nonmagnetized water and magnetized seeds gave 36.8 number of fruits/m2, and the interaction of non-magnetized water and non-magnetized seeds gave a lower yield of 25.7 number of fruits/m2. 4.6 Fruit length (cm) The results showed that, the average fruit length for magnetized water was 14.9 cm, while for non-magnetized water it was 14.5 cm (Appendix A). The results also show that, the average fruit length for magnetized seeds was 15.2 cm, while for non-magnetized seeds it was 14.2 cm (Appendix A). There was a significant difference in fruit length (cm) when magnetized seeds were used. The magnetized seeds irrigated by magnetized water gave a higher value of 15.3 cm, while for the non-magnetized seeds when irrigated by magnetized water it was 14.5 cm. Also, magnetized seeds when irrigated by non-magnetized water gave 15.1 cm, while the non-magnetized seeds irrigated by non-magnetized water gave a lower value of 13.9 cm (Fig 4.6 and Appendix B). 35 Yield (No. of fruits/m 2) 50.00 40.00 30.00 20.00 10.00 0.00 M.W. NMW Treatments M.S. NMS 2 Fig. 4.5. Yield (No. of fruits/m ) 15.50 15.00 cm 14.50 14.00 13.50 13.00 M.W. NMW Treatments M.S. NMS Fig. 4.6. Average fruit length (cm) 36 4.7 Fruit diameter (cm) The data given in Appendix A reflect that, the average value of fruit diameter for magnetized water was 3.0 cm, while for nonmagnetized water it was 2.9 cm. The results show that, the average value of fruit diameter for magnetized seeds was 3.0 cm, while for non-magnetized seeds it was 2.8 cm. The results of statistical analysis show that, there was a significant difference in fruit diameter for magnetized water and seeds. The interaction of magnetized water and magnetized seeds gave a higher value of 3.1 cm (Plate 4.1), while the interaction of magnetized water and non-magnetized seeds gave 2.9 cm. Also, the interaction of non-magnetized water and magnetized seeds gave 2.9 cm, while the interaction of non-magnetized water and non-magnetized seeds gave a lower value of 2.8 cm (Fig 4.7 and Appendix B). 4.8 The leaves dry matter percentage The results illustrate that, the average value of leaves dry matter ratio for magnetized water was 14.7%, while for non-magnetized water it was 12.2% (Appendix A). Also, the results show that, the average value of leaves dry matter percentage for magnetized seeds was 15.4%, while for non-magnetized seeds it was 11.5% (Appendix A). 37 Magnetized water & seeds Non-Magnetized Plate 4.1 Fruit diameter 38 Fig 4.8 and Appendix B show that, the interaction of magnetized water and magnetized seeds gave a higher value of 16.0%, while the interaction of magnetized water and non-magnetized seeds gave 13.4%. Also, the results show that, the interaction of non-magnetized water and magnetized seeds gave 14.9%, while the interaction of nonmagnetized water and non-magnetized seeds gave a lower value of 9.6% (Fig 4.8 and Appendix B). 4.9 Germination rate (%) As shown in Appendix A the average value of 87.9% germination rate for magnetized water, while for non-magnetized water it was 77.2%. The results show that, the average value for magnetized seeds was 84.5% germination rate, while for non-magnetized seeds it was 80.6% (Appendix A). There was a significant difference in the germination rate for magnetized water and seeds. The interaction gave a significant difference, when magnetized seeds were irrigated with magnetized water gave 91.5% germination rate, while non-magnetized seeds irrigated with magnetized water gave 84.3% (Fig 4.9 and Appendix B) Also, from Fig 4.9 and Appendix B, it was found that, magnetized seeds irrigated with magnetized water gave 77.5% germination rate, while non-magnetized seeds irrigated with non-magnetized water gave 76.8%. 39 Fruit diameter (cm) 3.10 3.05 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.65 2.60 M.W. NMW Treatments M.S. NMS Fig. 4.7. Fruit diameter (cm) Leaves dry matter % 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 M.W. NMW Treatments M.S. NMS Fig. 4.8. Leaves dry matter (% ) 40 Germination rate (%) 95.00 90.00 85.00 80.00 75.00 70.00 65.00 M.W. Treatments M.S. NMW NMS Fig. 4.9. Germination rate (% ) 41 4.10 Physical and chemical analyses The results of the physical analyses showed that, there were differences in water physical properties capillarity (cm), dynamic viscosity (kgm-1S-×10-4), electric susceptibility, specific heat (Jkg-1k1 ×103), which were higher after magnetizing water (Table 1 Appendix C). Also, the chemical analysis show that, there were differences in the (pH and ammonia NH3), which were raised after magnetizing the water (Table 2 Appendix C). 42 HAPTER FIVE CONCLUSIONS AND RECOMMENDATIONS From the results of this study the following conclusions and recommendations can be made: - Magnetizing irrigation water can lead to an increase in the number of leaves/plant, plant height, fruit diameter and encourage seed germination. - Magnetizing seeds can increase fruit length, encourage seed germination and eventually lead to better crop productivity (number of fruits/m2). - Hence, it can be concluded that, generally magnetizing irrigation water lead to an improvement in crop production (kg/m2), and further improvement can be attained by magnetizing the seeds. - Since the technology of magnetization has been newly introduced and it proves to have good potentialities in agricultural production further research studies are highly recommended in this area. 43 REFERENCES Bruns, S.A.; V.I. 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Effect of magnetizing irrigation water and seeds on the cucumber growth parameters Parameters MW NMW MS NMS Number of leaves 76.4 60.3 70.4 66.3 Days to 50% flowering 33.0 35.2 33.3 34.8 Plant height (cm) 380.3 337.9 367.4 350.8 Yield (kg/m2) 6.1 4.0 5.5 4.7 Yield (number of fruits/m2) 37.4 31.3 34.8 28.9 Fruit length (cm) 14.9 14.5 15.2 14.2 Fruit diameter (cm) 3.0 2.9 3.0 2.8 Leaves dry matter percentage 14.7 12.2 15.4 11.5 Germination rate (%) 87.9 77.2 84.5 80.6 Where: MW = magnetized water, NMW = non-magnetized water MS = magnetized seeds, NMS = non-magnetized seeds 48 Appendix B. The interaction of water and seeds Number of leaves MS 77.2 NMS 75.7 NMW MS NMS 63.7 57.0 Days to 50% flowering 32.3 33.7 34.3 36.0 Plant height (cm) 384.3 376.2 350.4 325.3 Yield (kg/m2) 6.7 5.6 4.3 3.7 Yield (number of fruits/m2) 42.7 32.2 36.8 25.7 Fruit length (cm) 15.3 14.5 15.1 13.9 Fruit diameter (cm) 3.1 2.9 2.9 2.8 Leaves dry matter percentage 16.0 13.4 14.9 9.6 Germination rate (%) 91.5 84.3 77.5 76.8 Parameters MW Where: MW = magnetized water, NMW = non-magnetized water MS = magnetized seeds, NMS = non-magnetized seeds 49 Appendix C. Table 1. Physical properties Properties Capillarity (cm) Viscosity dynamic (kgm S ×10 ) Susceptibility Specific heat -1 -1 3 (Jkg k ×10 ) -1 - Electric -4 Normal water 2.54 7.322 80.90 4.132 Magnetized water 2.70 7.283 82.40 4.120 Table 2. Chemical properties Properties pH Ammonia (NH3 mg/l) Normal water 8.0 4.0 Magnetic water 8.1 10.8 50 Appendix D. Table 1. Number of leaves/plant S.F df SS MS f-cal t-tab.(.05) t-tab.(.01) Blocks 2 9.88 4.94 0.31ns 19.00 99.00 Factor A 1 776.02 776.02 49.21* 18.51 98.50 Error (a) 2 31.54 15.77 Factor B 1 50.02 50.02 4.75 ns 7.71 21.20 AB 1 20.02 20.02 1.90 ns 7.71 21.20 Error (b) 4 42.08 10.52 Total 11 Where: df = degree of freedom SS = sum of square MS = mean sum of square f-cal = f calculated f-tab = f tabulated Factor A = water Factor B = seeds AB = interaction (water x seeds) ns = non significant * = significant 51 Table 2. Days to 50% flowering S.F df SS MS f-cal t-tab.(.05) t-tab.(.01) Blocks 2 1.17 0.58 1.00ns 19.00 99.00 Factor A 1 14.08 14.08 24.14* 18.51 98.50 Error (a) 2 1.17 0.58 Factor B 1 6.75 6.75 16.20* 7.71 21.20 AB 1 0.08 0.08 0.20ns 7.71 21.20 Error (b) 4 1.67 0.42 Total 11 52 Table 3. Plant height (cm) S.F df SS MS f-cal Blocks 2 527.66 263.83 1.69ns 19.00 99.00 Factor A 1 5389.04 5389.04 34.51* 18.51 98.50 Error (a) 2 312.33 156.17 Factor B 1 821.71 821.71 6.53ns 7.71 21.20 AB 1 214.21 214.21 1.70ns 7.71 21.20 Error (b) 4 503.12 125.78 Total 11 53 t-tab.(.05) t-tab.(.01) Table 4. Yield (kg/m2) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 3.50 1.75 11.88ns 19.00 99.00 Factor A 1 13.32 13.32 90.45* 18.51 98.50 Error (a) 2 0.29 0.15 Factor B 1 2.02 2.02 10.26* 7.71 21.20 AB 1 0.28 0.28 1.41ns 7.71 21.20 Error (b) 4 0.79 0.20 Total 11 54 Table 5. Yield (number of fruits/m2) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 67.17 33.58 0.24ns 19.00 99.00 Factor A 1 114.08 114.08 0.80ns 18.51 98.50 Error (a) 2 284.67 142.33 Factor B 1 352.08 352.08 10.72* 7.71 21.20 AB 1 0.33 0.33 0.01ns 7.71 21.20 Error (b) 4 131.33 32.83 Total 11 55 Table 6. Fruit length (cm) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 2.57 1.28 14.55ns 19.00 99.00 Factor A 1 0.56 0.56 6.34ns 18.51 98.50 Error(a) 2 0.18 0.09 Factor B 1 3.18 3.18 16.97* 7.71 21.20 AB 1 0.16 0.16 0.86ns 7.71 21.20 Error (b) 4 0.75 0.19 Total 11 56 Table 7. Fruit diameter (cm) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 0.00 0.00 3.74ns 19.00 99.00 Factor A 1 0.05 0.05 67.75* 18.51 98.50 Error (a) 2 0.00 0.00 Factor B 1 0.08 0.08 11.47* 7.71 21.20 AB 1 0.00 0.00 0.02ns 7.71 21.20 Error (b) 4 0.03 0.01 Total 11 57 Table 8. Leaves dry matter percentage (%) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 34.99 17.49 0.62ns 19.00 99.00 Factor A 1 17.76 17.76 0.63ns 18.51 98.50 Error (a) 2 56.13 28.07 Factor B 1 47.20 47.20 6.73ns 7.71 21.20 AB 1 5.60 5.60 0.80ns 7.71 21.20 Error (b) 4 28.04 7.01 Total 11 58 Table 9. Germination rate (%) S.F t-tab.(.05) t-tab.(.01) df SS MS f-cal Blocks 2 6.12 3.06 0.51ns 19.00 99.00 Factor A 1 347.76 347.76 57.66* 18.51 98.50 Error (a) 2 12.06 6.03 Factor B 1 46.41 46.41 11.28* 7.71 21.20 AB 1 32.01 32.01 7.78* 7.71 21.20 Error (b) 4 16.45 4.11 Total 11 59