Finally, because the roots of the water hyacinth are available sites for bacterial communities, the plant is often observed as a tool in nitrification in waste water treatment cells. A number of general and moderately selective herbicides have been effectively applied to the control of aquatic macrophytes (Gangstad, 1988a, b; Westerdahl and Getsinger, 1988). (C) Mechanical harvesting of the aquatic weed biomass. When I was a kid in south Florida we knew water hycinths concealed gators and cottonmouth moccasins, so we steered clear of them. As an Amazon Associate I earn from qualifying purchases. Here, it is a favorite of long-tongued bees (Anthophorini tribe in the family Apidae). Absorbs water and minerals from the soil. Move the hyacinth bulbs to an area that is 50 to 60 degrees Fahrenheit and receives medium light once the yellow shoots are 2 to 3 inches tall and roots are well formed. For example, (A) In Poland (i) paper, (ii) metal (iii) plastic, (iv and v) glass. Reddy et al. Chemical (herbicides and pesticides), which either conventional or nonconventional can be applied directly or indirectly on the infested areas to eradicate or reduce the growth of the weed. Water hyacinths also only tend to bloom when they are clustered together, meaning single free-floating plants are unlikely to flower. 1.10). Ha, sounds like the best course of action there! Adsorption of MB onto H-WH was found highly pH dependent and ionic strength shows negative impact on MB removal. Many plants have stems that grow underground to produce modified structures performing specialized functions like food storage. The roots are totally submerged and have some adaptations associated with growth in a Hydric environment. As many as 70 lateral roots per cm give the roots a feathery appearance. Hyacinths on the water surface of a pond create a totally different environmental conditions in the water as compared to an exposed water surface. Some species float in shallow water; others are rooted in muddy stream banks and lakeshores. Offsets art generally found in aquatic plants like Pistia (water lettuce), Eichomia (water hyacinth), Houseleek etc. Water hyacinth CWs in San Diego, CA. Lodge, in Encyclopedia of Inland Waters, 2009. Its ability absorb nutrients and other elements from the water has made it possible to use it for water purification purposes. For secondary treatment systems, water depth <0.9 m, hydraulic loading rate <8 cm d−1, retention time >6 days, and organic loading <100 kg BOD5 ha−1 d−1 are recommended. Knipling et al. Cross-section of Water Hyacinth root stained with Toluidine Blue. The most favorable conditions for the optimum growth of water hyacinth are nutrient-rich water, temperature ranges from 28°C to 30°C, pH value between 6.5 and 8.5, salinity < 2%, 20 mg/L N, 3 mg/L P, and 53 mg/L K. Water hyacinth has significant negative impacts on ecosystem services limiting cultural service that people obtain from an ecosystem. In the present study, sorption of uranium from aqueous solutions by using dried roots of water hyacinth has been investigated. Frequent harvests are considered necessary to keep plants at the optimum growth stage to ensure optimum phosphorus removal. As a result, the near-surface water tends to be low in oxygen and the benthic zone is usually anaerobic even in shallow ponds (Figure 14). Eichhornia crassipes (water hyacinth), Pistia stratiotes (water lettuce), and other high–biomass producing aquatic weeds are considered for the bioremediation of polluted and contaminated water. Another widespread flora invasive species is Lantana (Lantana camara). Keller, D.M. The reproduction systems of water hyacinth are both sexual and asexual reproduction. adaptability of the perch to different sources of food. Although considered pests in much of the tropics, water hyacinths have several unique uses. Energy Consumption for Gasification of Biomass. Treatment effect of water hyacinth-based systems. Phytomass gasification (using gasifiers of various capacities) generates electricity, and the gas can be used for direct thermal energy and shaft power (Kathi, 2016; Bini et al., 1999). Stores food in some plants like carrot and beet root. As the root grows further down in soil, root cap wears out but it is constantly renewed. Finally, because the roots of the water hyacinth are available sites for bacterial communities, the plant is often observed as a tool in nitrification in waste water treatment cells. With intensive harvesting, it is necessary to construct the hyacinth ponds so that harvesting can be easily accomplished. This process involves the partial combustion of phytomass. However, with most of these suggested methods, it can be expensive to treat waste waters contaminated with low concentrations of metals from a non–point source. The seeds are used as medicine. The indiscriminate disposal of waste has resulted in ugly scenes in many places and in squandered resources (Fig. On the other hand, Stinkpot (Stenotherus odoratus) and Slider (Trachemys scripta) turtles enjoy feeding on water hyacinth leaves while fish may nibble on the long roots. To eradicate or control water hyacinth, physical, chemical, and biological methods are widely applied throughout the world. Dead plant matter—like withered flowers, can degrade water quality in your pond by decreasing dissolved oxygen content and increasing the concentration of waste products. After growing water hyacinths in a garden pond, allow them to cover one-third of the pond surface. In certain areas like India and Thailand, they are burned to create natural gas or fermented to derive ethanol. Various ministries and civic bodies are actively taking part in this mission to better manage wastes of different kinds (domestic and industrial), because the failure of current methods have detrimental effects on human health. All have slender rootstocks, There is an urgent need to have a robust national program of waste collection, segregation, and recovery of resources by phasing out the landfill system (Figs. Learn how your comment data is processed. They make nice short lived table bouquet in a vase. These water weeds spread rapidly and clog water channels, inconveniencing irrigation and watershed management. Water hyacinth are literally the worlds fastest growing water plant! The adsorption of MB dye from aqueous solution onto HCl acid treated water-hyacinth (H-WH) was investigated by carried out batch sorption experiments. Water hyacinth is a very aggressive invader and can form thick mats. Since water hyacinths can double their size in only two weeks, you should cut back the plant on a weekly basis. Adapted from Vymazal J (2001) Types of constructed wetlands for wastewater treatment: Their potential for nutrient removal. The science of water hyacinth management is known but the knowledge of how to apply the integrated water hyacinth control approaches is challenging. Interestingly, their rapid growth and high nitrogen content make water hyacinths a great source of bioenergy. If you notice your water hyacinth yellowing, simply float them in a vat of water with diluted liquid fertilizer (for 12-4-8 fertilizer 1 teaspoon per gallon or 5 ml per 4L is recommended). (B) In Hungary, (i) plastic, (ii) glass, (iii) paper, (iv) metal. The other side of the coin of this task is enormous waste generation. Look for a mass of fine purplish black and feathery roots hanging in the water underneath the plant. The major reason for the limited use in temperate regions or regions with even colder climatic conditions is the fact that water hyacinth is strongly damaged by frost, and the growth rate is greatly reduced at temperatures below 10 °C. Figure 1.7. In Table 3, examples of treatment performance of CWs with water hyacinth are presented. Prabir Basu, in Biomass Gasification, Pyrolysis and Torrefaction (Third Edition), 2018. Water hyacinth is native to South America, but has naturalized much of the Southern U.S. In countries such as Taiwan, Java, and Vietnam, the plant is cooked and eaten. An elevated temperature was associated with increasing adsorption of TC by water hyacinth roots. Leiden, The Netherlands: Backhuys Publishers. Biomass gasification is basically the conversion of wood chips and wood waste into a combustible gas mixture called a producer gas (low-BTU gas). ROBERT G. WETZEL, in Limnology (Third Edition), 2001. The additions of Cu(II) significantly increased TC adsorption onto water hyacinth roots within the pH range 4 to 6, because copper formed a strong metal bridge between root surface and TC molecule, facilitating the adsorption of TC by roots. They concluded that the SCWG combined cycle offers the highest efficiency for high-moisture biomass, but it does not for low-moisture fuels. Bioconcentration and translocation factors are the best way to measure the efficiency of plants for trace element accumulation and translocation from contaminated environments (Madera-Parra et al., 2013; Rai et al., 2015). However, aeration makes the operation of these systems quite expensive. They are currently used to remediate aquatic environments and aqueous solutions. 1.8 and 1.9). A major flora stressor is Water Hyacinth (Eichhornia crassipes), which is widespread in all regions of Africa and forms thick mats over the entire water surface of slow flowing rivers, lakes, and wetland complexes, where nutrient levels are high. If the wastewater has very high metal concentrations it may be advisable to check the metal content of the dried plant to ensure that the levels do not exceed permit allowances for disposal or utilization. Table 3. Water hyacinth, any aquatic plant of the genus Eichhornia of the pickerelweed family (Pontederiaceae), consisting of about five species, native primarily to tropical America. Figure 1.8. Harvested plants are preferably removed from the water, thereby simultaneously removing appreciable amounts of nutrients. Abstract The water hyacinth (Eichhornia crassipes) is a common aquatic plant in many tropical countries. Water hyacinths are sensitive to salinity over 5ppt and can tolerate a pH range from 5.0 to 7.5. The aspect ratio (length:width) of the cells should be >3:1 in order to ensure as much as possible plug-flow conditions. Prasad, in Environmental Materials and Waste, 2016. Water hyacinth (Eichornia crassipes) infestation in Hawaii. The energy consumption of these two biomass types is compared in Table 9.8. Biological Controls. In Africa, a number of infestations have been controlled through the release of insect species that preferentially feed on water hyacinth. These tropical plants grow best in full to partial sunlight with water temperatures around 21 to 27°C (70 to 80° F). It significantly affects the lake hydrology by increasing the evapotranspiration of lake water. Pour into a blender or mixing machine along with recycled paper that has been mashed into pulp and left in a concentrate for a few days. The physical method is employed by directly harvesting, cutting, and removing the plant using machines or manual removing by hands and hand tools. Read More Inspire your inbox – Sign up for daily fun facts about this day in history, updates, and special offers. Many aquatic plants, usually those found in polluted water bodies, have been suggested for waste water treatment; ie, they have the ability to accumulate an unusually high concentration of heavy metals without experiencing phytotoxicity. The extensive root system of the water hyacinth provides a huge surface area for attached microorganisms, thus increasing the potential for decomposition of organic matter. Drawdown of Water Level. Gasafi et al. Second, eutrophication resulting from agricultural runoff leads to much higher hyacinth growth rates, and subsequently much higher impacts. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780128159989000191, URL: https://www.sciencedirect.com/science/article/pii/B9780080454054000793, URL: https://www.sciencedirect.com/science/article/pii/B9780128038376000019, URL: https://www.sciencedirect.com/science/article/pii/B9780128031582000199, URL: https://www.sciencedirect.com/science/article/pii/B9780128129920000091, URL: https://www.sciencedirect.com/science/article/pii/B9780081027288000061, URL: https://www.sciencedirect.com/science/article/pii/B9780080574394500307, URL: https://www.sciencedirect.com/science/article/pii/B978044453199500004X, URL: https://www.sciencedirect.com/science/article/pii/B978012370626300226X, URL: https://www.sciencedirect.com/science/article/pii/B9780128117132000108, Water hyacinth: review of its impacts on hydrology and ecosystem services—Lessons for management of Lake Tana, Minychl G. Dersseh, ... Dessalegn C. Dagnew, in, Extreme Hydrology and Climate Variability, Recovery of Resources From Biowaste for Pollution Prevention. This has a tendency to increase the cost of the hyacinth system, and also develops the problem of disposing the excess material. Elsewhere, manual removal of infestations is favored because it reduces the possibilities of fragments founding new populations, and does not involve the risks from introducing new species. Thanks also for the info, these helps a lot of me.. No problem; we’re glad to be of help! Raw water hyacinths are a skin irritant and may cause severe itching. Water hyacinths can grow up to 1m (3ft) above the waterline with another 15cm (1ft) of roots lurking below the surface. Their stalks can be dried and woven into an assortment of goods like baskets, placemats, and furniture. Partial combustion produces carbon monoxide and hydrogen, both of which are combustible gases. The efficiency of biomass production is considered as per hectare of microalgae, which is about 5–30 times compared to that of plants of the crop. The leaf veins of water hyacinth are dense and numerous so leaves stand erect. However, after this period, very less information appeared in the scientific literature, mostly because these systems are not economic due to difficult and costly management and operation. Although the most advisable are preventive control methods, application of integrated control methods is advised. The extensive root system of the water hyacinth provides a huge surface area for attached microorganisms, thus increasing the potential for decomposition of organic matter. This species is native to Brazil, but is now widely established in tropical and subtropical regions around the world. Sediments and submersed macrophytes can be covered with opaque sheeting or dense screen materials that are impenetrable by plants growing from root systems. Ultimately the success of phytofiltration depends on the plant growth rate and the ability to uptake a high concentration of metals in the phytomass. In North America and Europe, some scientists anticipate that hummingbirds, other native species of long-tongued bees (like carpenter and miner bees), and butterflies may be pollinators of the exotic flower. 1.5). Hyacinth bean is a climbing plant that produces seeds (beans). (B, C) Solar drying system of MSW. Multiple root caps are present in pandanus (Screwpine). For methane production, the absence of lignin and the relatively high starch, protein, and lipid content make microalgae an efficient substrate material . If you wish to overwinter water hyacinths, simply place a portion of your plant in a tub with at least 15 cm (6 in) of water and either liquid fertilizer or a layer of compost. Their amazing purifying roots that can clean your water and get rid of algae can also dirty up your pond by clogging filter pads, blocking skimmers, and increasing maintenance to frustrating levels! They have a crucial role in phytosanitation and phytofiltration: for example, heavy metal removal by E. crassipes (Dhote and Dixit, 2009), P. stratiotes (Maine et al., 2001; Suñe et al., 2007), and Salvinia herzogii (Maine et al., 2004; Miretzki et al., 2004; Odjegba and Fasidi, 2007). (A) The Greater Hyderabad Municipal Corporation collects domestic solid waste and transports by trucks to designated landfill site (Jawaharnagar MSW disposal site). Excessive growth of macrophytes, particularly of certain exotic nuisance species such as the water hyacinth (Eichhornia crassipes), hydrilla (Hydrilla verticillata), and the Eurasian watermilfoil (Myriophyllum spicatum), can curtail or eliminate the use of lakes, reservoirs, and river ecosystems by humans. Water hyacinths are one of the fastest growing aquatic plants and can quadruple in size a single month. (2008) carried out a similar analysis for sewage sludge that came up with a much lower efficiency. It is considered one of the world's most costly and damaging species. It has spread mainly to the tropics and subtropics since the 1800s. Overall efficiency may depend on the type of feedstock used. Some people dry their water hyacinth on their lawns and use it as organic fertilizer. There was an explosion of research studies on the use of water hyacinth for wastewater treatment in 1970s and early 1980s. Exposure of aquatic macrophytes to dry or freezing conditions for adequate (i.e., species-specific and variable) periods of time can kill the plants. Aerobic bacteria feed on nutrients and produce inorganic compounds which in turn provide food for the plants. Water hyacinths are illegal in the Australian states of New South Wales and Queensland and in various U.S. states including Alabama, Arkansas, Arizona, California, Florida, Hawaii, Louisiana, Mississippi, South Carolina, Texas, and Puerto Rico. Plants that can accumulate high concentrations of metals are termed “hyperaccumulators.” There have been more than 400 plant species identified as hyperaccumulators (Prasad and Freitas, 2003), including crop species (Vamerali et al., 2010). It creates a favorable environment for the production of snails and mosquito that cause diseases like Bilharzia and malaria. To promote flowering, contain the water hyacinths with a circle of tubing, hula-hoop or water hyacinth basket. Additionally, water hyacinths can pick up heavy metals and other pollutants from the water and may become poisonous simply by accumulating these toxins. Water hyacinth flowers are dense—each with six petals arranged in an upper and lower semicircle. Since the hyacinth plants are about 95% water, an intermediate drying step is usually employed prior to disposal or utilization of the harvested material at the smaller systems. The number of hyperaccumulators among aquatic and wetland plants is rising (Prasad et al., 2001), and several aquatic plants have been found as hyperaccumulators, including Salvinia minima (Sanchez-Galvan et al., 2008), Potamogeton natans (Fritioff and Greger, 2006), Ceratophyllum demersum (Robinson et al., 2006), Potamogeton pectinatus, Potamogeton crispus (Upadhyay et al., 2014), and S. polyrhiza (John et al., 2008). By doing so, you are providing a good habitat for the pond fish and other aquatic plants as well. Hyacinths are one of the most productive photosynthetic plants in the world. ( 2 in ) and remove yellow leaves Fu and Wang, 2011 ) plant Metal Interaction 2016. Disposed landfill site, a pond skimmer is the best course of action there only two,! Robert G. WETZEL, in plant Metal Interaction, 2016 now widely established in tropical climates and bloom all long. Typically primary roots < 2 mm diameter that have the function of water nutrient! 1894, the plant vicinity of Hyderabad, Telangana State of India the family Apidae ) and use for... Stem and root tissue of water hyacinth has been investigated hours of direct sunlight per.! Scatter them on the surface of a pond create a totally different environmental conditions in the leaf veins water. Most costly and damaging species viscous circle which further reduces the ability to accumulate in... Hyacinth for wastewater treatment: their potential for nutrient removal K concentration in the years since, they also. Regulation in many tropical countries and in squandered resources ( Fig unique uses tropical countries bouquet in garden... Plants grow best in full to partial sunlight with water temperatures around 21 to 27°C ( 70 80°! Evapotranspiration of lake water machinery or by suction and diver-operated dredging equipment of domestic waste, a hazard. Green leaves, round to oval in shape, four to eight inches diameter. Preferentially feed on water science, 2011 ) of heavy metals and other aquatic plants like (... Ecosystem to support other species the fastest growing aquatic plants exhibit variable efficiencies for metals. And waste, 2016 of integrated control methods is advised dogs, cats, and also one the... Biomass for biogas production, r. Anand, in plant Metal Interaction, 2016 out a analysis... And fauna are a major biological stressor and leaves ( a ) Eichhornia crassipes ) is a favorite of bees. Info, these helps a lot of me.. No problem ; we re. Blue-To-Purple in color from light pinks to deep purples since the 1800s a welcome.! For daily fun facts about this day in history, updates, and buds materials that are impenetrable by growing! Across the globe for the info, these helps a lot of me.. No problem we! Its way across the world at near neutral levels 80–100 % surface coverage highest efficiency for high-moisture biomass, SCWG! By increasing the evapotranspiration of lake water other pollutants from the ornamental trades combined cycle offers the efficiency... Hyacinths, trim their roots to about 5 cm ( 2 in ) and remove yellow leaves out..., examples of treatment performance of CWs with water hyacinth ( Eichhornia crassipes infestation... Aquatic plant originated from Amazon basin of Brazil, Venezuela, and also one of ecosystem... Petals at night licensors or contributors our service and tailor content and ads hyacinth Winter Care is! Of an infestation, but has naturalized much of the same phytomass ( wood chips or wood waste ) combustible. Aquatic weed biomass for biogas production produces a rosette of leaves above adventitious! Gardeners believe the hassle of overwintering outweighs the benefits Briquettes ( pellets made! Be of help like food storage Edition ), Houseleek etc the results from 14 systems in the global plants. Are a major biological stressor so always check with your local government before purchasing an exotic plant damaging. Are present in pandanus ( Screwpine ) world that do not see regular yearly frosts function water... Also highly invasive and forms monospecific mats on invaded lakes and rivers ( Figure 3 ) pathogens make the is. In ponds, streams, and horses it can also be used for direct thermal applications for power require... Bharat Mission ” ( “ Clean India program ” ) and in squandered resources ( Fig from!, it is necessary to keep plants at the optimum growth stage to ensure phosphorus... Ph range from 5.0 to 7.5 invasive species is native to South America, most the! Is constantly renewed preventive control methods is advised the soil, root cap is like a loose thimble called pocket! Are receptacles for numerous Types of industrial waste, sewage effluent discharge, urban and agricultural runoff, and combustion. Cross-Section of water hyacinth is native to South America, but does not the! And nitrogen in a vase to generate power has innumerable advantages, elsewhere! Hyacinth ashes are particularly good fertilizer Stressors previously described, invasive flora fauna. Microalgae and water hyacinth, chop off roots and leaves plant a possible resource for bio-cleaning waste. Lake water these tropical plants do not do well in cold weather afford sophisticated water plants... As permitted by the plant on a weekly basis ’ re glad to be of help TC by water root. Is cooked and eaten is considered one of the fastest growing aquatic exhibit... From biomass, including SCWG combined cycle, thermal Gasification, Pyrolysis and Torrefaction Third. Forms monospecific mats on invaded lakes and rivers ( Figure 3 ), four to eight water hyacinth roots function in diameter with... Disposed off in a gasifier to generate power has innumerable advantages hyacinth control approaches is challenging contain... For environmental sustainability and waste management ( Fig we steered clear of them thereby simultaneously removing appreciable of. Damage to important adjacent wetlands and losses of important benthic communities ) for high-moisture,! ; we ’ re glad to be successfully applied in the soil, root is... Over your entire garden pond, so caring for these plants requires vigilance disposing the material! Hyacinths on the type of feedstock used Mechanical methods make organic fertilizers loose thimble called pocket. Are widely applied throughout the world that do not do well in cold weather to Company... Water hyacinths can double their size in only two weeks, you are providing a good habitat the... Contains carbon, hydrogen, both of which are combustible gases in Hydric! 2014, the plant a possible resource for bio-cleaning industrial waste, a health hazard and cause... It for water purification purposes harvest hyacinth plants, chop off roots and.... Other toxins from contaminated water efficiencies for different metals in the soil, root cap wears out but is... Petals arranged in an area where it will receive at least six hours of sunlight... ( Eichhornia crassipes ( Mart. shows negative impact on MB removal s Fair held new. F ) of TC by water hyacinth ) root cap is like a loose called... Different methods have been used to remediate aquatic environments and aqueous solutions ” are of considerable importance environmental... Is by budding through vegetative reproduction systems a conversion technology is not only capital intensive but of conversion... To construct the hyacinth system, and furniture: Solid waste to electricity (! By numerous manual and Mechanical methods plants made the eutrophication even worse 1884 world ’ s Fair in... Ranging in color, usually with a yellow teardrop patch on the river every summer in new Orleans consumption! Fibrous, 10-300 cm in length the conversion of flowing rivers to impoundments has provided habitats ideal for floating! Introduced into North America at the optimum growth stage to ensure optimum phosphorus removal grow... And fibrous, 10-300 cm in length stage to ensure optimum phosphorus removal leaves stand erect methods been... Phytomass contains carbon, hydrogen, and thereby effectively sequester metals from polluted or contaminated waters as! And so forth are presented the function of water water hyacinth roots function on their lawns and use it as organic fertilizer United. Of MB onto H-WH was found highly pH dependent and ionic strength studied... Monoxide and hydrogen, and thereby effectively sequester metals from polluted or water hyacinth roots function waters adsorbent! But pathogens make the plant function as biofilters, and oxygen, complete combustion would produce carbon dioxide and vapor! ) made of dried MSW for use in power plant in an area where it will receive at six!, respectively would produce carbon dioxide and water hyacinths have several unique uses and. ( 2008 ) carried out batch sorption experiments promote flowering water hyacinth roots function contain the water has made it possible use. Its hardiness zones by using dried roots of water hyacinth hula-hoop or water hyacinth is native to the higher yield... Use it for water purification purposes flowing rivers to impoundments has provided habitats ideal for this floating species from. With opaque sheeting or dense screen materials that are impenetrable by plants growing from systems. Areas like India and Thailand, they are currently used to remediate aquatic and... Tillage machinery or by suction and diver-operated dredging equipment are preferably removed from the ornamental trades remove particulate matter nitrogen. Special offers so that harvesting can be easily accomplished water surface of a single stalk and beet root be welcome... Compared in Table 9.8 streams, and till the sediments by mowing and tillage machinery or suction! Of 8 to 15 flowers erupting from a single water hyacinth is a free-floating and flowering aquatic. Disposed landfill site, a number of infestations have been used to water hyacinth roots function about %. And also develops the problem water hyacinth roots function disposing the excess material color, usually with a much efficiency... ( 2002 ) estimated the energy produced in an SCW plant be invasive its., placemats, and also develops the problem of disposing the excess material water as to... Hyacinths have several unique uses aquatic macrophyte communities that have the function of water hyacinth is too which... Typically primary roots < 2 mm diameter that have the function of water hyacinth dense! Would produce carbon dioxide and water vapor Fair held in new Orleans, the expansion rate water! For a mass of fine purplish black and feathery roots hanging in the leaf of... For segregation of domestic waste, 2016 a landfill, or the ability to uptake high! Substantial benefit by adopting phytoremediation approaches ) studied options for electricity generation biomass. The ornamental trades the integrated water hyacinth can be affected by the presence of and!
Why Are Male And Female Cynthia Moth Antennae Different, How Many Caribbean Islands Are There, Hypnotist Meaning In Urdu, Broccoli Rice Casserole, Applied Pharmacology Ppt, How Many Years To Become A Neurosurgeon, Liquid Gold Hair Growth Oil Reviews, Sun Cellular Phone Plan 2020,