Beowulf and 13th Warrior Comparison, Sample of Essays

3 pages, 1449 words

What is hydroponics? Hydroponics means water works, but is the growing of plants without soil. The earliest beginnings of hydroponics can be traced to Ancient China, Egypt, and India. It started when King Nebuchadnezzar II had built the hanging gardens of Babylon in 600 B.C. The garden was filled with plants grown in a stream of water. Nicolas de Saussure, a French chemist, had conducted crop nutrition. He saw that water, soil, and, air contained chemical elements obtained from plants. He concluded that in order to have a good growth, mineral substances from water, soil, and air are needed by the plants. Now days there are different types of hydroponics. Even thought plants are grown without soil they still need a growing medium. What are the nutrients used? Lastly, why do hydroponically grown vegetables better taste than ones grown soil? Hydroponics has many advantages over soil, like getting their nutrients directly and not have to search for it like in soil, that’s why hydroponics is better.

First, there are many types of hydroponic systems out there. The first is liquid hydroponic systems. According to Science Tech, in liquid hydroponic systems, no rigid there are no growing mediums to support the plants roots. These systems are closed systems. the plant roots is exposed to the nutrients without growing medium, and the solution is reused. According to Science Tech, nutrient film technique or NFT. Dr. Cooper developed NFT in the late 1960’s. NFT systems provide a thin layer of nutrients that flows through a polyethylene film supported on a wooden channel of PVC piping which contains the plant roots. This system excludes light and prevents evaporation. Ebb and flow is another type of system. According to Indoor Gardening, these systems are the easiest to build and maintain and is cheaper to set up. This system requires a growing tray that will hold the containers that the plants would be in. The growing tray is above a reservoir that is filled with water nutrient solution. Water is pumped from the reservoir to the growing tray. Then it slowly drains back into the reservoir to be reused. Draining provides a steady flow of oxygen to the roots of the plants. Another type of hydroponic system is run to waste.

1 page, 393 words

The Essay on Plant Growing Lamp Presentation

Good morning, everybody. Thank you for coming to my short presentation today. Let me introduce myself first. I’m Chris Wong, a medical assistant of Willis Health Centre. I’m very glad today to present to you our team’s proposed product, Dino, a plant growing lamp. My presentation will be covered into three parts. I’ll, first of all, introduce to you the background information about our ...

According to Flair Form, in a run to waste the excess nutrient is discarded instead of being re-circulated. The excess is either drained onto the ground, or collected. Plants are either typically seated in pots or leach trays. Aeroponics is another form of these systems. According to the Green Thumb, aeroponics plants grow with oxygen that is infused with nutrient solutions, allowing the roots to absorb nutrients faster and more easily. Aeroponics involves the use of sprayers, nebulizers, and foggers. in most of the aeroponic system, the plant roots are suspended above a reservoir of nutrient solution. A pump delivers nutrient solution through sprayer nozzles, which then drips or drains back into the reservoir. Aeroponic systems are favored because the increased aeration of nutrient solution delivers more oxygen to plant roots, which stimulates growth and prevents the forming of algae. There are many techniques in aeroponics such as nebulizers or foggers instead of spray nozzles to deliver nutrient solution. These techniques are more effective, because it reduces the solution to extremely small particles. which is rapidly absorbed by plant roots.

Second, even though hydroponics uses no soil it still need a growing medium. According to professor hydro from Simply Hydro, “oasis cubes are lightweight cubes that are designed for propagation. It is the most used growing medium, especially when growing from seeds or cloning. This has a neutral pH and retains water very well. The cubes are meant to be a starter medium and come in three sizes. Second, coconut fiber, coconut fiber is becoming more popular in the world. It is the first organic growing medium that offers high performance in hydroponic systems. There are many advantages; it maintains a larger oxygen capacity. It also has superior water holding capacity, which is a advantage for hydroponic systems that have intermittent watering cycles. Coconut fiber is also high in root stimulating hormones and offers some protection against root diseases including fungus infestation. Another type is Vermiculite. Vermiculite is most frequently used in with perlite. They both work well together, because of their advantages and disadvantages. Vermiculite retains moisture and perlite doesn’t. A mix of half of vermiculite and perlite is a very popular medium for the drip type hydroponic systems and ebb and flow systems. The only bad thing about vermiculite is that it retains too much water to be used by itself. It’ll a plants root when used by itself.”

4 pages, 1575 words

The Essay on Effects of Plant Nutrient Deficiency

This experiment aimed to determine the effects of nutrient deficiency on plants. This was done by examining tomato plants grown in a medium that contained all the nutrients needed to survive and comparing those results to plants that were grown in nutrient deficient mediums. The biomass and standard chlorophyll content were the focus of the experiment. The biomass was measured by taking the mass ...

Lastly, the nutrients are key it is the food source of the plants. Both hydroponic and soil-grown plants need 16 elements in order to grow. According to kids’ world, “three elements include nitrogen, phosphorous, and potassium are all known as macronutrients. Three other elements known as secondary nutrients are calcium, sulfur, and magnesium. The remaining nutrients are called micronutrients. All sixteen of these nutrients are vital to any growing system. Nitrogen is involved in photosynthesis and transfer of energy. Nitrogen is a part of the plants chlorophyll that’s what’s responsible for photosynthesis. It Helps plants with rapid growth, increasing the speed of seed and fruit production. Phosphorus is an essential part of the process of photosynthesis. It involves the formation of all oils, sugars, starches, etc. It helps with the plants maturity it transforms solar energy into chemical energy. Growing fast encourages blooming and root growth. Potassium is what is best liked by plant for it is absorbed by plants in larger amounts than any other mineral. It helps with protein, photosynthesis, fruit quality and reduction of diseases. Calcium is an essential part of plants it helps with the plants cell wall structure and, provide normal transportation of other elements, and promotes the plants strength. Magnesium is part of the chlorophyll in all green plants and also essential for photosynthesis. It helps activate the plants enzymes needed for growth. Sulfur is essential to a plants food production of protein. It promotes the development of enzymes and vitamins. It also helps the chlorophyll formation. Improves root growth, seed production, and resistance to cold.”

4 pages, 1879 words

The Term Paper on Marijuanathe Perfect Plant

Prior to the twentieth century, the marijuana plant (then more commonly referred to as hemp) was the single most important industrial plant, or non-food producing crop in America and the world (Getpman 1990). Archeologists report that marijuana was possibly the first plant cultivated by humans. They estimate that date at approximately 8000 BC (Columbia University). As early as 4000 BC, pottery ...

* In conclusion, hydroponically grown plants are better, because it promotes root growth without the roots having to search for it in soil. Focusing all that energy to the plant making it grow taller, faster, and healthier. In hydroponics it also avoids the trouble of pest and fungi making it even safer and healthier for the plants. In hydroponics it is also possible to grow it as big as you want and start having the plant produce whatever wanted by adding extra nutrients to water. All plants grown hydroponics should use a pH indicator checking to see if the water is to acidic or base. Mostly all plants like to have it neutral.

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Works Cited

Davis, Raymond etc. “Acid Base Titration and pH”. Modern Chemistry. Austin, TX: Holt, Rinehart, and Winston, 2009. December 6, 2009

“Ebb and Flow Hydroponic Systems”. Indoor Gardening guide. 2005. December 6 2009.<http://www.indoor-gardening-guide.com/indoor-hydro/ebb-and-flow.html>

“Growing Mediums”. Simply Hydroponics and organics. 2008. December 6, 2009 <http://www.simplyhydro.com/growing1.htm>

Merle. H. Jenson.”Hydroponics”.Department of Plant Sciences, University of Arizona, Tucson, AZ. October, 1997. December 6, 2009 <http://ag.arizona.edu/PLS/faculty/MERLE.html>

“Plant Nutrients”. Kids World. <http://www.agr.state.nc.us/cyber/kidswrld/plant/index.htm>

Ramesh, Thiyagarajan, Umadevi. “Hydroponics”. Science Tech Enterprises. January 2007. Tamil Nadu Agricultural University. December 6, 2009 <http://chsfalcons.org/library/documents/workscitedguideweb2009-2010.pdf>

2 pages, 979 words

The Essay on Hydroponics & plant

The gardening of plant, its cultivation in nutrient solutions other than soil by means of mixtures of the necessary nutrient elements dissolved in water is called hydroponics. This was used by plant physiologist in 1930’s where it begun as an outgrowth technique used in plant nutrition experiment. Recently there are two methods that is used one is a process in which plant will grown on permeable ...

“Run-to-waste System”. Flairform. 21 October, 2009. December 6, 2009 <http://www.flairform.com/hints/run_to_waste.htm>

“What is Aeroponics?”. The Green Thumb. 2005. December 6, 2009 <http://www.gthydro.com/whatisaeroponics.htm>

* Bibliography