Winter Ecology Ice

Roman Dictators

Roman Dictators The behavior of the Roman dictators- or Magister populi  Praetor Maximus- changed over time, eventually turning into the ruthless, murdering heads of state we now think of (e.g., Sulla), but thats not how they started. The first of the Roman dictators may have been T. Lartius in 499 B.C. His master of the Horse was Sp. Cassius. Consulship and Limited Government After the Romans expelled their kings, they were well aware of the problems of letting a single man hold absolute power for life, so they created a split appointment with a set time period, one year. The split appointment was to the consulship. Since consuls could cancel each other out, it wasnt the most efficient type of government leadership when Rome was in a  crisis caused by war, so the Romans developed a very temporary position that held absolute power in cases of national emergency. Roman Dictators and Imperium Roman dictators- the Senate-appointed men who held this special position- served for 6 months at a time or shorter, if the emergency took less time, with no co-dictator, but instead, a subordinate Master of the Horse (magister equitum). Unlike the consuls, Roman dictators didnt have to fear retribution at the end of their terms in office, so they were free to do what they wished, which was, hopefully, in the best interests of Rome. Roman dictators had imperium, like the consuls, and their lictores carried fasces with axes on either side of the city walls, instead of the usual fasces without axes within the city of Romes pomoerium. UNRV notes that there were 12 lictors for dictators before Sulla and 24 from his day. Source H.G. Liddells A History of Rome From the Earliest Times to the Establishment of the Empire

Contributions of the Austrian School of Thought Essay

Contributions of the Austrian School of Thought - Essay Example The historical school suggested that economic science cannot generate universal principles so scientific research should study historical examination in detail. Principles of Economics reiterated the universal laws’ view of political economy using marginal analysis. Roscher’s students gave Menger and his followers the title of Austrian School for being faculty members at the University of Vienna. There have been no leading figures in economists from any Austrian university in the Austrian school of economics since the 1930s. Between 1930s and 1940s, scholars associated with the Austrian school were located at different universities in Britain and the US. Many ideas of the mid-twentieth-century Austrian economists originate in the classical economists’ ideas or ideas of economists from the early-twentieth-century. The present Austrian school economists are influenced by modern economists. There is no substantive meaning of the label â€Å"Austrian†, though a unique Austrian school of economics does exist in the economic profession. This article discusses the major propositions of economics believed by the Austrians. According to the first proposition, only individuals select which implies that man starts all economic analysis with plan and purpose. Choices are made by individuals rather than by collective entities. The second proposition suggests that the market order study is basically about exchange behavior and organizations undergoing exchange. The science exploring market order is categorized under catallactics. Catallactics discusses emerging exchange relationships in the market, bargaining in the process of exchange, and the institutions that participate in exchange. The third proposition states that the social sciences’ facts are what individuals think about and also believe. Being humans, we can understand other humans’ purposes and plans. Human action sciences vary from natural sciences. Human sciences are ruin ed with them being forced into natural sciences’ philosophical mold. The fourth proposition considers costs and utility to be subjective because the human mind filters all economic phenomena. One has to choose among the various available paths while deciding the courses of action. Focus on choice alternatives leads to opportunity costs. Any action’s cost is the value of the most valuable alternative left out while that action is selected. The fifth proposition states that economization of the price system is based on the information needed by individuals to process in decision making. Price summarizes exchange terms on the market. Market prices quickly change with the change of underlying conditions thus causing people to quickly adjust. According to the sixth proposition, private property is a compulsory condition in the means of production that is needed for rational calculation of economics. Private ownership offers strong incentives for scarce resources’ eff icient allocation. Economic planners cannot correctly calculate the alternative use of production means if money prices do not reflect the means of production’s relative scarcities. The seventh proposition considers the competitive market to be an entrepreneurial discovery process as competition is thought by many economists to be a state of affairs. The entrepreneur plays the role of change agent that pulls and prods markets in different directions since competition is an activity. Market economy and

Business Essay Example | Topics and Well Written Essays - 1000 words - 7

Business - Essay Example The decision of the body will be rested in the hands of the owner and the government or the legislative body of the state. However, many companies fail to follow interests of the last two components of the corporate law which are the citizens and the nation as a whole, its integrity, environment and culture. The trend of globalization has further intensified the competition in the business world, where each company tries to overpower other by whatever means available. Thus, in this race for power and money, it is the local people who become the victim of lies, cruelty and cunningness of companies’ money oriented intentions and plans (McFarland, 2004). This paper is an attempt to illustrate the real essence of Corporate Social Responsibilities (CSR) and how and which companies have violated it for their self interests. For the paper argument, the Canadian documentary film â€Å"The Corporation† by Joel Bakan is made the prime source (Bakan, 2012). Example of Companies 1. Johnson & Johnson J&J is a renowned brand of cosmetics, shampoo and skin lotions. The company is one of the trend setters in the cosmetics world hiding which hides the danger behind their â€Å"good for skin† products due to the brand reputation (CBS NEWS, 2012). The products of the J&J Company have been found to contain a diluted amount of Carcinogen Formaldehyde in their baby shampoos. In their effort to create a brand new image of a baby shampoo, they came up with an idea of â€Å"No More Tears† to attract their customers. From a customer point, it can be regarded as a great innovation in baby shampoo, but on the cost of healthcare issues (Mercola, 2011). Carcinogen Formaldehyde is one of the materials that can risk to Cancer in the later stages of life. This chemical is also present in their adult products and raises the question of whether their products are actually made for the benefit of people or just for their own benefits (NCI, 2011). However, after been fo und guilty by the Health and Environment Group, the company announced to remove those materials from its products by 2015. These factors leaves the questions that if products of the most famous company which are launched after great research are not safe, can the other products be trusted? (CBS NEWS, 2012) 2. Hershey Hershey is the largest chocolate producing company with worldwide recognition and consumers. It is evident that sales of the company is incomparable to sales of an average company, but still the greed for money cannot be ever satisfied (Hsu, 2012). Hershey Company has been recently indicted by utilizing child labor of Africa, for their cocoa harvesting and refining. The corporate government laws and those of International Labor Organization clearly states that child labor is an act of injustice and should be practiced anywhere in the world (Huff Post Business, 2012). Practices of child labor in the underdeveloped regions show their poverty and strive to earn their livel ihood. However, if the same practice is supported by giant business personnel and organizations like Hershey then it is a clear sign of immorality and easy measure to get low cost labor (Hsu, 2012). 3. KFC KFC is another big name when talking of corporate giants. It is the world’s leading fast food chain with its specialty in fried chickens. It is suspicious that how they fulfill the growing demand of chicken food items throughout the world, with the limited number of farming

Computerized provider order entry(CPOE) Assignment

Computerized provider order entry(CPOE) - Assignment Example These systems are used for various reasons in healthcare. It is worth noting that this system makes it possible for individuals in the health care industry to insert precise and detailed analytical information relating to results from medical investigations to identify presence of disease, prescription information, as well as nursing information and guidelines. This helps individuals to keep proper electronic records. CPOE is a computerized system that helps link medical practitioners with patients medical information, links a medical practitioner with his or her colleagues in the health sector, links all computerized systems in a health institution, and also links one medical unit with other units or departments. CPOE helps reduce errors in the medical field. Some of the information entered in the CPOE system include prescribed amounts of medicines, sensitivities, and patients medical history. Availability of all this information is important as it helps healthcare providers consider all the benefits and possible effects of medications and hence minimize inaccuracies. A methodical investigation conducted in Brigham and Womens Hospital focusing on the effectiveness of CPOE, there was a decline medical mistakes or inaccuracies by fifty five percent in a period of four and half years (Doolan and Bates, 2002) To understand the benefits of CPOE, it is imperative to compare it with paper-based systems. According to Doolan and Bates (2002), "The advantages of CPOE over paper-based methods include decreased transcriptions, increased accuracy and completeness, and the ability to enter orders in multiple locations" (A4). This systems also makes it possible for health care providers to make resolutions regarding the patients health status aptly and timely as all information is readily available and computerized. The implementation of CPOE improves competence and effectiveness in health delivery systems. This is

Indian Civilization Essay

Indian Civilization Essay Introduction India civilization begins from riverbanks which is the Indus river and the Ganges river. India derives its name from the Indus river. Knowledge of Indian civilization has come from two leading cities: Mohenjo Daro and Harappa. These cities are carefully planned where they had wide, straight streets lined with brick houses. These cities had elaborate drainage and sewer systems. Achievements in science and technology of ancient India are divided into few sub parts such as mathematics, astronomy, list of Indian inventions, etc. The history of science and technology in India begins with prehistoric human activity at Mehrgarh (known as Pakistan in present-day) and continues through the Indus Valley Civilization to early states and empires. The British colonial rule introduced western education in India in its efforts to give rise to a native class of civil servants, exposed a number of Indians to foreign institutes of higher learning. Following independence, science and technology in the Republic of India has included automobile engineering, information technology, communications as well as space, polar, and nuclear sciences. The earliest evidence of technological progress in the Indian subcontinent is to be found in the remains of the Harappan civilization (4000-3000 BC). Archaeological remains point to the existence of well-planned urban centres which is orderly fashion along with roads and drainage systems complementing them. The drainage systems were particularly remarkable for the times since they were built underground and were constructed in a manner to allow for regular cleaning. Smaller drains from private homes connected to the larger public drains. Larger private dwellings (flats) were constantly multi-storied and all homes were constructed from standardized fired bricks and provided for separate cooking areas and toilets. Storage facilities for grain and goods for trade were built as were public baths and other buildings intended for various public functions. Urban centres were often planned near riverside or sea-ports. Accurate weights and measures were in use and ports such as Lothal were developed as export centres of early manufactured products from smelted copper and bronze. Kilns (oven for burning) for smelting copper blocks and casting tools were in existence as were metal tools such as curved or circular saws, pierced needles and most significantly, bronze drills with twisted grooves. The drill enabled the production of items with unparalleled precision for the times and could be regarded as an ancient precursor of the modern machine tool. There is also evidence of planned irrigation systems and it appears that fire and flood control measures to protect farms and villages were also in place. Artisans made use of the wheel and clay pottery was decorated in a variety of colours and designs. Cotton was grown and used to produce textiles. Urban centres in the Harappan region traded with each other as well as with counterparts in Babylon, the Persian Gulf, Egypt and possibly the Mediterranean. The span of the Harappan civilization was quite extensive, and included much of modern Sindh, Gujarat, Rajasthan, Haryana, Punjab and Western UP. But prior to its disappearance, there is also evidence of considerable social decay and disintegration. Excavations from the later phases of the Harappan civilization suggest that population pressures led to greater anarchy in building construction. Urban dwellings became smaller and settlements became more unplanned indicating a breakdown of social practices and structures that promoted urban regulations and enforced construction codes. Between 1800 and 1700 BCE, civilization on the Indus Plain vanished. The degeneration of these people is unknown. One suspected cause is a shift in the Indus River. Another is that people dammed the water along the lower portion of the Indus River without realizing the consequences such as flooding up river. Another suspected cause is a decline in rainfall. Agriculture declined and people abandoned the cities in search of food. Later, a few people of a different culture settled in some of the abandoned cities, in what archaeologists call a squatter period. Then the squatters disappeared. Knowledge of the Mohenjo-daro and Harappa civilization died until archaeologists discovered the civilization in the mid-19th century. From complex Mohenjo-daro and Harappan towns to Delhis Qutub Minar, Indias indigenous technologies were very sophisticated. They included the design and planning of water supply, traffic flow, natural air conditioning, complex stone work, and construction engineering. In forthcoming sections, we are going to discuss in detail about the ancient Indias civilization and their contributions towards science and technology in the present world. Indians Contribution towards Mathematics In the period of 400 AD to 1200 AD, important contributions were made by scholars like Aryabhata, Brahmagupta and Bhaskara II. The decimal number system that we are using today was first recorded in Indian mathematics. Indian mathematicians made early contributions to the study of the concept of zero as a number, negative numbers, arithmetic, trigonometry and algebra formulae. Some of the areas of mathematics studied in ancient and medieval India includes Arithmetic (decimal system, negative numbers, zeros, floating point numbers, number theory, infinity, transfinite numbers, irrational numbers), Geometry (square roots, cube roots, Pythagorean triples, transformation, Pascals triangle), Algebra (quadratic equations, qubic equations and quartic/biquadratic equations), Mathematical logic (formal grammars, formal language theory, the Panini-Backus form, recursion), General mathematics (Fibonacci numbers, earliest forms of Morse code, logarithms, indices, algorithms, algorism) and Trigonometry (trigonometric functions, trigonometric series). There are some evidences showing the application of mathematics by ancient Indians. Excavations at Harappa, Mohenjo-daro and other sites of the Indus Valley Civilization have uncovered evidence of the use of practical mathematics. Those people manufactured bricks whose dimensions were in the proportion 4:2:1, considered favourable for the stability of a brick structure. They used a standardized system of weights based on few ratios like 1/20, 1/10, 1/5 and etc. with the unit weight equalling approximately 28 grams. They mass produced weights in regular geometrical shapes which included hexahedra, barrels, cones and cylinders, thereby demonstrating knowledge of basic geometry. The inhabitants of Indus civilization also tried to standardize measurement of length to a high degree of accuracy. They designed a ruler (the Mohenjo-daro ruler) whose unit of length (approximately 1.32 inches or 3.4 centimetres) was divided into ten equal parts. Bricks manufactured in ancient Mohenjo-daro often had dimensions that were integral multiples of this unit of length. Indians Contribution towards Constructions Field The Indus-Sarasvati (Harappan) Civilization was the worlds first to build planned towns with underground drainage, civil sanitation, hydraulic engineering, and air-cooling architecture. Weights and measurements were standardized and oven-baked bricks were invented in India using these guidelines. There are many pioneering (first to explore new ideas/method) items of civil engineering such as drainage systems for water (open and closed), irrigation (water supply) systems, river dams, water storage tanks carved out of rock, granaries with ducts and platforms, moats (wide water channel dug surrounding a place), middle-class style homes with private bathrooms and drainage and even a dockyard (place to repair ships). There is evidence of stairs for multiple-storied buildings. Many towns have separate citadels (military stronghold); strongly fortified upper and lower towns. There are separate worker quarters near copper furnaces (place to heat material at very high temperature). Indians also pioneered many engineering tools for construction, surgery, warfare, etc. This includes the hollow drill, the true saw and the needle with the hole on its pointed end. Indians Contribution through Usage of Materials Since iron can be a secondary product of copper technology, its likely to be origin from India because copper was a well-known technology in many parts of ancient India. A smelting furnace dated 800 BCE is found in Naikund (Maharashtra), India. Recent discoveries reveal that iron was known in the Ganga valley. The Indian wootz steel[1] was very popular in Persian courts for making swords. Rust-free steel was an Indian invention and remained as an Indian skill for centuries. Delhis famous iron pillar, dated 402 CE is considered a metallurgical wonder and shows a very few signs of rust. The famous Damascus steel swords were made from Indian steel imported by Europeans. The acclaimed Sheffield steel in UK was Indian crucible steel. The best brains of European science worked for decades to learn to reverse-engineer how Indians made crucible steel and in this process, modern alloy design and physical metallurgy was developed in Europe. Another important Indian contribution to metallurgy was in the isolation, distillation and use of zinc. From natural sources, zinc content in alloys such as brass can go no higher than 28 per cent. A major breakthrough in the history of metallurgy was Indias discovery of zinc distillation whereby the metal was vaporized and then condensed back into pure metal. Brass in Taxashila has been dated from third century BCE to fifth century CE. The earliest confirmed evidence of zinc smelting by distillation is Zawar. This is the earliest place for zinc smelting and production of metallic zinc by distillation process anywhere in the world. Europeans learnt it for the first time in 1743, when expertise was transferred from India. Until then, India had been exporting pure zinc for centuries on an industrial scale. At archaeological sites in Rajasthan, retorts[2] used for the distillation are found in very large numbers even today. Once zinc had become separated into a pure metal, alloys could be made with the required zinc component to provide the required properties. For instance, strength and durability increase with higher zinc component. In addition, copper alloys look like gold when the zinc component is higher than 28 per cent. Most early brass objects found in other countries had less than 10 per cent zinc component, and, therefore, these were not based on zinc distillation technology. It was in Zawar, Rajasthan, where this first became industrialized on a large scale. Zinc mines have been found in Dariba (11th century BCE), Agucha (sixth century BCE) and Zawar (fifth century BCE). These mines have pots and other manufacturing tools of these dates, but the mining could be even older. Unsurprisingly, developments in metallurgy also had their impact on artillery (large guns) production. According to A. Rahman (Science in Medieval India), by the 16th century, the heaviest guns in the world were being cast in India and a variety of weapons were being manufactured in the subcontinent. The Jaigarh cannon factory was one of Indias best and before the crucial battle of 1857, the Jaipur Rajputs laid claim to owning Asias largest cannon. Yet, none of the Rajput cannons were ever used to confront the British who succeeded in conquering the sub-continent without ever having to fight against the countrys best equipped armies, thus demonstrating that technological progress is not an end in itself. Indians Contribution through Usage of Nature Resources Many interesting findings have recently come out about the way forests and trees were managed by each village and how a careful method was applied to harvest medicines, firewood and building material in accordance with natural renewal rates. Discoveries concerning the manufacture and application of natural and artificial dyes were first implemented by Indians. Block printing and dye and other textile-dyeing techniques were popularized. The use of mordants[3] in colour-fast dyeing of textiles became known as did the knowledge of lacquers that could be applied to wood or leather. Paints that could be used on different building materials were developed and elaborate techniques were employed to prevent fading and loss of colour during the heavy monsoons. Indian farmers developed non-chemical, eco-friendly pesticides and fertilizers that have modern applications. These traditional pesticides have been recently revived in India with excellent results, replacing Union Carbides[4] products in certain markets. Crop rotation and soil technology that has been passed down for thousands of years are traditional practices which India pioneered. Historically, Indias agricultural production was large and sustained a huge population compared to other parts of the world. Surpluses (excess of production/supply) were stored for use in a drought year. But the British turned this industry into a cash cow, exporting very large amounts of grain even during food shortages. This caused tens of millions of Indians to die of starvation in the 19th century. Given the importance of fresh water in India, it is no surprise that the technologies to manage water resources were highly advanced from Harappan times onwards. For example, in Gujarat, Chandragupta built the Sudarshan Lake in late 4th century BCE, and was later repaired in 150 BCE by his grandson. Bhopals Raja Bhoj Lake, built in 1014-1053, is so massive that it shows up in satellite images. The Vijayanagar Empire built such a large lake in 14th 15th century CE that it has more construction material than the Great Wall of China. Scientists estimate there were 1.3 million man-made water lakes and ponds across India, some as large as 250 square miles. These are now being rediscovered using satellite imagery. These enabled rain water to be harvested and used for irrigation, drinking, etc. till the following years rainfall. Indians Contribution towards Medical Field Genuine cures were listed with unscientific practices without clear distinction. But during the rational period in India the emphasis on the scientific method led to a much greater level of accuracy with respect to the efficacy of different medicines and medical procedures. The more accurately the Indian medical practitioner was able to observe reality, understand bodily functions and test the efficacy of popular medical techniques, the more successful were the prescribed cures. Dissection of corpses and careful monitoring of different diseases was an important component in the study and practice of medicine. With greater success in treatment came greater confidence and allowed medical practitioners to conduct surgical procedures using a variety of surgical tools though its unsophisticated in comparison to modern surgical equipment. Procedures for inducing unconsciousness or numbing body parts that were to be operated on were required and developed. Tools for excision, incision, puncturing, probing, organ or part extraction, fluid drainage, bloodletting, suturing and cauterization were developed. Various types of bandages and ointments were used as were basic procedures for ensuring cleanliness and limiting contamination. The caesarian section was known, bone-setting reached a high degree of skill, and plastic surgery developed far beyond anything known elsewhere at the time. Indian surgeons also became proficient at the repair of noses, ears and lips lost or injured in battle or by judicially mandated mutilation. Traditional cataract surgery was performed with a special tool called the Jabamukhi Salaka, a curved needle used to loosen the lens and push the cataract out of the field of vision. Brahmanic hospitals were established in what is now Sri Lanka as early as 431 BCE. Ashoka also established a chain of hospitals throughout the Mauryan empire by 230 BCE. While all ancient societies cherished and admired the skills of the medical practitioner, it was the more determined adoption of the scientific approach that enabled Indian medicine to make a quantum leap over the older medical systems of the time. Progress in medicine also led to developments in chemistry and chemical technologies. The manufacture of alkaline substances, medicinal powders, ointments and liquids was systematized, as were chemical processes relating to the manufacture of glass. Advances in food processing (such as manufacture of sugar, condiments and edible oils) took place as did the manufacture of personal hygiene products and beauty aids (such as shampoos, deodorizers, perfumes and cosmetics). Indians Contribution towards Shipping, Trading, Geography and Astronomy Shipbuilding was one of Indias major export industries until the British destroy it and officially prohibited it. Middle Age Arab sailors purchased their boats in India. The Portuguese also continued to get their boats from India and not Europe. Some of the worlds largest and most sophisticated ships were built in India and China. There is also extensive archival material on the Indian Ocean trade in Greek, Roman, and Southeast Asian sources. Indians are well known as traders of items like diamond, brass ornaments, gun powders, metal made swords, iron made indigo dye, copper, bronze, wootz steel, textiles, etc. Archaeologists have found geometric compasses which linear scales made of ivory. The compass and other navigation tools were already in use in the Indian Ocean long before Europe. Using their expertise in the science of seafaring, Indians participated in the earliest-known ocean-based trading system. Few people know that an Indian naval pilot, named Kanha, was hired by Vasco da Gama to captain his ships and take him to India. Deep-sea shipping had existed in India as Indian ships had been sailing to islands such as the Andamans, Lakshdweep and Maldives around 2,000 years ago. Kautilya (sacred scripture) which describes the times that are good and bad for seafaring was used as guidance. Astronomy is one area which has fascinated all mankind from the beginnings of history. The first textual mention of astronomical concepts comes from the Vedas (religious literature of India). In India, the first references to astronomy are to be found in the Rig Veda which is dated around 2000 B.C. Vedic Aryans in fact deified (worshipped) the Sun, Stars and Comets. Indians also prepared lunar calendars which were based on lunar cycle. This type of calendar (lunar calendar) is still in use today. According to Sarma (2008): One finds in the Rigveda, intelligent speculations about the genesis (origin) of the universe from nonexistence (non-real), the configuration of the universe, the spherical self-supporting earth, and the year of 360 days divided into 12 equal parts of 30 days each with a periodical intercalary (in leap years) month. Famous mathematician and astronomer, Aryabhata gave some great calculation regarding space that is almost correct. He presented his theory of heliostat, which means that planets revolve around the sun. This theory was presented about a millennium before than the theory presented by Galileo. In 20th century, world famous S Chandrashekhar presented his theory regarding black holes. References [1] http://en.wikipedia.org/wiki/Indus_valley_civilization [2] http://en.wikipedia.org/wiki/History_of_Indian_science_and_technology [3] Aspects of Ancient Indian Technology H.C. Bhardwaj [4] An Encyclopaedia of Indian Archaeology edited by A.Ghosh Volume I [5] http://yomi.mobi/egate/History_of_Indian_science_and_technology/73/a [6] http://dont-forget-your-passport.blogspot.com/2009/12/ancient-indias-contribution-to-science.html [7] http://members.tripod.com/~INDIA_RESOURCE/technology.htm [8] http://www.indianchild.com/harappa.htm [9] http://www.archaeolink.com/ancient_indus%20and%20indian%20civilizations_ancient_india.htm [10] http://en.wikipedia.org/wiki/List_of_Indian_inventions [1] an exceptional grade of iron ore steel first made in southern and south central India and Sri Lanka perhaps as early as 300 BC [2] a container used in distilling liquids [3] combines with dye and fixes it in material [4] one of the oldest chemical and polymer companies in the United States

Nutsedge: Weedy Pest or Crop of the Future? :: Botany

Nutsedge: Weedy Pest or Crop of the Future? Yellow nutsedge (Cyperus esculentus L.) is an invasive weed in the United States. It is often regarded as a useless pest to home gardeners as well as commercial growers. Along with being a useless weed it is difficult to control. Several commercial herbicides have been labeled for use exclusively on yellow nutsedge and are available at local retailers. This, of course, indicates much research has gone into the development of chemicals to eradicate it. In a country that spends much of it's time and money on programs focusing on the advancement of crop production has the yellow nutsedge been labeled unfairly? Could the U.S. find use for Cyperus esculentus L.? A look into it's past and present might reveal a profitable future. Cyperus esculentus is in the order Commelinales and the family Cyperaceae. Cyperus esculentus can be distinguished from other species of New World nutsedge by its persistent linear brown spiklets that have closely appressed overlapping scales. This perennial plant is self-incompatible. The stem of yellow nutsedge is triangularand has a light green-yellow color. Rhizomes that terminate in tubers are the main means of reproduction, although it does produce viable seed. It is interesting to note that the name Linnaeus chose for this sedge, esculentus, means edible in latin (6). The two varieties of interest to us are Cyperus esculentus var. esculentus (weedy) and Cyperus esculentus var. sativus (cultivated). Most literature uses the name Cyperus esculentus for both the weedy and the useful sedge. The weedy variety esculentus produces many seeds although the cultivated variety sativus produces few. Yellow nutsedge (weedy) has been reported to produce 605 million seeds per hectare in Massachusetts (4). Both reproduce vegetatively in great numbers. Research indicates that a single nutsedge tuber can produce about 1900 plants and 7000 tubers in one yearly (8). The weedy nutsedge was introduced to the Dutch Netherlands in the late 1970's concealed in Gladiolus and it was so invasive that in 1984 a restriction was implemented by the government. This regulation prohibits the harvest of any root crop in a field that is infested with the yellow nutsedge (3). Cyperus esculentus var. esculentus and Cyperus esculentus var. sativus are closely related according to Moshe Negbi (6). The color of the tubers appears to be one unusual character. Variety sativus has a grey-orange color and variety esculentus has a grayed brown color according to the Royal Horticultural Society Colour Chart (3).