|
History Of Agricultural Science
The history of agricultural science is a sub-field of the history of agriculture which looks at the scientific advancement of techniques and understanding of agriculture. Early study of organic production in botanical gardens was continued in with agricultural experiment stations in several countries. Fertilizer is a major contribution to agriculture history increasing the fertility of the soil and minimizing nutrient loss. Scientific study of fertilizer was advanced significantly in 1840 with the publication ''Die organische Chemie in ihrer Anwendung auf Agrikulturchemie und Physiologie'' (Organic Chemistry in Its Applications to Agriculture and Physiology) by Justus von Liebig. One of Liebig's advances in agricultural science was the discovery of nitrogen as an essential plant nutrient. Fertilizer The first method of soil nourishment utilized compost. Composting used rotten organic materials to replenish the soil of its nutrients and dates back to tenth and twelfth century Ara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luigi Alamanni, La Coltivazione
is a fictional character featured in video games and related media released by Nintendo. Created by Japanese video game designer Shigeru Miyamoto, Luigi is portrayed as the younger fraternal twin brother and sidekick of Mario, Nintendo's mascot. Luigi appears in many games throughout the Mario (franchise), ''Mario'' franchise, oftentimes accompanying his brother. Luigi first appeared in the 1983 Game & Watch game ''List of LCD games featuring Mario#Mario Bros., Mario Bros.'', where he is the character controlled by the second player. He would retain this role in many future games, including ''Mario Bros.'', ''Super Mario Bros.'', ''Super Mario Bros. 3'', ''Super Mario World'', among other titles. He was first available as a primary character in ''Super Mario Bros. 2''. In more recent appearances, Luigi's role became increasingly restricted to spinoffs, such as the ''Mario Party'' and ''Mario Kart'' series; however, he has been featured in a starring role in ''Nelsonic Industr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limiting Factor
A limiting factor is a variable of a system that causes a noticeable change in output or another measure of a type of system. The limiting factor is in a pyramid shape of organisms going up from the producers to consumers and so on. A factor not limiting over a certain domain of starting conditions may yet be limiting over another domain of starting conditions, including that of the factor. Overview The identification of a factor as limiting is possible only in distinction to one or more other factors that are non-limiting. Disciplines differ in their use of the term as to whether they allow the simultaneous existence of more than one limiting factor which (may then be called "co-limiting"), but they all require the existence of at least one non-limiting factor when the terms are used. There are several different possible scenarios of limitation when more than one factor is present. The first scenario, called ''single limitation'' occurs when only one factor, the one with maximum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugo De Vries
Hugo Marie de Vries () (16 February 1848 – 21 May 1935) was a Dutch botanist and one of the first geneticists. He is known chiefly for suggesting the concept of genes, rediscovering the laws of heredity in the 1890s while apparently unaware of Gregor Mendel's work, for introducing the term "mutation", and for developing a mutation theory of evolution. Early life De Vries was born in 1848, the eldest son of Gerrit de Vries (1818–1900), a lawyer and deacon in the Mennonite congregation in Haarlem and later Prime Minister of the Netherlands from 1872 until 1874, and Maria Everardina Reuvens (1823–1914), daughter of a professor in archaeology at Leiden University. His father became a member of the Dutch Council of State in 1862 and moved his family over to The Hague. From an early age Hugo showed much interest in botany, winning several prizes for his herbariums while attending gymnasium in Haarlem and The Hague. In 1866 he enrolled at the Leiden University to major in botan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mendelian Inheritance
Mendelian inheritance (also known as Mendelism) is a type of biological inheritance following the principles originally proposed by Gregor Mendel in 1865 and 1866, re-discovered in 1900 by Hugo de Vries and Carl Correns, and later popularized by William Bateson. These principles were initially controversial. When Mendel's theories were integrated with the Boveri–Sutton chromosome theory of inheritance by Thomas Hunt Morgan in 1915, they became the core of classical genetics. Ronald Fisher combined these ideas with the theory of natural selection in his 1930 book ''The Genetical Theory of Natural Selection'', putting evolution onto a mathematical footing and forming the basis for population genetics within the modern evolutionary synthesis. History The principles of Mendelian inheritance were named for and first derived by Gregor Johann Mendel, a nineteenth-century Moravian monk who formulated his ideas after conducting simple hybridisation experiments with pea plants (' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregor Mendel
Gregor Johann Mendel, Augustinians, OSA (; cs, Řehoř Jan Mendel; 20 July 1822 – 6 January 1884) was a biologist, meteorologist, mathematician, Augustinians, Augustinian friar and abbot of St Thomas's Abbey, Brno, St. Thomas' Abbey in Brünn (''Brno''), Margraviate of Moravia. Mendel was born in a Sudeten Germans, German-speaking family in the Austrian Silesia, Silesian part of the Austrian Empire (today's Czech Republic) and gained posthumous recognition as the founder of the modern science of genetics. Though farmers had known for millennia that crossbreeding of animals and plants could favor certain desirable trait (biological), traits, Mendel's pea plant experiments conducted between 1856 and 1863 established many of the rules of biological inheritance, heredity, now referred to as the laws of Mendelian inheritance. Mendel worked with seven characteristics of pea plants: plant height, pod shape and color, seed shape and color, and flower position and color. Taking seed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural Science
Agricultural science (or agriscience for short) is a broad multidisciplinary field of biology that encompasses the parts of exact, natural, economic and social sciences that are used in the practice and understanding of agriculture. Professionals of the agricultural science are called agricultural scientists or agriculturists. History In the 18th century, Johann Friedrich Mayer conducted experiments on the use of gypsum (hydrated calcium sulphate) as a fertilizer.John Armstrong, Jesse Buel. ''A Treatise on Agriculture, The Present Condition of the Art Abroad and at Home, and the Theory and Practice of Husbandry. To which is Added, a Dissertation on the Kitchen and Garden.'' 1840. p. 45. In 1843, John Bennet Lawes and Joseph Henry Gilbert began a set of long-term field experiments at Rothamsted Research in England, some of which are still running as of 2018. In the United States, a scientific revolution in agriculture began with the Hatch Act of 1887, which used the term " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackwell Publishing
Wiley-Blackwell is an international scientific, technical, medical, and scholarly publishing business of John Wiley & Sons. It was formed by the merger of John Wiley & Sons Global Scientific, Technical, and Medical business with Blackwell Publishing in 2007.About Wiley-Blackwell John Wiley & Sons, Inc. Wiley-Blackwell is now an imprint that publishes a diverse range of academic and professional fields, including , , , |
Smith–Hughes Act
The Smith–Hughes National Vocational Education Act of 1917 was an act of the United States Congress that promoted vocational education in "agriculture, trades and industry, and homemaking," and provided federal funds for this purpose. As such, it is the basis both for the promotion of vocational education, and for its isolation from the rest of the curriculum in most school settings. The act is an expansion and modification of the 1914 Smith–Lever Act and both were based largely on a report and recommendation from Charles Allen Prosser's ''Report of the National Commission on Aid to Vocational Education''. Woodlawn High School (Woodlawn, Virginia) became the first public secondary school in the United States to offer agricultural education classes under the Smith–Hughes Act. Of all the vocational subjects mentioned, home economics is the only vocational subject that the act recognized for girls. Separate state boards for vocational education Several specific elements of the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hatch Act Of 1887
The Hatch Act of 1887 (ch. 314, , enacted 1887-03-02, et seq.) gave federal funds, initially of $15,000 each, to state land-grant colleges in order to create a series of agricultural experiment stations, as well as pass along new information, especially in the areas of soil minerals and plant growth. The bill was named for Congressman William Hatch, who chaired the House Committee of Agriculture at the time the bill was introduced. State agricultural stations created under this act were usually connected with those land-grant state colleges and universities founded under the Morrill Act of 1862, with few exceptions. Many stations founded under the Hatch Act later became the foundations for state cooperative extension services under the Smith–Lever Act of 1914. Congress amended the act in 1955 to add a formula that uses rural and farm population factors to allocate the annual appropriation for agricultural experiment stations among the states. Under the 2002 farm bill The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haber Process
The Haber process, also called the Haber–Bosch process, is an artificial nitrogen fixation process and is the main industrial procedure for the production of ammonia today. It is named after its inventors, the German chemists Fritz Haber and Carl Bosch, who developed it in the first decade of the 20th century. The process converts atmospheric nitrogen (N2) to ammonia (NH3) by a reaction with hydrogen (H2) using a metal catalyst under high temperatures and pressures: : \ce \quad \Delta H^\circ = -91.8~\text Though this reaction is exothermic (i.e. it releases energy, albeit not very much), it results in a decrease in entropy, which is the central reason why it is very challenging to carry out. Before the development of the Haber process, it had been difficult to produce ammonia on an industrial scale, with early methods, such as the Birkeland–Eyde process and the Frank–Caro process, all highly inefficient. During World War I, the Haber process provided Germany with a so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yale University Press
Yale University Press is the university press of Yale University. It was founded in 1908 by George Parmly Day, and became an official department of Yale University in 1961, but it remains financially and operationally autonomous. , Yale University Press publishes approximately 300 new hardcover and 150 new paperback books annually and has a backlist of about 5,000 books in print. Its books have won five National Book Awards, two National Book Critics Circle Awards and eight Pulitzer Prizes. The press maintains offices in New Haven, Connecticut and London, England. Yale is the only American university press with a full-scale publishing operation in Europe. It was a co-founder of the distributor TriLiteral LLC with MIT Press and Harvard University Press. TriLiteral was sold to LSC Communications in 2018. Series and publishing programs Yale Series of Younger Poets Since its inception in 1919, the Yale Series of Younger Poets Competition has published the first collection of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaret Rossiter
Margaret W. Rossiter (born July 1944) is an American historian of science, and Marie Underhill Noll Professor of the History of Science, at Cornell University. Rossiter coined the term Matilda effect for the systematic suppression of information about women in the history of science, and the denial of the contribution of women scientists in research, whose work is often attributed to their male colleagues. Early life and education Margaret Rossiter and her twin brother Charles were born into a military family at the end of the Second World War."Writing Women into Science" ''Writing and revising the disciplines'', Editor Jonathan Monroe, Cornell University Press, 2002, The family eventually settled in |
