La Importancia De La Ciencia En La Medicina

** Century, especially with the advent of the tractor, the demanding tasks of sowing, harvesting and threshing can be made quickly and at a previously unimaginable scale. According to the International Academy of Engineering US, agricultural mechanization is one of the 20 greatest engineering achievements of the century **. ** Early in the century, US a farmer was needed to feed 2-5 people, while today, thanks to technology, agrochemicals and current varieties, a farmer can feed 130 people. The cost of this productivity is a high energy consumption, usually of fossil fuels.

 The radio broadcasting and television (media), as well as information technology, are of great help in facilitating weather reports, market research, etc.

 In addition to food for humans and animals, they are increasingly produced other things such as flowers, ornamental plants, wood, fertilizers, skins, leather, chemicals (ethanol, plastics, sugar, starch), fiber (cotton, hemp, flax ), fuel (biodiesel), biopharmaceuticals, and both legal and illegal (snuff, marijuana, opium, cocaine) drug. There are also created genetically engineered plants that produce specialty chemicals.

 Genetic manipulation, better management of soil nutrients and improved seeds control have greatly increased yields per unit area, to change these seeds have become more sensitive to pests and diseases, which implies a need the latter increased by the farmer; Proof of this is the resurgence of old varieties, very resistant to diseases and pests, for its hardiness. At the same time, mechanization has reduced labor requirement. Crops are generally lower in poorer countries, lacking the capital, technology and scientific knowledge.

 Modern agriculture relies heavily on technology and the physical and biological sciences. Irrigation, drainage, conservation and health, which are vital for successful agriculture, require specialized knowledge of agricultural engineers. Agricultural chemistry, however, deals with the application of fertilizers, insecticides and fungicides, repairing floors, analysis of agricultural products, etc.

 Seed varieties have been improved to the point to germinate faster and shorter fit stations in different climates. Current seeds can resist pesticides able to exterminate all green plants. Hydroponics, a method of cultivating land without using chemical nutrient solutions can help meet the growing need of production as the world population increases.

 Other modern techniques that have contributed to the development of agriculture are packaging, processing and marketing. Thus, the processing of foods, such as quick freezing and dehydration have opened new horizons for the marketing of products and increased potential markets.

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