lec32 (dragged) 1

lec32 (dragged) 1 - a means for the inexpensive production...

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2 Lecture 32 and the development of trickle irrigation in the 1970s. Trickle irrigation, is a water delivery system in which water is delivered to individual plants through narrow plastic tubes containing an emitter that adjusts for differences in pressure. Trickle irrigation was fi rst used in greenhouses (where it was known as theChapin system) and was adapted for fi eld use in Israel. It was developed for arid areas to conserve moisture and to avoid problems of salt buildup. It proved to be adapted to temperate climates and has had enormous bene fi ts to both fruit and vegetable production. Information Technology The development of information technology traces to the beginning of writing 5000 years ago from cuneiform to hieroglyphics to the development of the alphabet. Advances in antiquity included the devel- opment of papyrus, sheepskin, and paper to receive written information, and the concept of the scroll and book, as a form of information storage. The invention of the printing press by Gutenberg (1453) generated
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Unformatted text preview: a means for the inexpensive production and storage of information via the printed book. In the 19th century the long distance transmission of information was made possible with the development of the telegraph (Samuel Morse, 1844), the telephone (Alexander Graham Bell (1876), and the radio (Guglielmo Marconi 1901). The explosion of information technology in the 20th century involves the computer, (although devices to calculate such as the abacus, and machines such as Babbage’s Difference Engine, are much earlier), and f nally the internet and world wide web, satellite imagery, email, and global positioning system (GPS) based on satellites. All in F uence agriculture. A new development called precision agriculture uses sensors and information technology permitting machines to adjust for individual crop demands. Finally, the development of statistical theory, has had a large in F uence on agricultural research including plant breeding....
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