Hydroponics
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For the EP by 311, see Hydroponic (EP).
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Agriculture and Agronomy portal v t e NASA researcher checking hydroponic onions with Bibb lettuce to his left and radishes to the right Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite, gravel, mineral wool, expanded clay pebbles or coconut husk. Researchers discovered in the 18th century that plants absorb essential mineral nutrients as inorganic ions in water. In natural conditions, soil acts as a mineral nutrient reservoir but the soil itself is not essential to plant growth. When the mineral nutrients in the soil dissolve in water, plant roots are able to absorb them. When the required mineral nutrients are introduced into a plant's water supply artificially, soil is no longer required for the plant to thrive. Almost any terrestrial plant will grow with hydroponics. Hydroponics is also a standard technique in biology research and teaching.
History
Further information: Historical hydroculture The earliest published work on growing terrestrial plants without soil was the 1627 book Sylva Sylvarum by Francis Bacon, printed a year after his death. Water culture became a popular research technique after that. In 1699, John Woodward published his water culture experiments with spearmint. He found that plants in less-pure water sources grew better than plants in distilled water. By 1842, a list of nine elements believed to be essential to plant growth had been compiled, and the discoveries of the German botanists Julius von Sachs and Wilhelm Knop, in the years 1859-65, resulted in a development of the technique of soilless cultivation.[1] Growth of terrestrial plants without soil in mineral nutrient solutions was called solution culture. It quickly became a standard research and teaching technique and is still widely used today. Solution culture is now considered a type of hydroponics where there is no inert medium. In 1929, William Frederick Gericke of the University of California at Berkeley began publicly promoting that solution culture be used for agricultural crop production.[2][3] He first termed it aquaculture but later found that aquaculture was already applied to culture of aquatic organisms. Gericke created a sensation by growing tomato vines twenty-five feet high in his back yard in mineral nutrient solutions rather than soil.[4] By analogy with the ancient Greek term for agriculture, geoponics, the science of cultivating the earth, Gericke coined the term hydroponics in 1937 (although he asserts that the term was suggested by W. A. Setchell, of the University of California) for the culture of plants in water (from the Greek hydro-,
of oxygen. The plants in hydroponics get their oxygen from the air pump which delivers air to the reservoir, thus oxygen is constantly passed through the water and the plants would get more oxygen than when in soil, thus they would be able to utilize this more oxygen effectively. The hydroponics system requires the purchase of an air pump and air stone, which require electricity to run. It also requires hydroponic liquid nutrient solution, and the constant change of water and reproducing the same…
Hydroponics in Everyday By Kristen Kratzer Midd-West High School Landscaping 11/06/14 Mr. Bittner The definition of hydroponics is the process of growing plants in sand, gravel or liquid with added nutrients but without soil (Destroying the Myths). I don’t know that it could be put any simpler than that. I am talking today to explain how this process works, how it is used around the world in landscaping and as a sustainable food source and also how you can use it in your life…
Introduction to Hydroponics and Controlled Environment Agriculture by Patricia A. Rorabaugh, Ph.D. University of Arizona Controlled Environment Agriculture Center 1951 E. Roger Road Tucson, AZ 85719 Revised December, 2012 TABLE OF CONTENTS CHAPTER 1: Controlled Environment Agriculture and Hydroponics: Past, Present and Future The Plant How to grow greenhouse crops Plant Protection: Insects and Diseases Basic Principals of Hydroponics Transplant Production Pollination, Fertilization and Bee…
INTRODUCTION What is Hydroponics? Derived from the Latin word meaning ‘working water’, hydroponics is the process of growing plants with added nutrients and water, and without soil. Alternately, plants receive the nutrients through its water supply, which substitutes for the soil’s absence, as a key role of the soil is to help the plant grow, stay healthy and alive with the nutrients it provides. Nutrients are provided by the use of mineral salts, which can be either naturally derived or manmade…
GAC023 AE01 Environmental Issue Investigation Water problems in Japan Student Name: Coco Luo Student ID: 14409 Teacher: Mr. Sparks Due Date: Word Count: 1467 Table of Contents Summary…………………………………………………………………………………………1 Introduction………………………………………………………………………………………1 Methodology……………………………………………………………………………………..2 Findings…………………………………………………………………………………………..2 Discussion………………………………………………………………………………………..5 Conclusions and Recommendations……………………………………………………………..6 References…………………………………………………………………………………………
The Cannabis Wellness Center | Industry and Competitor Analysis | * Introduction The Cannabis Wellness Center will provide services/products to customers who are medically certified. To qualify as a medically certified candidate you must have your physician certify that you have an eligible condition. Your physician will certify you if you suffer from severe chronic pain, painful peripheral neuropathy, intractable nausea/vomiting, severe anorexia/cachexia, hepatitis C infection currently…
provides foods, building temperature control, hydrological benefits, architectural enhancements, corridors and habitats for wildlife such as wildlife walls, bat houses, bird nesting areas, bee hives, etc. Usually these roofs are done using green roof, hydroponics, aeroponics, air-dynaponics systems or container gardens. Aside from using already present space on the roof itself additional platforms can be created between high-rise buildings, that are similar to a bridge, which is why they are called “aero-bridges”…
UNSW Future Problem Solving Program Team Answer Booklet Topic MEGACITIES______________ Team Name A+ Plus___________________ Tutorial Group ___BA1___________________ Date _15 /_06_ /_2014 Declaration: This work submitted for evaluation complies with UNSW Foundation Year Program Rules of Assessment. We acknowledge that this task requires evidence of effective team work and accordingly agree to accept the team mark for this task as a component of our individual assessment mark…
culture. He stepped into the spaciously air-conditioned spaceport, and was greeted by a bright cheerful couple with blond hair and blue eyes. All his life, Mark had lived on the dreary hunk of space rock called Mars. Artificial gravity, water recycling, and hydroponic technology had made space colonization possible. Mark’s parents viewed Earth as an overcrowded wasteland, contrary to Mark’s beliefs. Life on Mars was very dull and boring. Since his parents had long been successful in the ore mining industry…
research of the usage and benefits of an autonomous building, which is designed to be operated independently from infrastructural support services such as the electricity power grid, heating and cooling system, food production techniques and municipal water system. Due to the increasing living cost and worsening environment, it is a trend to develop and promote this type of building for energy saving and climate protection. This report also analyzes the functions and application feasibility of the autonomous…