This article is about the plant and soil scientist. For the man who disappeared in Connecticut in 2013, see Disappearance of Robert Hoagland.
Dennis Robert Hoagland
Born
April 2, 1884
Golden, Colorado, United States
Died
September 5, 1949 (1949-09-06) (aged 65)
Oakland, California, United States
Alma mater
Stanford University (Bachelor) University of Wisconsin-Madison (Master)
Known for
Hoagland solution, Active transport, Nitella, Plant nutrition, Soil pH, Soil solution, Micronutrients, Water culture, Hoagland and Knop medium
Awards
Dennis R. Hoagland Award (1985) Newcomb Cleveland Prize (1940) Stephen Hales Prize (1929)
Scientific career
Fields
Plant physiology Soil chemistry
Institutions
University of California, Berkeley
Doctoral students
Daniel I. Arnon
Dennis Robert Hoagland (April 2, 1884 – September 5, 1949) was an American chemist and plant and soil scientist who pioneered work in plant nutrition, soil chemistry, agricultural chemistry, biochemistry, and physiology. He was Professor of Plant Nutrition at the University of California at Berkeley from 1927 until his death in 1949.
Dennis Hoagland is commonly known for discovering the active transport of electrolytes in plant cells, using innovative model systems under controlled experimental conditions, such as solution culture.
Hoagland was able to show that various plant diseases are caused by a lack of trace elements such as zinc and established their importance for plant nutrition and development.
He pioneered research into the interactions between plant and soil by establishing soil pH and the importance of soil solution, temperature and light for plant growth.
Hoagland and his associates formulated an artificial, complete inorganic nutrient medium, universally known as Hoagland solution, that continues to be used worldwide for culturing plants hydroponically.[1]
^Forde, B. G. (1 September 2004). "Focus on Plant Nutrition". Plant Physiology. 136 (1): 2437. doi:10.1104/pp.104.900120. PMC 523309. PMID 15375198.
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large variety of plant species. The solution described by DennisHoagland in 1933, known as Hoagland solution (0), has been modified several times, mainly...
four years later, where he worked as postdoctoral researcher with DennisRobertHoagland from 1928 to 1929. In 1934 he returned to England as a reader in...
under controlled laboratory conditions. This approach forced by DennisRobertHoagland led to innovative model systems (e.g., green algae Nitella) and...
possibility of active transport of substances across membranes. In 1926, DennisRobertHoagland investigated the ability of plants to absorb salts against a concentration...
of an iron salt, is still commonly used in plant biology today. DennisRobertHoagland and Daniel Israel Arnon proposed that Sachs' solution (1860), Knop's...
on 1 October 2022. Al Hoagland was born in Berkeley, California, on September 13, 1926. His parents were DennisRobertHoagland (1884–1949), and Jessie...
osmosis by Frenchman Henri Dutrochet (1776–1847). The American DennisRobertHoagland (1884–1949) discovered the dependence of nutrient absorption and...
chemistry, but as an instructor in agricultural chemistry, where DennisRobertHoagland enrolled as a master's student in 1912/1913. In 1907 he married...
later famous botanists. His scientific statements also influenced DennisRobertHoagland and Daniel Israel Arnon, who followed one of Sachs' principles in...
Tony Hoagland David Copperfield – Charles Dickens (twice) Books read: David Copperfield – Charles Dickens Books bought: Donkey Gospel – Tony Hoagland I Never...
Tanner III (18 May 1921 – 6 November 1976), known by the pseudonym Patrick Dennis, was an American author. His novel Auntie Mame: An irreverent escapade (1955)...
Sarah Lucia Hoagland (born 4 June 1945 in Denver, Colorado) is the Bernard Brommel Distinguished Research Professor and Professor Emerita of Philosophy...
Peggy Goodenow Lemaux is an American plant biologist. She won a 2003 Dennis R. Hoagland Award. She graduated from Miami University, and University of Michigan...
(optional) Kinetin 0.04-10 mg/l (optional) Hoagland solution Long Ashton Nutrient Solution Trigiano, Robert N. & Gray, Dennis J. (2010). Plant Tissue Culture,Development...
Clements, followed by a PhD at the University of California under DennisRobertHoagland in 1943. Machlis's early career was spent on war-related projects...
Robert Henry Allerton (March 20, 1873 – December 22, 1964), born in Chicago, Illinois, United States, was the son and heir of First National Bank of Chicago...
Robert Sloan Basker, commonly known as Bob Basker (born Solomon Basker; September 30, 1918, in East Harlem, New York City – April 6, 2001) was a civil...
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