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In 1892 Loew observed that both calcium and magnesium can be toxic to plants when there is an excess of one and a deficiency of the other, thus suggesting there may be an optimal Ca:Mg ratio. In 1901, with D.W. May, he did further testing and suggested an ideal Ca:Mg ratio of 5 to 4, though for
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before settling back in Munich in 1910, where he was employed as private contractor working with soil bacteriological problems. In 1913 he accepted the position of professor of chemical plant physiology at the
University of Munich.
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and enzyme theory. Decades before the work of
Buchner, Loew was convinced that the activity of yeasts was not a function of the living cell, but of the enzymes produced by the yeasts. Loew invented a method to produce
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until 1900. While in
Washington, he discovered the enzyme catalase and carried out investigations on the influence of calcium and magnesium on plant development. He worked for a short time in
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Kopittke, Peter M.; Menzies, Neal W. (2007). "A Review of the Use of the Basic Cation
Saturation Ratio and the "Ideal" Soil".
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several species maximum growth was obtained across a wide range of ratios. This work was key to identifying the principle of
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Loew, O. 1892. Uber die physiolgischen funkton der kalzium- und magnesia-salze in planzen organisms. Flora 75:368–394.
269:(BCSR), which is a method of interpreting soil test results that is now widely used in sustainable agriculture.
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Catalase: A New Enzym of
General Occurrence, with special reference to the tobacco plant
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Loew was a versatile researcher and produced several significant technical papers on
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Der
Kalkbedarf von Mensch und Tier. Zur chemischen Physiologie des Kalks
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347:(1904, par Oscar Loew avec la collaboration de M.-Emm. Pozzi-Escot)
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by oxidation with atmospheric oxygen and metallic copper as a
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there. He trained many notable
Japanese chemists, including
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On the expiration of his contract in 1898, Loew moved to
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and participated in four expeditions to the southwestern
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Foreign advisors to the government in Meiji-period Japan
133:, where his father was a pharmacist. He studied at the
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to oxygen and water. His work in this area focused on
276:in 1941. His grave is at the municipal cemetery of
420:"A New Enzyme of General Occurrence in Organismis"
345:L'Énergie Chimique Primaire de la Matière Vivante
333:The Relation of Lime and Magnesia to Plant Growth
327:Physiological Studies on Connecticut Leaf Tobacco
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201:. While in Japan, he researched the effects of
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321:Curing and Fermentation of Cigar Leaf Tobacco
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315:The Physiological Role of Mineral Nutrients
169:in 1886. In 1893, he was recruited by the
103:Oskar Loew Memorial Tablet in Marktredwitz
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553:Academic staff of the University of Tokyo
309:Die Chemische Energie der Lebenden Zellen
290:Ein natĂĽrliches System der Gift-Wirkungen
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470:Soil Science Society of America Journal
382:Oesper, Ralph E. (1930). "Oscar Loew".
298:University and State Library DĂĽsseldorf
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214:United States Department of Agriculture
110:(2 April 1844 – 26 January 1941) was a
16:German agricultural chemist (1844–1941)
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292:. Wolff & LĂĽneburg, MĂĽnchen 1893
165:. Loew became associate professor at
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351:Studies on Acid Soils of Porto Rico
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363:Das Calcium im Leben der Haustiere
189:between 1893 and 1907, succeeding
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245:' for the enzyme that decomposes
528:People from Wunsiedel (district)
303:The Energy of Living Protoplasm
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384:Journal of Chemical Education
161:, where he collaborated with
558:19th-century German chemists
533:20th-century German chemists
267:Base Cation Saturation Ratio
153:in 1882 before returning to
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538:German expatriates in Japan
311:(1899; second edition 1906)
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548:Foreign educators in Japan
444:10.1126/science.11.279.701
212:, where he worked in the
187:Tokyo Imperial University
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259:cation exchange capacity
241:. He proposed the name '
147:City College of New York
137:under the noted chemist
408:, with photo of Dr Loew
490:10.2136/sssaj2006.0186
195:agricultural chemistry
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265:'s later work on the
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284:Partial bibliography
135:University of Munich
115:agricultural chemist
482:2007SSASJ..71..259K
436:1900Sci....11..701L
396:1930JChEd...7..314O
181:, and travelled to
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418:Loew, O. (1900).
404:10.1021/ed007p314
278:Lichterfelde West
261:and facilitating
247:hydrogen peroxide
226:organic chemistry
205:on acidic soils.
167:Munich University
139:Justus von Liebig
125:Loew was born in
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430:(279): 701–702.
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263:William Albrecht
210:Washington, D.C.
193:as professor of
171:Meiji government
143:plant physiology
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294:Digital edition
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253:leaf extracts.
179:foreign advisor
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66:26 January 1941
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127:Marktredwitz
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68:(1941-01-26)
52:Marktredwitz
48:2 April 1844
523:1941 deaths
518:1844 births
280:in Berlin.
218:Puerto Rico
163:Carl Nägeli
82:Nationality
512:Categories
476:(2): 259.
390:(2): 314.
108:Oscar Loew
93:agronomist
90:Occupation
44:1844-04-02
23:Oscar Loew
121:Biography
76:, Germany
452:17751716
243:catalase
239:catalyst
235:methanol
478:Bibcode
432:Bibcode
424:Science
392:Bibcode
296:by the
251:tobacco
159:Germany
145:at the
131:Bavaria
56:Bavaria
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365:, 1939
359:(1924)
353:(1913)
341:(1901)
335:(1901)
329:(1900)
323:(1899)
317:(1899)
305:(1896)
274:Berlin
155:Munich
112:German
85:German
74:Berlin
370:Notes
233:from
183:Tokyo
177:as a
175:Japan
448:PMID
203:lime
63:Died
38:Born
486:doi
440:doi
400:doi
173:of
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