John Bennet Lawes, an English entrepreneur, began to experiment on the effects of various manures on plants growing in pots in 1837, and a year or two later the experiments were extended to crops in the field.
One immediate consequence was that in 1842 he patented a manure formed by treating phosphates with sulfuric acid, and thus was the first to create the artificial manure industry.
A factory based on the process was built in Rjukan and Notodden in Norway, combined with the building of large [power] facilities. The 1910s and 1920s witnessed the rise of the Haber process and the Ostwald process.
A factory based on the process was built in Rjukan and Notodden in Norway, combined with the building of large [power] facilities. The 1910s and 1920s witnessed the rise of the Haber process and the Ostwald process.
The use of phosphate fertilizers has also increased from 9 million tonnes per year in 1960 to 40 million tonnes per year in 2000.
In the later half of the 20th century, increased use of nitrogen fertilizers (800% increase between 1961 and 2019) have been a crucial component of the increased productivity of conventional food systems (more than 30% per capita) as part of the so called "Green Revolution". Synthetic fertilizer used in agriculture has wide-reaching environmental consequences.
There was a complex scientific understanding of plant nutrition, where the role of humus and organo-mineral interactions were central, and which was in line with more recent discoveries from 1990 onwards.
The use of phosphate fertilizers has also increased from 9 million tonnes per year in 1960 to 40 million tonnes per year in 2000.
In the later half of the 20th century, increased use of nitrogen fertilizers (800% increase between 1961 and 2019) have been a crucial component of the increased productivity of conventional food systems (more than 30% per capita) as part of the so called "Green Revolution". Synthetic fertilizer used in agriculture has wide-reaching environmental consequences.
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Page generated on 2021-08-05