17 Questions
What was the ratio of straw to manure in the fermentation process in the 14th century?
5:1
During which time period was the term 'Golden Age' used to refer to advancements in crop manuring and soil enrichment?
800 B.C.-200 B.C.
Which civilization recognized the value of marl and plant ashes for enriching soil?
Roman
Which of the following was mentioned as one of the first fertilizers used in ancient times?
Fish bone
In which ancient text was the fertilization of plants with saltpeter or potassium nitrate mentioned?
Book of Luke in the Bible
What was a common practice used by ancient farmers to improve plant growth on a plot of land?
Spreading animal manure throughout the soil
Which ancient civilization recognized the value of silt deposits from flooding rivers in maintaining soil productivity?
Egyptian civilization
What type of manures have been used in Chinese agriculture for over 3,000 years?
Human and animal wastes
How was manure applied to fields in 11th-century England?
Directly to fields
What did Walter of Henley recommend as a method for preparing manure for fields in medieval England?
Spreading on barn floors for two weeks
What did ancient farmers observe about the yields on a plot of land over time that led them to improve plant growth?
The initial yields were better than subsequent years
What was the impetus for the production of granular, homogeneous NPK fertilizers in the U.S.?
Introduction of the Tennessee Valley Authority's continuous ammoniator-granulator in 1953
Which equipment was originally developed to replace the batch process of ammoniating superphosphate?
Continuous ammoniator-granulator
What was an important advance in granulated, homogeneous mixed fertilizer technology introduced by TVA in 1974?
Pipe-cross reactor
Which ancient civilization transported sewage to their vegetable gardens through a system of canals?
Greeks
In which Asian countries is it common practice to collect slurries of human and animal wastes for use on cropland?
China, Japan, Korea, Vietnam
When did the U.S. liquid mixed fertilizer sector have a modest beginning?
Between 1923 and 1928
Test your knowledge on the history of fertilizer use, from ancient Greek and Roman practices to the Golden Age of manuring. Learn about the methods and materials used for enhancing crop production in early agricultural societies.
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