Because of the importance of farm manures considerable attention has been paid from time to time to a study of some of the chemical and biological processes which take place during storage. Early references concerning the proper storage of manure can be found in the Roman literature notably that of Varro or of Columella. During the dark ages all agricultural investigations were dropped and were not revived until the middle of the nineteenth century. At this time the work of such investigators as Wagner, Moerker, Pfeiffer and Voelcker created a new interest in the chemical and biological processes which take place in manures when stored and when variously treated.
Proceedings of the Iowa Academy of Science
©1925 Iowa Academy of Science, Inc.
Englehorn, Alfred J.
"Observations of Some Biological Activities in Manure Composts,"
Proceedings of the Iowa Academy of Science, 32(1), 85-94.
Available at: https://scholarworks.uni.edu/pias/vol32/iss1/13