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Composted Municipal Refuse: Its Effects on Carbon Dioxide, Nitrate, Fungi, and Bacteria in Arredondo Fine Sand 1
Author(s) -
Rothwell D. F.,
Hortenstine C. C.
Publication year - 1969
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1969.00021962006100060003x
Subject(s) - compost , manure , nitrification , cow dung , garbage , agronomy , chicken manure , sewage sludge , environmental science , sewage , chemistry , fertilizer , waste management , nitrogen , biology , environmental engineering , organic chemistry , engineering
Effects of high levels of garbage compost, chicken manure, cow manure, and sewage sludge on microbial activity in Arredondo fine sand were evaluated by determination of relative numbers of bacteria and fungi, CO 2 evolution, and nitrification. With each increase in garbage compost, relative fungal numbers increased at each measurement period; bacterial numbers increased, then decreased rapidly by the 4th or 6th day. The amount of cumulative CO 2 ‐C evolved by these materials when mixed with soil was: cow manure < garbage compost < chicken manure < sewage sludge. Similar relationships were obtained when garbage compost was mixed with cow manure, chicken manure, or sewage sludge and added to soil. Nitrification decreased with increased levels of both sewage sludge and chicken manure and increased with increased levels of cow manure. However, little nitrification occurred when cow manure was mixed with equal quantities of garbage compost. Only slight nitrification occurred when the soil was amended with garbage compost.