Kirchmann, Holger
- Institutionen för markvetenskap, Sveriges lantbruksuniversitet
Sammanfattning
Fresh cattle, pig and poultry excreta as well as aerobically and anaerobically decomposed materials of the same origin were analysed. Highest concentrations of plant nutrients were found in poultry excreta, followed by pig and cattle faeces. Calcium was the dominant element in the materials. Uric acid was the major nitrogen form in fresh poultry excreta (61%). Fresh cattle and pig faeces contained small amounts of ammonium N and traces of urea, but no nitrate. The main form of N in fresh and aerobic faeces was organic bound N. Low concentrations of nitrate (< 0.5% of total N) were indicative of aerobically treated materials, whereas high ammonium N concentrations (50-75% of total N) were typical for anaerobic materials. The C/N ratios increased during anaerobic decomposition in all materials.
Nyckelord
CARBON; C/N RATIO; NITROGEN; ORGANIC MATTER; PLANT NUTRIENTS
Publicerad i
Bioresource Technology
1992, volym: 40, nummer: 2, sidor: 137-142
Utgivare: ELSEVIER SCI LTD
SLU författare
Witter, Ernst
- Institutionen för markvetenskap, Sveriges lantbruksuniversitet
- Institutionen för markvetenskap, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Markvetenskap
Jordbruksvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1016/0960-8524(92)90199-8
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/44231