Treatment N-Sources* Glycerol (ml/l)
Inorganic N- sources (g/l) Organic N- sources (g/l)
(NH4)2SO4 NaNO3 NH4Cl Beef extract Peptone Yeast Extract
1 22.6 - - - - - 21.50
2 - 14.6 - - - - 21.50
3 - - 9.2 - - - 21.50
4 - - - 19.4 - - 12.82
5 - - - - 15 -  9.76
6 - - - - - 24.5   8.41
7 - - - 7.5 9.2 - 10.95
8 - - - 7.5 - 15 10.12
9 - - - - 5.8 15   8.95
Control - - - 5 5 10 10.00
*At C/N ratio of 3.51/1
Table 2: Treatments for determination of the best nitrogen source.