Envir:19 



400 ■ 



300 



200 



100 



from soil or,i;^anic matter 



from plant residue 



Oxygen % in air stream 



21 



1600 



uoo 



1200 



1000 



800 . 



600 



400 ■ 



Influence of Oxygen in Air Stream on CO Production 

 in Decomoosition of Crop Residues (residue added at 

 rate of 0.5^ by ivt.) 





 Figure 



10 



15 



20 



Influences of Oxygen % in Air Stream on CO^ 

 Production in Decomposition of Crop Residues 

 (residue added at rate of 2,0^ by vrt.) 



