25 



Table 4. 

 soils. 



Populations of fungi that recolonized fumigated, nonamended 







Propagules X l0 2 /g of soil at days after fumigation* 



Fungi 



4 11 18 25 32 39 46 



Penicillium spp . 1.0 



Trichoderma spp. 



Aspergillus niger 



Gladosporium spp. 5.0 



Mucor spp. 



Fusarium roseum 



Pythium sp. 



Rhizopus sp. 



Gunninghamella sp. 



Geotrichum sp. 0.2 5.0 2.5 



G ephalo spor ium sp. 0.1 



G yl indr o carpo n sp. 0.1 



Fusarium solani 0.2 



Syncephalastrum sp . 0.11.0 



Total 6.4 67.6 2050.0 1776.6 510.2 1191,8 1795.0 



x 2 



Propagules X 10 per gram of air-dried soil detected in potato dextrose 



agar which contained 1 ml of Tergitol NPX and 50 mg of chlortetracycline 

 hydrochloride per liter of medium. 



45.0 



40.0 



46.6 



170.0 



170.0 



380.0 



5.0 



2000.0 



1720.0 



330.0 



1010.0 



1380.0 



0.1 



0.5 



0.8 



0.3 



0.3 



4.3 



12.5 



6.5 



8.5 



9.0 



10.0 



28.2 





0.2 



0.6 



0.8 



0.9 



0.3 





0.1 



0.1 



0.1 



0.2 



0.1 

 0.1 

 0.1 



0.7 

 0.3 

 0.1 

 0.1 



