UPON PARASITIC FuNGI 



389 



new growth ; but not from any lack of the bhght Septoria lyco- 



pcrsici Speg. 



With the beans the report reads " The anthracnose Collctotri- 



chuui lagcnarnm (Pass.) was more than twice as abundant upon the 



irrigate than upon the check belt, but with the bacterial disease 



the amounts were reversed. 



ji 



In another field where beans had 



not been previously grown the irrigated land gave nearly double the 

 anthracnose found upon the check and here also the bacteriosis 

 was less than where the plants were not watered. 



With potatoes and beets the results were negative, that is, there 

 was no marked difference between the irrigated and non-irrigated 

 in the amount of scab or leaf blights. With celery there was con- 

 siderable gain in crop and an apparent decrease of the blight. 



Another line of experimentation upon the general subject of 

 weather versus fungus growth is by shading the plants partially as 

 if in imitation of an overcast sky. During 1897 several garden 

 crops were partially shaded by placing lath frames over the plants 

 and cutting off one-half of the direct sun. 



No striking results were obtained concerning the development 

 of fungi and as the experiments are still running no report will be 

 made for them here. , . . 



Rutgers College. 



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