— i8i — 



no drought, and a comparative!}' even temperature, all of wliicli 

 have favored the normal growth of the foliage. As a consequence 

 the fungus has failed to obtain as strong a foot-hold as usual. 



Anything promoting health in the strawberry plant and normal 

 conditions about it is pretty sure to fortify it against its enemy. 

 Its likes and dislikes in regard to soil, mulching, drainage and 

 cultivation ought to be studied as carefully as a grower of choice 

 flowers studies these things. To forestall the unfavorable influ- 

 ences of weather, fungicides must be resorted to. 



REMEDIES. 



The efficiency of Sulphide of Potassium ("Liver of Sulphur") 

 has been questioned by growers with whom we have spoken ; 

 but Professor Scribner recommends a solution of it in the propor- 

 tions of one ounce to eight gallons of water. Apply this by spraying 

 once a week, from the beginning of the growing season till the 

 berries begin to ripen. He also suggests the use of the copper 

 solutions, and recommends, " three ounces of carbonate of copper 

 dissolved in one quart of water, which should be diluted to twenty 

 gallons." 



The copper solutions ha\'e the advantage of adhering strongly 

 to the foliage so that rain does not wa.sh them off readily. It 

 would be wise to apply such solutions after the crop is gathered, 

 at intervals of two weeks until September. 



The purpose of the above is to prevent the germination of coni- 

 dia and the infection of the new leaves. Should these leaves be- 

 come more or less infected in spite of the treatment suggested, and 

 should the plants otherwise appear in fair condition, lightly raking 

 up the dry mulch in the spring is advised,* and burning it, to- 

 gether with the leaves of the strawberr}'. The treatment seems 

 harsh, but if there is not too much of the mulch the plants will 

 send up afterward even a finer growth, and the source of infection 

 is almost wholly destroyed. 



SUMMARY, 



1. Sphaerella Fragariae, Saccardo, passes the winter in this 

 region in at least three different conditions ; i, as mycelium in the 

 leaves near the spots ; 2, in the so-called sclerotia ; 3, as ascospores 

 in perithecia. 



2. Reproduction is provided for through co7iidia and ascospores ; 

 the former ephemeral, the latter long-lived. 



* Trelease, 1. c, p. 55. 



