154 GARDEN FOES. 



when the spores escape and inoeidate the young leaves 

 and shoots, giving origin to the summer form of fruit. 



Kemedie?^. — In the matter of applying fungicides it is 

 all-important to remember that no one mixture, however 

 valuable, can be looked upon as a preventive or cure for 

 all known fungoid diseases. Flowers of sulphur is very 

 effective against vine mildew. Special bellow^s should be 

 used to secure a thin and even dusting of the substance on 

 the leaves, shoots, and flowers. The fiDst application 

 should be made when the leaves are just full grown, and 

 a second when in full bloom. A third application should 

 be made about a month later if the disease is not stamped 

 out. The most certain result is obtained with the tempera- 

 ture ranging from 80 deg. to 100 deg. Fahr. 



Excellent results also follow spraying with a solution of 

 potassium sulphide (Formula No. 23). This preparation 

 is cheap, and can be effectively applied with any form of 

 sprayer, and, being perfectly colourless, leaves no mark on 

 the plant. The times for application are the same as for 

 dowers of sulphur. 



Shoots that are attacked should be removed and 

 burned, as the winter fruit is not destroyed by the fungi- 

 cides mentioned. Fruit should also be promptly removed 

 when it shows indications of the disease, as it cannot pos- 

 sibly be of any value, and may serve to spread the disease 

 if allowed to remain on the vine. 



Finally, scrupulous care in collectmg and burning fallen 

 leaves and fruit that are diseased must be attended to, 

 otherwise a single shrivelled berry or fragment of a leaf 

 hiding in some crevice may be the means of introducing 

 the pest the following season. 



