300 FRUIT AND ITS CULTIVATION. 



and spray the foliage in summer with a solution of sul- 

 phide of potassium. 



Raspberries and Strawberries. 



Raspberry Rust (Phragmidum rubi-ideae). A fungus 

 which appears on the upper surface of the leaves in early 

 summer in the form of yellowish-brown spots in circular 

 patches. Leaves attacked fall off early, and thus affect 

 the future growth of the canes. Burn all diseased foliage, 

 and spray early in the season with a solution of sulphide 

 of potassium. 



Raspberry Spot (Glceosporium venetum). Attacks the 

 young canes and leaves. Appears first as small red spots, 

 then gradually develops into large blotches. The canes 

 the following season produce scanty foliage, and little, if 

 any, fruit. Cut off and burn all diseased canes, and spray 

 in winter with a sulphate of iron solution. 



Strawberry-leaf Spot (Sphaerella fragarise). Attacks 

 the leaves in the form of greyish or white spots, with a 

 reddish border. It seriously affects the growth of the 

 plant, and also the yield of fruit. Cut off and burn all 

 infected leaves ; in fact, in the case of a bad attack, it is 

 advisable to burn the plants, and to plant a new bed in 

 a fresh site. Spraying before the flowers open with a 

 sulphide of potassium solution is a good preventive. 



Strawberry Mildew (Sphaerotheca humuli). This dis- 

 ease causes the leaves to curl in the first instance, and 

 then appears as a white mould on the under surface. Also 

 infects the fruit. Spraying with sulphide of potassium 

 directly the disease appears will check its spread. Badly 

 attacked plants are best burnt. 



Finally, we commend to the notice of readers of this 

 volume' the Author's book, " Garden Foes " (25. lod. 

 post free), which contains the life history of, remedies for, 

 and illustrations of the various pests and diseases that 

 attack trees and other crops. 



