620 [ DISEASES OF SMALL FRUITS. 



small brown spots on adult leaves are produced by 

 Phyllosticta ruborum, Saec. Both these fungi are found 

 on our native blackberry. ^>eptoria Rubi, Westd., 

 Pkra^midium Rubi-Idaei, Wtr., Coleroa Chaetonium, 

 Rbh., Percnospora Rubi, Rbh., Pyrenochieta Rubi-Idaei, 

 Cav., Cladosporiiim herbarum, Lk., Atteroma Rubi, 

 Fuck, and Ascochyia Pallor, Berk, are met with on the 

 raspberry all over the continent. Siphonophora Rubi, 

 Kalt. and Aphis urticaria, Kalt. are the two Aphids 

 which attack the raspberry. 



The diseases and pests affecting the Strawberry are 

 much more important from the point of view of the local 

 grower. The strawberry leaf-spot due to Sphaerella 

 Fragariae, Sacc. is common everywhere on all straw- 

 berries, but chiefly on the large fruited sorts. The 

 disease consists in round spots, which are at first dark 

 red, and then become dry and brown changing after- 

 wards to white or grey, with a reddish border. A similar 

 disease is caused by another fungus, Phylloslicta fraga- 

 ricola, Desm. As a preventive against the strawberry 

 leaf spot it is suggested to dust the plants rather heavily 

 with fresh lime or with flowers of sulphur containing 

 5 % of sulphate of copper, or to spray repeatedly with 

 Bordeaux mixture or with Burgundy mixture. In a bad 

 attack a severer line of treatment should be adopted. 

 When the fruit season is over pick off all the foliage and 

 burn it, and cover the strawberry beds with a litter of 

 straw about 5 c.m. deep, spray lightly with paraffin and 

 then fire the straw. The fire will cause little or no 

 injury to the crowns protected by their stipules. Soon 

 afterwards dig and manure the plants and water liberally 

 to encourage vegetation and secure a quick recovery. 



Other fungous diseases affecting the strawberry are : 

 Gleosporium Fragariae, Mtge. which produces dark red 

 blotches on the leaves, the central part being dark 

 brown ; Pkragmidium Rubi-Idaei, Wtr. which causes 



