8 SCLEROTINIA DISEASE OF THE GOOSEBERRY. [APRIL, 



are the prompt removal and burning of all dead bushes or 

 dead branches in the plantation. As soon as the leaves of 

 bushes show the appearance represented in Fig. 6, the bushes 

 in the plantation generally should be examined and any bush 

 found with the main stem diseased should be grubbed up 

 and burned. The prompt removal of all dead (or dying) 

 bushes, carried out for a few seasons, has proved more 

 efficacious against this disease than spraying. It must not 

 be forgotten that this fungus (unlike the American Goose- 

 berry Mildew) is capable of developing vigorously on dead 

 parts of the bush. In nearly every case — except in the com- 

 paratively rare ones where a plantation has been planted up 

 with Botrytis-infested young bushes — the disease appears 

 first either on single bushes scattered here and there through 

 the plantation, or on all the bushes over a small patch of 

 ground in the plantation, while the surrounding bushes are 

 healthy. If the disease on its first appearance is dealt with 

 summarily by the burning of all dead bushes and dead 

 branches, there is no need to spray or to take any other 

 remedial measures, since the disease soon completely 

 disappears. 



Where the disease has been allowed to become severe and 

 widespread, or where it is not in the power of the grower to 

 remove entirely the source of the disease, spraying must be 

 resorted to — in addition, of course, to the prompt burning of 

 all dead bushes. A heavy spraying with a solution of copper 

 sulphate (4 lb. dissolved in 100 gallons of water) should be 

 given just before the buds burst, with the object of destroying 

 the tufts of Botrytis shown in Figs. 1, 2, and 3, care being 

 taken to spray heavily the main stems of the bushes. The 

 infection and premature falling off of the leaves may be 

 prevented by spraying, directly the fruit is set, with Bordeaux 

 mixture made of the strength and in the manner described in 

 this Journal for June, 1908 (Vol. XV., p. 291.) In this 

 spraying it is essential that the under-surface of the leaves 

 should be sprayed as much as possible. No injury follows 

 the application of Bordeaux mixture of this strength, and if 

 the spraying be done at the time indicated no spotting of the 

 berries occurs. 



It may be noted, finally, that any treatment which induces 



