54 8 



American Gooseberry Mildew. [dec, 



which infection may have spread), with a solution containing 

 i lb. of liver of sulphur to 32 gallons of water. The bushes 

 should subsequently be carefully pruned, and the prunings burnt. 



2. Diseased Bushes. — When bushes are known to be diseased, 

 either the entire bush, or, should the owner prefer to resort 

 to pruning, all the wood formed in the current and preceding 

 years must be destroyed at once. .Except in those cases in 

 which bushes may be easily pruned growers are strongly 

 recommended to destroy affected plants ; a brief delay at 

 first may greatly increase the work which the grower will sub- 

 sequently be called upon to do. The readiest means of 

 destruction will vary in different cases. 



(a) When the gooseberries form an unmixed plantation, 

 with no " top " fruit, the diseased bushes, if in groups, may 

 be set on fire with the aid of straw or other dry material, or 

 they might be sprayed with paraffin and fired, thus ensuring 

 total destruction. 



(b) Where the diseased bushes are under " top " fruit, or 

 occur scattered through the plantation, burning on the spot 

 cannot be practised. In such a case, therefore, the bushes 

 should either (1) be dug out (and subsequently burnt) after a 

 preliminary spraying with 1 lb. of liver of sulphur to 32 gallons 

 of water, to kill the fungus and prevent it spreading to surround- 

 ing bushes, or (2) the diseased bushes should be thoroughly 

 sprayed with a 10 per cent, solution of copper sulphate (1 lb. 

 to 1 gallon of water). This will destroy both fungus and 

 bushes, and in two or three days the bushes should be grubbed 

 up and burnt. 



If rain should fall soon after spraying, and the liver of 

 sulphur or copper sulphate is washed off, the bushes should 

 be sprayed again as soon as they are dry. 



It would not be safe to attempt to cut down or dig out affected 

 bushes during the summer and autumn, until after they have 

 been sprayed, as the spores might be shaken off and carried 

 by wind or on clothing to healthy plants. 



The site of any leaf -bearing bushes or parts of bushes which 

 have been destroyed should be sprayed with a solution con- 

 taining not less than 1 lb. of liver of sulphur in 24 gallons of 

 water in case any diseased leaves or fruit should have fallen 

 to the ground and escaped destruction. 



