LUTHER BURBANK 



After these reformatory measures have been 

 carried out, it remains to guard the trees against 

 the attacks of insects with some protective spray. 



The particular insect or fungus-destroying mix- 

 ture required will of course depend upon the indi- 

 vidual case. The Bordeaux mixture is doubtless 

 used more than any other single spray for fungus 

 diseases and for the codling moth in apples. A 

 lime-salt-sulphur solution is the general mixture 

 for San Jose scale. In general, it should be re- 

 called that spraying is a preventive measure rather 

 than a cure. Bordeaux mixture, for example, will 

 prevent the appearance of the fungus disease com- 

 monly called scab. The attacks of the codling 

 moth may be met in the same manner; but as there 

 is a second crop of these moths, another spraying 

 may be necessary later in the season. 

 BATTLING THE PESTS 



I should add that as to this matter of fighting 

 plant diseases and pests with the spray, as also in 

 the matter of the renovation of neglected orchards, 

 I must offer advice rather at second hand. My 

 own orchards, as a matter of course, have not been 

 neglected. While my orchards are cultivated 

 thoroughly, so that a weed is seldom seen, very 

 little fertilizer is used and rarely any spraying, as 

 my object is to obtain varieties that are immune 

 to fungus and insect diseases, and which will 



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