TWENTY-I'IRST ANNUAL MEETING. 197 



es not sprayed at all. In 1911 the per cent of perfect fruit 

 for all of the sprayed peaches was 85, as compared with 

 63 for the unsprayed. 



Summary. To sum up the results of our experiments, 

 we make the following recommendations for summer 

 spraying of apples and peaches in this state. 



For Apples. 



1. As a rule, three summer treatments with a fungi- 

 cide are necessary to control the fungous diseases, and the 

 last two of these should contain an insecticide. These 

 sprayings should be made as follows: First, just before 

 the blossoms open, on the young unfolding leaves (April 

 27th to May 10th, according to season and variety) ; sec- 

 ond, just after all the blossoms have fallen (May 10th to 

 May 25th) ; third, about one month later (usually June 15th 

 to June 25th). 



2. Where fungi are not serious, especially scab, the 

 first treatment mentioned above may be omitted. Occa- 

 sionally, perhaps in alternate years, where fungi are quite 

 inconspicuous, and the trees have been thoroughly sprayed 

 the previous year, the fungicide may even be entirely omit- 

 ted, and only the two sprayings for insects given. 



3. For fungicides, we recommend Bordeaux mixture 

 of the 4-4-50 strength for the first spraying, and of the 

 1-4-50 strength for the second and third sprayings ; or com- 

 mercial lime and sulphur, used at a strength of 1^ gallons 

 to 50 gallons of water, for all three sprayings. The former 

 has better fungicidal value and the latter is less liable to 

 cause spray injury, especially russeting of the fruit. Where 

 fungi are bad, the former might be used, at least in alter- 

 nate years ; while with varieties russeting badly, such as 

 Baldwin, the latter is apt to prove on the whole more valu- 

 able. 



4. For the insecticide in the above we recommend ar- 

 senate of lead. If used in the paste form, at the rate of 3 



