Spraying Notes. 273 



VARIOUS POINTS. 



1. The San Jose scale can be controlled in a plantation by a 20 

 J3er cent kerosene and water mixture when the plant is thoroughly 

 sprayed. Early spring or late fall spraying is preferable, but the 

 material may be applied when the plant is in full leaf if the day is 

 sunshiny. 



2. Only on sunshiny days should sprays of kerosene and water 

 be used. 



3. Compared with fumigation on growing trees, spraying is 

 cheaper, simj)ler, and perhaps equally effective in the long run. 

 Nurserymen will find fumigation better adapted to their needs than 

 spraying. On growing plants, however, it is attended with difficulty 

 because of the necessity of providing tents. 



4. Paragrene, green arsenite, green arsenoid and arsenite of lime 

 are equal if not superior to Paris green in insecticidal value. The 

 reduced price of these substitutes will commend them. Arsenite of 

 lime can be made at home. 



5. Bordeaux mixture is liable to injure the foliage of the Japanese 

 plums, but no better fungicide for spraying this class of fruit is now 

 known. To avoid injury use a very dilute mixture. 



G. Varieties of fruit differ in their susceptibility to injury from 

 sprays. 



7. Unless lime is added, a simple solution of copper sulfate as 

 strong as four ounces per barrel cannot be used without injury to 

 the foliage of many fruit trees. 



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