SOILS FOR PLUMS 



227 



Peach borers also attack the cherry trees, particularly of the 

 sweet varieties. The remedies against borers have already been 

 discussed under insect enemies of the peach. 



San Jose" scale is less serious on the cherry than on peaches and 

 plums. The remedies, however, are the same. 



Brown Rot on Cherries. — Probably the worst disease of the cherry 

 is the brown rot. It seriously attacks the sweet varieties and is hard 

 to control. Spray with Bordeaux mixture as suggested for the 

 peach. 



PLUMS 



There are three main types of plums in common use. These are 

 almost as different from each other as plums are from cherries, 



UNITED STATES 



PLUMS AND PRUNES 



TREES OF BEARING 



AND NOT OF BEARING AGE 



APPROXIMATE ACREAGE 



EACH DOT REPRESENTS 300 ACRES 



Fig. 156. — About one-third of the acreage of plums and prunes is in California. (U. S. D. A.) 



and yet they grade into each other in many ways. Their culture, 

 soil and characteristics differ widely. Figure 156 shows the wide 

 distribution of plum trees in the United States. 



Soils for Plums. — The Japanese plums and the Domestica, or 

 European plums, prefer rich, heavy soils. Many of the American 

 types of plums endure well the light soils, while others of this 

 group prefer the rich, heavy soils. In trying to select a type to 

 suit the soil of any particular region it is well to consult the exper- 

 iment station authorities in your state. Some varieties will do 

 much better than others in any locality. 



