140 PRACTICAL PLANT PROPAGATION 



blight and, in comparison with the French stocks, offers a budding 

 season that runs into September." 



As might be expected, there appear to be several strains of the 

 Calleryana Pear, and Mr. Galloway fears it will not easily be pos- 

 sible to obtain reliable seed from China, but efforts are being made 

 to produce the desired material here. 



The Chinese Water Pear (Pyrus usuriensis, cult, var.) is another 

 stock of great promise. It should be mentioned that the wild 

 Chinese Water Pear is less vigorous than the cultivated variety, 

 which in some respects is equal to the Calleryana Pear as a stock. 

 The Chinese Saw-Leaved Pear (P. serrulatd) and the Chinese 

 Birch-Leaved Pear (P. belulxfolid) are also of considerable promise. 



Several nurserymen supplied with samples of these new stocks 

 report excellent results, the average take being about 98 per cent; 

 all record the unusual length of time that the stocks held their 

 foliage compared with ordinary French and Japanese stocks. 



PLUMS 



Most growers prefer the Myrobalan Plum stock for general 

 purposes. The native Plums are also used for American varieties 

 and some nurserymen prefer the Peach for the Japanese sorts, 

 when they are to be grown on sandy soils. The St. Julien is a 

 variety propagated by the French nurserymen and frequently used 

 as a stock for P. domestica and P. insititia when it can be obtained 

 cheaply. 



The Myrobalan is obtained from France and is raised from seed. 

 Prof. Hedrick* mentions that its roots are apt to Winter-kill in the 

 colder regions and in the warm sections of this country the plants 

 sucker badly. 



St. Julien stocks give trees longer lived, hardier, deeper feeding, 

 less suckering and well adapted to changed soils. They are, how- 

 ever, difficult to bud and the young trees do not make the good 

 growth that is made on the Myrobalan. Besides this, the young 

 trees are rather susceptible to fungus attacks in the nursery rows. 



The Peach as a stock proves successful on sandy or gravelly soil. 

 The trees make a rapid growth, and bear when young. There is 

 little tendency toward sprouting at the roots. The budding is easy 

 and the nursery plants have a good appearance, besides being pro- 

 duced cheaply. Especially successful on the Peach are the Japanese 

 or Triflora Plums. Prof. Hedrick says that the Lombard, the 



*Hedrick, U. P. The Plums of New York. 



