VARIOUS RESISTANT VINES 



which have given excellent results for years in Europe, and have 

 all been tested successfully in California. Among them are vari- 

 eties suitable for nearly all the vineyard soils of California, with 

 perhaps the exception of some of the heavier clays. 



The Rupestris St. George is remarkably vigorous and grows 

 very large, supporting the graft well even without stakes. It 

 roots easily and makes excellent unions with most vinifera vari- 

 eties. It is well suited to deep soils where its roots can penetrate. 

 Its defects are that it is very subject to root-rot, especially in moist 

 soils; it suckers badly and it suffers from drought in shallow soils. 

 Its great vigor produces coulure with some varieties and often 

 necessitates long pruning. 



In moist or wet soils 1616 or 3306 have given better results in 

 France and give indications of doing equally well here. In drier 

 soils 3309 will probably be found preferable. 



Aramon Rupestris No. 2 is suited to the same soils as Rupestris 

 St. George, and does particularly well in extremely gravelly soils. 

 It has some of the defects of the St. George and is moreover more 

 difficult to graft, and its only advantage in California is that it 

 is rather less susceptible to root-rot. 



There are no better resistant stocks than Riparia gloire and 

 Riparia grande glabre, wherever they are put in soils that suit 

 them. They do well, however, only in deep, rich, alluvial soils 

 which are neither too wet nor too dry. Their grafts are the most 

 productive of all, and ripen their grapes from one to two weeks 

 earlier than the grafts on St. George. Their principal defect is 

 that they are very particular as to the soil, and they never grow 

 quite as large as the scion. The gloire is the most vigorous, and 

 the difference is less with this variety than with any other Riparia. 



The Mourvedre X Rupestris 1202 is extremely vigorous, roots 

 and grafts easily, and is well adapted to rich, sandy and moist 

 soils. In drier and poorer soils its resistance is perhaps not suffi- 

 cient. 



The most promising varieties for general use at present seem 

 to be the two hybrids of Riparia and Rupestris, 3306 and 3309. 

 They have great resistance to the phylloxera, root and graft almost 

 as easily as St. George, and are quite sufficiently vigorous to sup- 

 port any variety of vinifera. The former is more suited to the 

 moister soils and wherever there is danger of root-rot, and the 

 latter to the drier soils. In general, they are suited to a larger 

 variety of soils and conditions than perhaps any other varieties. 



Riparia gloire should be planted only on rich, deep alluvial soil 

 containing an abundance of plant food and humus, what would 

 be called good garden land, such as river bank soil not liable to 

 overflow. 



