692 Journal of Agrindiure. [ic Nov., 1908,- 



seen excellent results obtained by field grafting wherever the spring was 

 sufficiently warm. In his opinion the field graft comes into bearing 

 sooner, and for the first few years bears heavier crops, but the bench 

 graft eventually overtakes it. In some Navarra vineyards the summer 

 bud graft or " Yema, " similar to that described in connexion with Jerez, 

 (see 4th Report) has given good results. Near Olite a large vineyard 

 was entirely grafted by this method, the unions obtained being very 

 perfect. 



Principal Resistant Stocks. 

 The popularity of the different stocks shows itself clearly in the planta- 

 tions of mother vines which exist in the province. At the close of 1904 

 these were as follows : — 



No. Botanical Origin. No. of Mother Mnes.- 



4.20 A V. Berlandieri X V. Ripaiia ... ... ... 120,861 



157-11 „ n ... ... ... 23.526 



34 E // n ... ... 9,225 



Rupestris dn Lot ... ... ... ... ... 37.928 



3309 V. Ripaiia X V. Rupestris ... ... ... 69,494 



3306 // ti ... ... ... 4,078 



101-14 // // ... ... ... 13,618 



1202 Mourvedi'e X V. Rupestris ... ... ... 62,234 



1203 n '/ ... ... ... 16,798 



A.R.G I Araiiion X Rupestri.s Ganzin ... ... ... 4^-9 3=' 



A.R.G 9 // " n ... ... ... 46,991 



41 B Chas.'elas X Berlandieri ... ... ... 36,7°+ 



84-3 Complex hybrid (Couderc) ... ... ... ... 22,000 



106-8 V. Riparia X Cordifolia Rupestris ... ... ... 19,277 



219 A V. Rupestris X V. Berlandieri ... ... ... 7,231 



301 A n •• ••• ■-. •• 6,276 



These were the official figures in 1904. There were smaller quantities' 

 of a few other stocks, bringing the total number of mother vines up to 

 nearly 600,000, covering an area of 468 acres. 



The total number and acreage have not sensibly changed since thai 

 date, though some alterations have been made! by grafting, in order tc 

 make the quantities of each stock available agree better with the demand, 

 or in other words with their popularity. For example, 420A, though 

 an excellent and very popular stock, appears to have been planted some- 

 what in excess of requirements. Of the 120,000 originally planted, a 

 considerable number have recently been converted by graftmg to A.R.G. 9 

 and 1202, which are exceedingly popular in Northern Spain. It may be 

 here noted that Berlandieri hybrids are not always as popular at first a& 

 their remarkable qualities would lead one to anticipate, probably on 

 account of their slightly slower growth in their earlier years. 3309 has 

 also been reduced in numbers by grafting, the high lime contents of the 

 soil of Navarra rendering it unsuitable for the Riparia x Rupestris group 

 in the great majority of cases. Don Nicolas is inclined to prefer 3306 

 to 3309, especially in stiffer soils. In his opinion 101-14 is the least 

 valuable of the three. 



Very striking is the popularity of the Franco-American or Vinifera- 

 American group, especially 1202, A.R.G.i, A.R.G. 9 and 41B. The 

 sufficiency of their resistance to Phylloxera has already been dealt with at 

 length (see 4th Report, p. 353). Their power of supporting lime renders 

 them of special value in Navarra. 



The above figures are of interest as they give some idea of the number 

 of mother stocks required to supply resistant cuttings for the reconstitution 

 of a given area. It is highlv improbable that Victorian plantations will be 



