CULTURE. 



197 



PART III. 



CULTURE. 



(a) Conclusions (Choice of Varieties}. From what 

 precedes, it results that the first quality required from a 

 grafting-stock, or direct-producer, is a high resistance to 

 phylloxera ; and, in every case that a soil is equally suited 

 to all the American -vines, only the most resistant should be 

 planted. 



The following table summarizes what has already been 

 said from this point of view for most of them ; we will 

 indicate their resistance in the order in which we studied 

 them, and draw attention that the maximum resistance or 

 absolute indemnity is represented by the figure 20 : 



SCALE OF RESISTANCE TO PHYLLOXERA. 



Absolute 



V. Rotundifolia . . . . 19 



V. Labrusca (wild form) . . 5 



L Concord j 3 



_ Isabella F] ! . . . . 5 



F Ives seedling . . . . 4 



V. Californica . . . . 4 



V. Candicans (Mustang) . . 15 



V. Lincecwnii . . . . 14 



V. JEstivalis (wild form) . . 16 

 V. Berlandieri 



Berlandieri Millardet . . 17 



Berlandieri Planchon . . 17 



Berlandieri Vialla . . 17 



Berlandieri de Grasset . . 17 



Berlandieri Ecole . . 17 



V. Cprdifolia . . . . 18 



V. Cinerea (form studied) 15 



V. Rupestris 



Rupestris Mission . . 18 



Rupestris du Lot . . 16 



Rupestris Ganzin . . 18 



Rupestris Martin . . 18 

 Rupestris , with violet shoots 1 8 

 Rupestris, with metallic 



leaves . . -. . 18 



Rupestris Ecole . . 18 



Rupestris of Fortworth 18 

 Rupestrisof Kansas (Jaeger) 18 



Rupestris No. 62 . . 18 



Rupestris Arkansas . . 18 



mmunity, 20. 



Rupestris Cleburne . . 18 



Rupestris No. 66 . . 18 



Rupestris of Texas . . 18 



Rupestris No. 64 . . 18 



Rupestris No. 66 . . 18 



Rupestris # (Couderc) . . 18 



Rupestris Y " . . 18 



V. Monticola . . . . 17 



V. Arizonica . . . . 18 



V. Riparia 



Riparia Gloire de Montpel- 



lier 18 



Riparia Grand Glabre . . 18 



Riparia Scuppernong . . 18 



Riparia Baron Perrier 18 

 Riparia Tormenteux 



geant 18 



Riparia Ramond . . 18 



Riparia Martineau . . 18 



V. Rubra 18 



V. Coignetice :; . '\* .. 3 



V. Amurensis . . . . 2 



V. Thunbergi . . . . 1 



V. Vinifera 



Aramon . . . . 



Pineau . . . . 



Chasselas .... . .. 



Grenache . . . . 



Etraire de la Dhui . . 1 



Colombeau 1 



