GRAPE-PRUNING ON THE PACIFIC SLOPE 181 



The most important characteristic of the variety in making 

 a choice of a pruning system is whether it normally or usually 

 requires short, half-long, or long pruning. With this idea, the 

 principal grapes grown in California, together with all those 

 grown at the Experiment Station on which data exist, have 

 been divided into five groups in the following list : 



1. Varieties which require long pruning under all conditions. 

 - Clairette blanche, Corinth white and black, Seedless Sul- 

 tana, Sultanina white (Thompson's Seedless) and rose. 



2. Varieties which usually require long pruning. Bastardo, 

 Boal de Madeira, Chardonay, Chauche gris and noir, Colom- 

 bar, Crabbe's Black Burgundy, Durif, Gamais, Kleinberger, 

 Luglienga, Marsanne, Marzemino, Merlot, Meunier, Mus- 

 cadelle de Bordelais, Xebbiolo, Pagadebito, Peverella, Pinots, 

 Rieslings, Robin noir, Rulander, Sauvignon blanc, Semillon, 

 Serine, Petite Sirah, Slancamenca, Steinschiller, Tinta Cao, 

 Tinta Madeira, Trousseau, Verdelho, Petit Verdot, Walcheris- 

 ling. 



3. Varieties which usually require short pruning. Aleatico, 

 Aligote, Aspiran, Bakator, Bouschets, Blaue Elbe, Beba, Bon- 

 arda, Barbarossa, Catarattu, Charbono, Chasselas, Freisa, 

 Frontignan, Furmint, Grand noir, Grosseblaue, Green Hun- 

 garian, Malmsey, Mantuo, Monica, Mission, Moscatello fino, 

 Mourisco branco, Mourisco preto, Negro amaro, Palomino, 

 Pedro Zumbon, Perruno, Pizzutello di Roma, Black Prince, 

 West's White Prolific, Quagliano, Rodites, Rozaki, Tinta 

 Amarella, Vernaccia bianca, Vernaccia Sarda. 



4. Varieties which require short pruning under all conditions. 

 Aramon, Burger, Chardonay, Chauche gris and noir, Colom- 

 bar, Crabbe's Black Burgundy, Durif, Black Morocco, Mou- 

 rastel, Muscat of Alexander, Napoleon, Picpoule blanc and 

 noir, Flame Tokay, Ugni blanc, Verdal, Zinfandel. 



5. Varieties of table grapes which usually require half -long or 

 cordon pruning. Almeria (Ohanez), Bellino, Bermestia bianca 



