396 



POLLIXATIOX AXD FRUIT SETTING 



The following apple varieties have been reported by several 

 investigators to be at least partly self-fruitful: 



Northwestern Greening 



With some the varieties in Group II a sufficient set has 

 been secured in some orchards where the blossoms have been 

 enclosed in bags to give a commercial crop of fruit. Field 

 observations of large plantings of certain of these varieties also 

 indicate that good crops will result from self-pollination if 

 other conditions are satisfactory. This seems to be especially 

 true of such varieties as Baldwin, Ben Davis, Grimes Golden, 

 Oldenburg, Wealthy, Rome, Yellow Transparent, Yellow New- 

 town, and York Imperial. However, even with these varieties, 

 better crops are generally secured where cross-pollination takes 

 place. This is especially noticeable in cold, cloudy seasons 

 unfavorable for pollination purposes. 



Since cold, cloudy, and damp weather often occurs in many 

 fruit sections, at least during part of the blossoming season, 

 and since the set of fruit is often light in such years, with re- 

 sultant high fruit prices, it is evident how important it may be 

 to have additional pollenizers in the orchard to assist in secur- 

 ing a larger set of fruit. 



As a rule, the pollen of one variety of apple will fertilize 

 the blossom of another variety, provided that the blossoming 

 periods of the two varieties overlap so as to make an abun- 



Group II 



Baldwin 



Ben Davis 



Cox Orange 



Early Harvest 



Esopus (Spitzenburg) 



Gano 



Gravenstein 

 Grimes 

 Jonathan 

 Maiden Blush 

 Milton 



Oldenburg (Duchess) 

 Red Astra chan 

 Red Oldenburg 

 Red Gravenstein 

 Red Rome 

 Rome Beauty 

 Wagener 

 Wealthy 



Yellow Newtown 

 Yellow Transparent 

 York Imperial 



