Relation of Weather to Crops 91 



crown gall disease, though to a less extent than almonds and peaches. 

 Some varieties, especially the American, are greatly injured by thrips 

 which damage the winter buds to such an extent that the trees leaf 

 out late and many of the branches die. Varieties especially suited 

 to the hot valleys are Red June, Doris, Mariana (for jelly), Burbankz 

 Chalco, Climax, and W'ickson. 



POMEGRANATES 



All varieties of pomegranates are especially suited to the hot 

 dry cHmate of the southern valleys. They are not injured either 

 by the cold of winter or the heat of summer. Although they require 

 irrigating water to enable them to bear profitable crops, well- 

 established plants will remain alive and make some growth for many 

 years with no other water than the natural rainfall. They are especi- 

 ally resistant to alkali and, all things taken into consideration, pome- 

 granates are one of the surest crops of the region. The pomegranate 

 is subject to but two serious troubles — a core rot and a splitting 

 of the fruit, neither of which is at present well understood. On 

 account of the fact that this fruit is but little known in northern 

 markets, the demand is at present small, only a few orchards being in 

 existence. Pomegranates are grown commonly throughout the 

 southern part of the State as hedges, and shrubs for garden and 

 lawn. Considerable fruit gathered from hedges is utilized by the 

 Mexican portion of the local population. While all the varieties 

 succeed admirably, the Wonderful excels all that have been so far 

 tested, in size, beauty, and quality. 



POMELOS (grape fruit) 



Districts which can produce oranges can produce pomelos. 

 There is no radical difference between the culture of these two trees. 

 The quarantine in Arizona and California on all citrus fruits from 

 the Gulf States should give an impetus to pomelo culture in Arizona, 

 since the quality of the Arizona fruit is superior to that of California. 

 In fact, the best fruit produced at Yuma is little, if any, lower in qual- 

 ity than the Florida product. 



The training and pruning of the pomelo consists in retaining 

 only the strong branches of young trees which have been "headed" 

 at approximately 3 feet when set out. Interfering and dead branches 

 are removed and the growth of watersprouts is discouraged. 



