RELATION OF WEATHER TO CROPS AND VARIETIES 

 ADAPTED TO ARIZONA CONDITIONS 



Being a Revision of Bulletin No. 61, by Alfred J. McClatchie 



and J . Eliot Coit. 

 By the Staff of the Arizona Agricultural Experiment Station. 



INTRODUCTION 



In the following pages the aim is not only to record and discuss 

 observations made during the past 18 years upon the relation of 

 Arizona weather to crops, but to indicate as far as possible those 

 varieties which by popular experience and Station tests have proved 

 best adapted to the region. The large number of inquiries concern- 

 ing crops adapted to different sections of the State indicates the 

 need of keeping our printed information on this subject up to date. 

 As new settlers are constantly coming into the country, and as the 

 indications are that large numbers will continue to come in the 

 future, a publication giving such general information will undoubt- 

 edly be useful. 



This publication is a thorough revision of Bulletin 61, by 

 J. Eliot Coit, which, in turn, was a revision of Part III of Bulletin 

 4», by Alfred J. McClatchie. The arrangement and much of the 

 body of the publication are essentially the same, but considerable 

 new matter has been added, and information concerning the various 

 crops and their adaptability to different parts of the State has been 

 revised in accordance wnth new developments and the added experi- 

 ence of the past several years. This information has been secured 

 from records which have been accumulating at the Experiment 

 Station farms, and from personal visits and correspondence of the 

 different members of the Station Staff throughout the State. 



The total agricultural products that Arizona will yield is limited 

 principally by the quantity of water available. The area of arable 

 land is far in excess of the acreage for which water can be supplied 

 for irrigation. A large amount of this non-irrigable agricultural land 

 lies in districts having enough rainfall to make dry farming prac- 

 ticable. In the most favored of these regions the rainfall is insuf. 



