ExpERiMENTAiv Work in Dry-Farming 



587 



TABI,E LII. SUMMARY, VARIETY TEST OF POTATOES, PRESCOTT DRY-FARM 



1 — Destroyed by potato beetles. 



cwe usually very high, and satisfactory crops of potatoes are prob- 

 ably as profitable as any crop grown at present on northern Arizona 

 dry farms. 



In 1912 three varieties of potatoes were planted, including 

 White Star, Blue Victor, and Early Rose. See Tables LI and LII. 

 The largest yield was 6900 pounds per acre from the Blue Victor 

 plot. Seed for this plot was secured in Coconino County where it 

 had been grown for many years and was therefore well 

 acclimatized. 



In addition to the varieties tested in 1912, Irish Cobbler, Red 

 Ohio, and Wynekoop potatoes were grown in 1913. The largest 

 yield, 3020 pounds per acre, was from a plot of Wynekoop potatoes 

 which had received an irrigation by floodwater. The two remain- 

 ing Wynekoop plots yielded considerably more than the other 

 varieties. 



Several varieties were added to the test in 1914, including Rural 

 New Yorker, Carman No. 1, Moore's Early Snowball, Wrencher's 

 Surprise, Peachblow, Rose Seedling, Russet Burbank, Mammoth 

 White Pearl, and Bonanza. The largest yield was 1600 pounds pei 

 acre obtained from a plot of Red Ohio, Carman No. 1 returning the 

 second largest yield, 1280 pounds per acre. 



In 1915 several other varieties previously tested were discon- 

 tmued, and Vermont Gold Coin and Compton's Surprise were 



