FIELD CBOPS. 



4:»7 



Potato culture, A. .1. McClatchie {Arizona Sta. Bui. 51, pj 

 directions for growing potatoes in Arizona are given. 



In the Salt River Valley the most favorable time for planting is tin- early pari of 

 February. At Yuma planting is done a little earlier, and in the Upper < rila a little 

 later. The tubers usually reach their full Bize early in June. Fall crops planted 

 late in A.ugus1 and early in September produce tubers during November, bul do nol 

 n-ach full maturity. Burpee proved to be the mosl desirable variety for planting at 

 the station, ami Early Rose and Triumph also gave good results. 



Sugar-beet culture, A. .1. McClatchie (Arizona Sta. Bul. 51, pp. fig. t).— 



Directions for growing sugar beets, based on experiments conducted by the 

 during the past 6 years and previously noted I E S. R 13, pp. 342, 641 



In the experience of the station the Beed may be planted either during the latter 

 part of September and the early part of October, or from the latter part of January 

 to the middle of March. Fall planting requires irrigation every LO days until Decern 

 ber, and usually 2 heavy applications of water in February, while winter-planted 

 beets are irrigated from April to June, the total quantity of water varying from L.5 

 t<> ."» acre-feet. Beets planted in the fall mature late in March and then readily pro- 

 duce seed stalks. The winter plantings are ready for harvesting in .Inly. After they 

 have reached their maximum size they begin to lose in sugar and purity and aoon 



decay. 



[n experiments conducted for 4 years in the Sail River Valley the yields ranged 

 from 5 to 18 tons of beets per acre, averaging 9.7 tons for fall planting and LI. 5 tons 

 for winter planting. The sugar content in fall and winter-planted crops avi 

 i:;.l and 14. s per cent, respectively. The cost of growing beets in this locality is 

 estimated at from $30 to $40 per acre. 



The influence of environment upon the composition of the sugar beet, 1 903 . 

 II. \V. Wiley I U. S. Dept. Agr., Bur. Chem. Bul. 95, pp. 39, charts 3).— The coopera- 

 tive work here reported was conducted as previously described E. 8. R., L5, p. 670 . 



The season's work at each station is discussed in detail, and data descriptive of the 

 soils, including the chemical analyses of both soil and subsoil, are given. The data 

 for the season are summarized in the following tables: 



Averag< results with Kleinwanzlebener sugar beets, 1903. 



Locality. 



Yield per 



ncre. 



Tons. 



Washington, D.C L4.6 



Lexington, Ky 6.3 



Madison, wis L9. 6 



tthaca, N. v is. t 



Lafayette, ind I 8.9 



Geneva, N. Y 15.6 



Aims. Iowa 16, 6 



Irrigation stations. 



Laramie, Wyo 



Port Collins, Colo 21.3 



Union, or.'L' i.v it 



Average 

 weighl 

 of beets. 



Ounces. 

 18.9 

 LI. 9 

 L4.9 

 6.0 

 l 1.9 

 11. 6 

 LS.2 



L6 

 20.8 



14.0 



Analytical data. 



Sugar in 

 the beet. 



Per cent. 

 8.7 



11.6 

 12.2 

 13.2 



14. J 

 16.5 



11.8 

 L5. I 

 16.8 



Coeffi- 

 cient of 



purity. 



71.6 



72. 

 79.0 

 75.0 

 81 . 6 

 89. I 

 Bl. 8 



- 



-- 



Meteorological <1hih: May \> 

 < October. 



sun 

 shine, 



62 



14462— No. 5—06- 



