GEOWIlSrG SUGAR BEETS IN" UTAH AND IDAHO. 



Table II. — Average rainfall by^months for 2 districts in Utah and 1 in Idaho fi 



1870-1909, 

 Corinne, 



Utah 

 Boxelder 

 Count V. 



1892-1909, 



Provo, 



Utah, 



Utah 



County. 



1881-1908, 



Idaho Falls, 



Idaho, 



Bingham 



County. 



January . . . 

 February . . 



March 



April 



May 



June 



July 



August 



September . 

 October... 

 November . 

 December . 



Total 



Inches. 



1.37 



1.24 



1.42 



1.12 



1.44 



.59 



.45 



.59 



.67 



1.02 



1.05 



1.55 



Inches. 

 1.47 

 1.46 

 1.65 

 1.28 

 1.83 

 .66 

 .42 

 .75 

 .81 

 .91 

 1.08 

 1.39 



Inches. 



1.59 



1.32 



2.03 



1.16 



1.62 



1.41 



.53 



.82 



.63 



1.02 



1.08 



1.30 



12.51 



13.71 



14.51 



o Reported by the Weather Bureau, United States Department of Agriculture. 



These records exliibit considerable uniformity in the distribution 

 of rainfall by months. The heaviest precipitation occurs in the 

 winter and spring. By combining the rainfall for the months 

 January to May, inclusive, it will be seen that fully 50 per cent of 

 the yearly precipitation occurs within this period. Under average 

 conditions the summer- rainfall is exceedingly hght. An increase in 

 the monthly rainfall may be noted in October, and this average 

 gradually rises untU the maximum is reached in March. In 1914 

 and 1915 the precipitation for the Provo district was considerably 

 above normal. Boxelder County had for both seasons shghtly 

 more than the average rainfall. At Idaho Falls the precipitation 

 was a Httle below normal for the year 1914 and more than 1 inch 

 above the normal for 1915. 



By comparmg the yearly averages for the three districts, given in 

 Table II it wiU be seen that Boxelder County has the least rainfall, 

 whereas the highest precipitation occurs in the Idaho Falls district. 

 The increases coincide with increases of elevation. While it is true 

 that the rainfall at certain periods is sufficient to moisten the soil 

 thoroughly, and at such times may provide enough water to be of 

 value in crop production, there are many occasions when the pre- 

 cipitation is so distributed that crops are not benefited appreciably. 

 The snow which falls upon the moimtains during the winter months 

 affords a supply of water which is made available during the summer 

 months and is utilized for irrigation purposes in the adjacent valleys. 

 For most farms the artificial application of water is essential for 

 successful sugar-beet production. 



The growing season extends from the latter part of April to the 

 first or second week in October. The latest dates for spring frosts 

 throughout this period varied from April 19 to May 28. In the 

 autumn there was a variation from September 15 to October IS in 



