CEREAL INVESTIGATIONS AT THE NEPHI SUBSTATION. i 
- 
July are by far the driest months. Most of the precipitation from 
November to March comes in the form of snow. The average 
monthly distribution of the annual precipitation at Nephi, 1898 to 
1912, inclusive, is shown graphically in figure 6. 
Since 1908 an accurate record of the daily rainfall at the Nephi 
substation has been kept. A summary of these data is presented in 
Table II, which shows the number of days in each month from 1908 
to 1912 on which rain fell, the number on which the precipitation 
exceeded 0.5 inch, and the maximum and minimum rainfall on any 
one day. 
TasiE II.—Precipitation at the Nephi substation, 1908 to 1912, showing the number of 
days in each month on which rain fell; the number of days on which the precipitation 
exceeded 0.5 inch, and the maximum and minimum rainfall on any one day. 
1908 1909 1910 1911 1912 
Rainy | Inches | Rainy | Inches | Rainy | Inches |} Rainy | Inches | Rainy | Inches 
days. |ofrain. | days. | ofrain.| days. |ofrain. | days. | ofrain.| days. |of rain. 
Month, etc. ; 3 | eer ; i 
q fs ie A | 
q G ; = : axe = 7 ie = Q als s ¢ ae 
a || 8 mE] S Bias | 8 | 8 2/3 |& 
eases orate loses kee |e ee S| Be |S |e 
fax} — G onl —_ fax] k wal fa} Hw = ax} L = 
Secale Sa Coes leila Coes |e | OR ie te eR ig 
BP /O;e (ale /O,;al/ala}o .4 al/ael/o;a/a]/a lo j= | 
January.....--- 4, 0,0.37)0.03} 6) 1)/1.30)0.13) 6) 0/0.20,0.01; 4) 1/1.38/0.10] 4 00 13|0. 07 
February ....-- 5| 0] . 42) .10)~ 5). 2) .69] .06]. 4). O| .31) .04) 5) 0} .28) .05) 3] 0} .10} .09 
Marche so = 55 Alia b=t76\e503|) SO Ol sAZ NOS ee Ae We GIEN05| 22/2 2/53! .02l5 0 Sl dl. (ole.05 
Jj OES eer De Ole2 | 2042.6). 212 78) 512) e480) 40) 4; Oj .28) .05) 10) © 1) .58) .03 
Miya a Oeste 026 5! 20) 246). OL 5) Ol. 27. 2) el ela lien: |Uaeae|l aeeelllc oD Oz 
JUNC es A Oe Olea 2 OU ele Oe EO0l sll 20, 031.00|- = 8)2 0} .43)- i: 5] 0/Sed a a 
Ul eaanaeeaeaee Glee 22 (02 eel sO! soil 3 05| elt! O15) 0: 8 eeell65 |e 8] 0) .36) .01 
PANTO UIS tage ee Sleeaei2aOll LO VSIe PS e72) i. Sie O05 eae: Sle or O\e28| ae An Ol tale: 
September. ..-- 6} =-2)1. 41) . 02 8 0} .15) .02 9 Ty CONG) SA 7 Ie ety pale 4 0) .44) T. 
October=s-22 =: heme ee OEeoopere air sre Ole 20 Si Sle Mie S wa SO 46220712. il oles 
November... .- | 1) 1) . 46) .00) 5} = 1) . 90) 10) 93) —~— OO} £43) .07; = 2) =O}: . 3]. 18) 5 1 51] .02 
December. -.--- 3 1} . 53) .04; 6 1 - 50) - 05 3) 1} .65) .04, 5 0} . 23) .10 3 0, .14| .05 
For the year: | | 
on Otalenees yA ie 2 | eee lie [be 9 wall eae SIA ed eee (bd bl oe Ad) Stiiaveelloaae 
Maximum. Gera) 220 eee Fons ee oll 30) 22 2a) 14 Ly S83le22 fell ZAN satel lee 12 3 Ls 
Minimum 1} Oj..-.-|0 Dea OEE 00) ot o ete - 00) |e O| Eee ae ae. OE Ts 
1 | 
1 T=trace. 
Table II shows that most of the rains fallmg at the Nephi sub- 
station are small and in many cases negligible. This fact is not so 
serious during the early or late months of the year when evaporation 
is slight, but from March to August any rain of less than 0.5 inch is 
practically useless in so far as direct benefit to the crop is concerned. 
It is not sufficient to more than saturate the dry surface of the soil 
and thus does not allow the addition by percolation of any moisture 
to that below. Because it remains in the surface few inches it is 
almost entirely lost by evaporation before the crop can make any 
use of it. Table II shows further that in June of the past five years 
there has been not one rain of as much as 0.5 inch. July has had one. 
This lack of rainfall in June and July often has a serious effect on 
the cereal crops, which at that time are passing from the boot to full 
