130 



BULLETIN 1283, U. S. DEPARTMENT OF AGRICULTURE. 



Table 44. — Calculated minimum moisture in soils during 1917 and relative avail- 

 ability. 



Station No. 



Type. 



Depth. 



"Well" 

 moisture, 

 lowest 

 month 



(JfO. 



Ratio 

 ME, ME'. 



Calcu- 

 lated 

 moisture 

 of native 

 soil 

 (M). 



Xonavail- 



able 

 moisture 

 by test 



Ovc). 



Availa- 



bilitv 



m- we 



M 



M-l 



F-2 



F-12 



"Western yellow pine 



do 



do 



Fat. 



1 * 



1 3 



! * 



! i 

 j \ 



1 8 



Per crnf. 

 3.59 

 3.90 

 3.47 

 4.93 

 5.96 

 6.89 

 9.35 

 10.14 

 11.16 

 5.02 

 5.61 

 7.61 



0.S.53 

 .632 

 .647 

 .582 

 .636 

 .631 

 .630 

 .600 

 .495 

 . 526 

 .475 

 .375 



Pir cent. 

 3.06 

 2.46 

 2.25 

 2.87 

 3.79 

 4.35 

 5.S9 

 6.08 

 5.52 

 2.64 

 2.66 

 2.85 



Per cent. 

 2.36 

 1.53 

 1.68 

 1.16 

 2.63 

 2.67 

 1.99 



0.229 

 .378 

 .253 

 .596 

 .306 

 .386 

 .662 



F-4 



do 



1.97 

 1.79 

 1.28 

 1.43 



. 643 

 .322 

 .519 





do 



.498 





i I 



5.72 

 6.40 



7.28 









. 4.V' 



Average . . . 











.401 















.445 













F 7 



J i 



1 3 



l J 



l 1 

 \ I 



! i 

 { ! 

 ! i 



y.03 



10.02 



10.09 



7.38 



9.99 



10.80 



12.38 



12.42 



13.23 



10. 81 



11.77 



13. 13 



7.46 



9.67 



9.69 



16.20 



16.20 



20.60 



8.00 



7.50 



8.60 



. 463 

 .478 

 .486 

 .387 

 .325 

 .263 

 .481 

 . 536 

 .371 

 .483 

 .589 

 . 622 

 .393 

 .393 

 .435 



4.18 

 4.79 

 4.90 

 2.88 

 3. 25 

 2.84 

 5.95 

 6.66 

 4.91 

 5. 22 

 6.93 

 8.17 

 2.93 

 3.80 

 4.22 



1.26 

 1.85 

 1.24 

 1.76 

 1.64 

 1.18 

 1.79 

 2.06 



.699 



.614 



F-8 



do 



.747 

 .385 



.495 



F-14 



do 



.585 

 .700 



.691 





do 





F-15 



2.25 



.569 





do 







F-9 . 



1.62 

 .96 

 1.62 



5.76 



.447 

 .747 





..do 



.616 



W Al 











do 



...do 







6.63 

 5.04 













W-A2 















5.70 















I I 



10.18 

 11.08 

 12.31 









.560 



Average . . . 











.638 



Engeimann spruce 



do 







:::::::: 



. 649 













F-3 



i i 



\ 2 



1 3 



1 



\ 2 



3 



f 1 



1 3 



1 



1 3 



9. 40 

 11.16 



7. 57 

 10.03 

 11. 56 

 17.50 

 19.00 

 20. 60 

 18.90 



!:). 70 

 19.30 



. 645 

 . 535 

 .327 

 .408 

 . 462 

 .405 

 1.033 

 .876 

 .893 



4.31 

 5.03 

 3.65 

 3.09 

 4.63 

 4.68 

 18.08 

 16.64 

 18.40 



1.54 

 1.51 

 1.45 

 2. 12 

 2. 64 

 1.98 

 7.56 

 3.59 

 4.14 



.643 

 .700 



F-5.. 



.603 



.314 

 .430 



W-D . . 



do 



. 577 

 .784 





do 



.775 



W-F 













do 

























f 1 



\ 2 



1 3 



12.66 

 1 1. 53 

 15. 66 







.516 



Average . . . 









. 608 



Lodgcpole pine 





















F-ll 



( 1 



- 



3 



f 1 



1 3 



1 



J •> 



1 3 



6. 66 



7. 72 

 8.11 



8. 46 



9. 19 

 10. 87 



5.91 

 6. tt 

 7.15 



2.017 

 2. 07 

 1.743 



. 494 



. 185 



. 329 



. 520 



. 436 



. 526 



13.43 

 is. si 

 14.14 

 1.18 

 3. 65 

 8. 58 

 3.07 

 2.81 

 3. 76 



4.72 

 3. 66 

 2. 99 

 2. 44 

 2. 65 

 1.85 

 2.81 

 . 93 

 .76 



.649 

 .806 



F-6 





.7v* 

 .416 

 -J7i 



F-l 





.488 



.2 is 

 . 660 







.798 



