BULLETIN 253, U. S. DEPARTMENT OF AGRICULTURE. 



Table VI. — Total, nonavailable, and available water in spring -wheat plats A and B on 

 different dates at the Akron Field Station. 



[Data in percentages of dry weight of soil.] 





1908 



IN 



1909 



1910 



1911 



1912 



1913 



1914 



Plat and depth. 



t~ 



<N 



t~ 



CO 



00 



"O 



o 



C3 



a> 



r- 





in 



IN 



IN 



<N 



o 



CM 





<! 



u 



ft 

 < 



3 

 < 





3 



ft 



D 



o 



u 



ft 



< 



< 



o 



O 



u 

 ft 

 < 





O 



O 



11.7 



7.0 



4.7 



19.1 

 7.0 

 12.1 



>> 



Plat A (spring plowed) : 



(Total 



1 foot < Nonavailable 



(.Available 



9.4 

 7.0 

 2.4 



25.8 

 7.0 

 18.8 



15.3 

 7.0 

 8.3 



20.7 

 7.0 

 13.7 



6.9 

 7.0 

 



10.8 

 7.0 

 3.8 



7.9 



7.0 



.9 



11.7 

 7.0 



4.7 



21.8 

 7.0 

 14.8 



14.3 

 7.0 



7.3 



14.8 

 7.0 



7.8 



19.2 

 7.0 

 12.2 



18.0 

 7.0 

 11.0 



8.8 

 7.0 

 1.8 



[Total 



2 feett Nonavailable 



(Available 



11.8 



11.5 



.3 



21.7 

 11.5 

 10.2 



15.2 

 11.5 

 3.7 



17.5 

 11.5 

 6.0 



11.5 

 11.5 

 



12.5 

 11.5 

 1.0 



11.3 

 11.5 

 



11.5 



11.5 

 



22.9 

 11.5 

 11.4 



13.9 

 11.5 

 2.4 



12.6 

 11.5 

 1.1 



13.8 

 11.5 

 2.3 



14.1 

 11.5 

 2.6 



12.3 

 11.5 



.8 



17.6 

 11.5 

 6.1 



11.2 



11.5 

 



[Total 



3 feet-! Nonavailable 



(.Available 



9.6 



9.3 



.3 



12.7 

 9.3 

 3.4 



11.4 



9.3 



.1 



12.5 

 9.3 



1.2 



10.2 



9.3 



.9 



10.4 

 9.3 

 1.1 



9.0 

 9.3 

 



9.3 

 9.3 







19.3 

 9.3 

 10.3 



10.7 

 9.3 



1.4 



10.1 



9.3 



.8 



10.7 

 9.3 



1.4 



9.5 

 9.3 



2 



9.3 

 9.3 

 



10.0 

 9.3 



.7 



9.1 

 9.3 

 



(Total , 



4 feet< Nonavailable 



(Available 



"s.'o 



9.2 



8.0 

 1.2 



11.2 



8.0 

 3.2 



10.4 

 8.0 



2.4 



9.8 

 8.0 

 1.8 



9.4 

 8.0 

 1.4 



8.0 

 8.0 

 



7.9 

 8.0 

 



14.2 

 8.0 

 6.2 



10.4 

 8.0 

 2.4 



8.9 



8.0 



.9 



9.5 

 8.0 

 1.5 



8.9 



8.0 



.9 



8.0 

 8.0 

 



8.2 



8.0 



.2 



8.3 



8.0 



.3 



(Total 



5 feew Nonavailable 



(Available 



8.2 



8.6 



8.2 

 .4 



11.7 

 8.2 

 3.5 



9.7 

 8.2 

 1.5 



9.S 

 8.2 

 1.6 



10.6 

 8.2 

 2.4 



8.3 



8.2 



.1 



8.0 

 8.2 

 



15.6 

 8.2 



7.4 



9.5 

 8.2 

 1.3 



9.6 



8.2 

 1.4 



9.9 

 8.2 

 1.7 



10.0 

 8.2 

 1.8 



8.7 



8.2 



.5 



8.2 

 8.2 

 



8.5 



8.2 



.3 



(Total 



6 feet{ Nonavailable 



(Available 



Plat B (fallolowed): 



(Total 



1 foot< Nonavailable 



(Available 



7." 6 



9.6 

 7.0 

 2.6 



7.6 

 7.6 

 



25. 3 



7.0 

 18.3 



11.7 

 7.6 

 4.1 



14.5 

 7.0 

 7.5 



9.1 



7.6 

 1.5 



16.0 

 7.0 

 9.0 



9.6 

 7.6 

 2.0 



6.4 

 7.0 

 



7.3 

 7.6 

 



13.6 

 7.0 

 6.6 



8.5 



7.6 



.9 



9.9 

 7.0 

 2.9 



8.8 

 7.6 

 1.2 



14.4 

 7.0 



7.4 



12.3 



7.6 

 4.7 



19.4 

 7.0 

 12.4 



11.7 

 7.6 

 4.1 



10.8 

 7.0 

 3.8 



11.0 

 7.6 

 3.4 



17.6 

 7.0 

 10.6 



10.0 

 7.6 

 2.4 



15.9 

 7.0 

 8.9 



10.6 

 7.6 

 3.0 



12.8 

 7.0 

 5.8 



8.5 



7.6 



.9 



10.5 

 7.0 

 3.5 



8.1 



7.6 



.5 



17.6 

 7.0 

 10.6 



8.1 



7.6 



.5 



7.4 



7.0 



.4 



(Total 



. 2 feeK Nonavailable 



(Available 



10.8 

 11.5 

 



22 4 

 1L5 

 10.9 



13.2 

 11.5 

 1.7 



15.5 

 11.5 

 4.0 



11.9 

 11.5 



,4 



18.2 

 11.5 



6.7 



11.5 

 11.5 

 



11.5 

 11.5 

 



20.5 

 11.5 

 9.0 



10.5 

 11.5 

 



15.0 

 11.5 

 3.5 



11.3 

 11.5 

 



11.6 



11.5 



.1 



10.1 

 11.5 

 



13.7 

 11.5 

 2.2 



9.3 



11.5 

 



(Total 



3 fee t< Nonavailable 



(Available 



8.6 

 9.3 

 



14.9 

 9.3 

 5.6 



10.1 

 9.3 



.8 



11.8 

 9.3 

 2.6 



9.8 

 9.3 



.5 



14.8 

 9.3 

 5.5 



9.6 

 9.3 



.3 



9.2 

 9.3 

 



14.2 

 9.3 

 4.9 



8.1 

 9.3 

 



9.7 



9.3 



.4 



8.1 

 9.3 

 



8.6 

 9.3 

 



7.2 

 9.3 

 



9.5 

 9.3 



_ 9 



8.0 

 9.3 

 



(Total 



4 ieetl Nonavailable 



(Available 



"8."2 



11.1 



8.2 

 2.9 



9.7 

 8.2 

 1.5 



9.8 

 8.2 

 1.6 



9.3 



8.2 

 1.1 



10.9 

 8.2 

 2.7 



9.8 

 8.2 

 1.6 



8.2 

 8.2 

 



9.4 

 8.2 

 1.2 



8.7 



8.2 



.5 



8.6 

 8.2 



; 4 



7.4 

 8.2 

 



8.1 

 S.2 

 



6.5 

 8.2 

 



7.6 

 8.2 

 



7.0 

 8.2 

 



(Total 



5 feet-j Nonavailable 



(Available 



~8."l 



10.0 

 8.1 

 1.9 



8.1 

 8.1 

 



9.1 

 8.1 

 1.0 



8.7 



8.1 



.6 



9.5 

 8.1 

 1.4 



10.4 

 8.1 

 2.3 



8.9 



8.1 

 .8 



8.4 



8.1 



.3 



9.7 

 8.1 

 1.6 



9.1 

 8.1 

 1.0 



7.5 

 8.1 

 



8.2 



8.1 



.1 



6.6 



8.1 

 



8.1 

 



6.4 

 8.1 

 



(Total 



6 feet< Nonavailable 



[Available 



"i. 6 



S.7 

 7.0 

 



7.0 



7.0 

 



8.6 

 7.0 

 1.6 



7.2 

 7.0 



9 



8.0 

 7.0 

 1.0 



10.0 

 7.0 

 3.0 



8.1 

 7.0 

 1.1 



7.8 

 7.6 



.8 



7.7 

 7.0 



.7 



8.3 

 7.0 

 1.3 



7.0 

 7.0 

 



7.0 



7.0 

 



6.7 

 7.0 

 



6.5 

 7.0 

 



6.2 

 7.0 







The water available for the use of the plant is computed by sub- 

 tracting the nonavailable water from the total water content. It is 

 the available water in which the farmer is interested. This, together 

 with the rainfall during the growing season, represents the total water 

 supply for the production of crops. In order to show more clearly 

 the available water, figure 1 has been prepared. In it are presented 

 graphically the relative amounts of available water in each foot-sec- 

 tion, as shown in Table VI. At the left of the figure is shown the 

 depth represented in foot-sections from 1 to 6 feet. The dates the 

 determinations were made are shown at the top of each column. 

 Each division of the black column represents the percentage of water 

 in that foot-section availab\e for the use of the plants on that date. 



