26 WILTING COEFFICIENT FOE DIFFERENT PLANTS. 



Table XI. — Wilting coefficient of various soils for different plants. 



Soil and species or variety of plant. 



Soil No. 1 (sand). Moisture equivalent!. 55. 



Wheat: Kubanka, G. 1. 1440. 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Mean 



Probable error of mean 



Probable error of single observation. 



Sorgo: Bed Amber, S. P. 1. 17543 



Coef- 

 ficient. 



Mean. 



1.00 

 .90 

 .80 

 .80 



.87 

 .78 

 .88 



± .02 

 ± .05 



.87 



.83 



Mean for all determinations, soil No. 1 . . . 

 Probable error of mean 



.86 

 ± .02 



Probable error of single observation 



± .05 



Soil No. 7 (coarse sand). Moisture equiva- 

 lent 1.55. 



Corn: Boone Countv White, C, I. 119... 

 Do 



1.05 

 1.02 



Do 



1.13 







Mean 



1.07 







Corn: Esperanza, M. 66 



1.11 



Do 



1.04 







Mean 



1.08 







Sorghum: White durra, S. P. I. 24997 . . . 

 Do 



1.05 

 .91 



Do 



.95 







Mean 



.97 







Sorghum: Dwarf milo, S. P. I. 24970 .... 

 Do 



.96 

 .92 







Mean 



.94 







Sorgo: Black Amber, Minn. 341 



.87 



"Do '. 



.80 



Do 



.79 







Mean 



.82 







Wheat: Kubanka, G. 1. 1440 



1.15 



Do 



.82 



Do 



.86 



Do 



.86 



Do 



1.00 



Do '... 



.90 



Da 



.80 



Do 



.80 



Do 



.87 



Do 



.78 



Do 



.88 







Mean 



.88 



Probable error of mean 



Probable error of single observation . 



± .03 



± -09 



Wheat: Bluestem, Minn. 169 . 



.89 



Do 



.98 









.94 







Soil and species or variety of plant. 



Soil No. 7 (coarse sand). Moisture equiva 

 lent 1. 55— Continued. 



Oats: Kherson, G. I. 459 



Do 



Do 



Mean 



Oats: Swedish Select 



Barley: Beldi, G. 1. 190 



Do 



Mean 



Barlev: Hannchen, G. I. 531 



Do 



Do 



Mean 



Rye: Giant Winter 



Do 



Do 



Mean 



Rice: Japan 



Do 



\ 



Squash: Yellow Summer Crookneck 



Do 



Mean 



Pea: Canada field, S. P. 1. 19389 



Do 



Do 



Do 



Mean 



Vetch: Vicia faba, S.P.I. 15428 : . . 



Tomato: Livingston's Golden Queen 



Do 



Mean -. 



Tomato: Stone 



Clover: Red 



Colocasia 



Do 



Do 



Mean 



Mean for all determinations, soil No. 7. . . 



Probable error of mean 



Probable error of single observation 



Soil No. 87 (sand). Moisture equivalent 

 2.48. 



Vetch: Vicia villosa 



Do 



Mean 



Vetch: Vicia faba, S. P. I. 15428 



Do 



Do '. 



Coef- 

 ficient. 



1 



24 



1 



10 



1 



17 



1 



49 



1 



47 



1 



06 



1 



34 



230 



