326 



BOARD OF AGRICULTURE. [Pub. Doc. 



Amount of Boots and Stubble and Valuable Ingredients left in 



One Acre. 



Kind op Plant and Portion analyzed. 



Roots 

 and Stubble 

 (Water- 

 free) . 



Nitrogen. 



Phos- 

 phoric 

 Acid. 

 P2O5. 



Potash. 

 K2O. 



Timothy and redtop, stubble and total roots to 



depth of 3 feet. 

 Buckwheat, stubble and roots to depth of 1 foot, 



Cow pea, stubble and roots to depth of 28 inches, 



Clover, stubble and total roots to depth of 3 feet, 



Vetch, stubble and roots to depth of 22 inches, 



Yellow lupine, stubble and roots to depth of 30 



Inches. 

 Blue lupine, stubble and roots to depth of 30 



inches. 

 White lupine, stubble and roots to depth of 30 



inches. 

 Horse bean, stubble and roots to depth of 22 



inches. 

 Soy bean, stubble and roots to depth of 22 inches, 



lbs. 

 8,223 



483 

 1,904 

 2,906 

 1,555 

 1,429 

 1,256 

 1,034 

 1,759 



701 



lbs. 

 90.1 



4.4 



25.9 



60.2 



27.2 



15.7 



10.7 



11.0 



31.8 



lbs. 

 25.2 



1.3 



7.5 

 15.1 

 7.2 

 4.9 

 2.9 

 1.9 

 6.1 

 2.2 



lbs. 

 55.8 



3.8 



20.6 



45.4 

 27.7 

 23.4 

 12.5 

 10.7 

 19.5 

 5.7 



It seems desirable to remark, in connection with this table, 

 that while the work was no doubt accurately done it appears 

 doubtful, in view of known facts and the results of others, 

 whether the results of these investigations do justice to the 

 plants of the clover family. Indeed, in his report the author 

 quotes results of other investigators, showing several times 

 more nitrogen in roots and stubble of clover than his own 

 investigation discovers. Thus, for example, Dr. Voelcker 

 of England is quoted as reporting 100 pounds of nitrogen per 

 acre in the roots only of clover, while Dr. Weiske of Ger- 

 many is quoted as reporting 180 pounds in roots and stubble. 

 Dr. Weiske is also quoted as reporting in the roots and 

 stubble of rye 62 pounds of nitrogen per acre, of barley 22 

 pounds, of oats 25 pounds, of buckwheat 45 pounds, of peas 

 53 pounds and of lupines 58 pounds. Though differing in 

 detail all these results demonstrate, in a striking manner, the 

 fact that the stubble and roots have a large manurial value. 

 It would seem, therefore, in the great majority of instances 

 that the feeding of the catch-crop, the careful saving and 

 application of the excreta of the animals consuming it, to- 

 gether with the manurial value of the stubble and roots, will 

 give us the largest possible returns. 



