MANURES AND PEETILIZERS. 69 



sod land is plowed after the green growth has 

 got well started. Those persons who have 

 grown a crop of corn on land in clover or 

 timbthy the previous season have noted the in- 

 creased yields from it, if the weather conditions 

 were satisfactory and the tillage good. 



The manurial value of feeding stuffs, as 

 indicated by the amount of nitrogen, phosphoric 

 acid and potash present, is shown in the follow- 

 ing table, abstracted from a more complete 

 table published by Dr. E. H. Jenkins, chemist 

 of the .Connecticut agricultural experiment 

 station.* The nitrogen is estimated at 17 cents, 

 the phosphoric acid 6 cents and the potash at 

 4^ cents per pound. The prices for these sub- 

 stances, however, varies from time to time 

 according to market supply and demand: 



AVERAGE NUMBER POUNDS NITROGEN, PHOSPHORIC ACID 



AND POTASH IN ONE TON AMERICAN FEEDING STUFFS, 



AND VALUE PER TON FOR MANURE OF SUCH FOODS. 



Phos- 

 J. ,j Nitro- phoric 



Green JOdaer. sen. aaa. Potash. value. 



Maize fodder 4 8 2.2 7.8 $1.28 



Maize silage 4.8 2.2 7.0 1.25 



Rye fodder 8.4 4.8 12.6 2.23 



Sorghum 4.0 1.1 3.7 .91 



Clover 13.0 2.6 13.0 2.93 



Cowpea vines 8.6 3.4 6.0 1.92 



Dry fodder. 



Clover 36.6 13.2 44.0 8.88 



Meadow hay 38.2 8.6 32.0 8.37 



Timothy.... 19.2 7.2 29.6 4.95 



Cornstalks 13.2 7.8 17 2 3.44 



* New England Homestead, Dec. 25, 1886, p. 457. 



